Good versatile powder, use it in 223/5.56 ands 300 Blackout subsonic rounds. For a better experience, please enable JavaScript in your browser before proceeding. I think I got it for 45-70 but never used it. All these have offered complete penetration on broadside shots. I am new to reloading the .223 round. I highly recommend this powder and fully recommend this company. I've never used any of the H powders (4198,4831, etc) just to keep the number of variables down. All I have left for .223 is some IMR 4198 until my backordered 748 ships. IMR-4198 was only made for a short time in Australia starting in 2007 when the exchange rates strongly favored Australia over Canada. x*",`P;e4Ok m > endstream endobj 85 0 obj 124 endobj 55 0 obj << /Type /Page /Parent 50 0 R /Resources 56 0 R /Contents [ 63 0 R 65 0 R 67 0 R 69 0 R 71 0 R 73 0 R 75 0 R 78 0 R ] /MediaBox [ 0 0 387 603 ] /CropBox [ 0 0 387 603 ] /Rotate 0 >> endobj 56 0 obj << /ProcSet [ /PDF /Text /ImageB ] /Font << /F1 58 0 R /F2 59 0 R >> /XObject << /Im1 76 0 R >> /ExtGState << /GS1 81 0 R /GS2 83 0 R >> /ColorSpace << /Cs6 57 0 R /Cs8 61 0 R >> >> endobj 57 0 obj [ /ICCBased 80 0 R ] endobj 58 0 obj << /Type /Font /Subtype /Type1 /FirstChar 32 /LastChar 151 /Widths [ 278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 278 584 584 584 556 1015 667 667 722 722 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 611 278 278 278 469 556 333 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 500 334 260 334 584 350 0 350 0 0 0 0 0 0 0 0 0 0 0 350 0 350 350 0 222 333 333 350 0 1000 ] /Encoding /WinAnsiEncoding /BaseFont /OKLPHC+Helvetica /FontDescriptor 60 0 R >> endobj 59 0 obj << /Type /Font /Subtype /Type1 /Encoding /WinAnsiEncoding /BaseFont /Helvetica-Bold >> endobj 60 0 obj << /Type /FontDescriptor /Ascent 718 /CapHeight 718 /Descent -207 /Flags 32 /FontBBox [ -166 -225 1000 931 ] /FontName /OKLPHC+Helvetica /ItalicAngle 0 /StemV 88 /XHeight 523 /StemH 88 /CharSet (/one/eight/three/V/space/bullet/R/I/F/L/E/O/A/D/N/G/T/S/a/v/g/e/M/o/d/l/\ four/zero/two/quotedbl/x/six/W/i/n/c/h/s/t/r/period/nine/five/C/m/comma/\ H/f/b/u/quotedblleft/hyphen/quotedblright/w/parenleft/k/parenright/p/quo\ teright/y/exclam/seven/B/emdash/j/U/K/q/P/z/slash/Z/semicolon/X/asterisk\ /J/ampersand/Q/question/numbersign/colon) /FontFile3 79 0 R >> endobj 61 0 obj [ /Separation /PANTONE#20355#20C 57 0 R 82 0 R ] endobj 62 0 obj 1814 endobj 63 0 obj << /Filter /FlateDecode /Length 62 0 R >> stream sharps4590. I recently bought reloading equipment for my son-in-law and grandsons to reload the .45-70 for Ohio deer hunting. I need about 25 rounds per "match" with 1 or 2 matches per week for league shooting. I think this is an excellent powder and will continue to use it for my 45-70 reloading. 62gr: Code: Cartridge : .223 Rem. H4198 doesn't always produce enough gas to cycle ever rifle but IMR-4198 seems to. I've been having excellent results with some very old IMR 4198 and Nosler 40 grain Ballistic tip bullets in my 11.5" SBR. 0000002396 00000 n Compressed charges of slower-burn-rate propellants are more compatible with loading heavier bullets. Keep up the good work IMR. IMR 4198 is a fast-burning rifle powder great for cartridges like the 222 Rem, 221 Fireball, 45-70, and 450 Marlin. This combination has proven to be very good from a number of rifles, not only mine. Don, funny you would mention the 788. I weighed more than 10 different lot numbers of 5.56 cases from different manufacturers, as well as checking their water capacity. It has a perfect burning rate for the .222. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. These bullets can include lead tips, hollowpoints and plastic tips, with the most popular versions usually weighing between 35 and 55 grains. Hornady is now producing its ELD Match bullets in 52-, 73-, 75- and 80-grain weights. ONLY TWO DEFINING FORCES HAVE GIVEN UP THEIR LIVES FOR YOU. Even if it shoots good I probably won't buy anymore. This article is intended for handloaders who have experience reloading for their bolt-action rifles and now want to handload for an AR-style semiautomatic rifle. I like these loads for shooting hogs out to 200 yards, these are head shots. It meters very consistent in my Dillon powder thrower. Results for the 150 gr. Using this powder with .223 caliber has yielded great results. I like IMR 4198, have used it in .222 Rem. It works good in that straight walled cartridge. IMR 4198 is a GREAT powder for the 223.. bullet weights of 65 grains and under.. if it isn't accurate in your gun ( I'm a bolt action guy).. its not the powder.. its your gun or the shooter. 5?Z^svZi+4`yj!+o%gCR] 7%[P.]u$r4~%TitoUu}dxQ^_y9:sz^7;[K` o endstream endobj 64 0 obj 1540 endobj 65 0 obj << /Filter /FlateDecode /Length 64 0 R >> stream J. Scott Rupp takes a first look at the Springfield M1A Loaded rifle chambered in the popular 6.5 Creedmoor. CFE 223. I burn up 10 lbs of old Dupont IMR 4198 in an M16A1 carbine with a 14.5 inch barrel and a Ruger Mini14. . 0000010557 00000 n 243, although I agree it's a port pressure issue . I always grab what I can when I see it for sale. I worked up a load for a Barnes 55gr HP with 4198 this weekend. Still under powered when compared to Nato ammo. IMR 4198. Posts: 2203. The three-blade cutter is permanently and precisely mounted on a steel base to assure proper depth and angle of the resulting chamfer. Nickel size+/- 5 shot groups at 100yds. I have burned a lot of IMR 4198 in the 223 under a 50gr V-Max. The .223 is inexpensive, easy to use well, low recoiling, and often very accurate even with military ball-type ammunition. Knowing twist rate of your barrel would be helpful? When you purchase through links on our site, we may earn an affiliate commission, which supports our community. You wont be able to reprime without damaging the primer or maybe even setting one off if you get frustrated and try to force it into an obstructed pocket. This donation drive helps fund Cast Boolits for an entire year, and helps support our 2nd amendment rights! Introduced in 1965 with the .444 Marlin cartridge, the Model 444 was the most powerful lever action of its day. Most of my children started hunting deer and antelope with the .223 and have shot dozens of deer. shooting my 38-55 with lead bullets, 255 gr. I used it briefly in 223, as for 4227, it was very promising accuracy wise with 300 grainers, but i um, did something dumb with the last pound I had. CT Nosler RN generates around 3400 ft.lbs. With the changes made to military loads and the 5.56 NATO cartridge by 1980, the rifling twist of mil-spec AR rifles was changed to 1:7 to better accommodate ammunition that contained heavier bullets. Around 2007, when the exchange rates strongly favored Australia over Canada, Hodgdon started selling an Australian-made version of H4198 as IMR-4198. I say gave because he never paid me, LOL. Even if a fella only had, say a 30/30 barrel, being a single-shot, it's very easy to load it to make 50-yard head-shots on squirrels with a little lead and and a pinch of powder. Try this? My AR is a 16" Bushmaster M4 chambered in 5.56. The accompanying data is intended for .223 Remington chamber dimensions and includes bullet weights ranging from 35 to 75 grains. The maximum listed by IMR for a 55 gr bullet was 21.5 gr back then (2001) and what i used. Other powders I've had some success with accuracy are H4895, IMR-4895 and even IMR-4198. Reloading101. Bolt Action Shotguns; Lever Action Shotguns; Over Under Shotguns; Pump Action Shotguns; Semi Auto Shotguns; Side By Side Shotguns; Single Shot Shotguns; Other Shotguns; I tried AA 5744 and Hodgdon 322 under Hornady 300gr JHP and just couldn't get decent groupings consistently, despite hand weighing every charge. Its performance approached the .222 Remington Magnum (center) introduced in 1957. I tried 7 other powders. But I see H4198 and IMR4198 both mentioned here. 53 0 obj << /Linearized 1 /O 55 /H [ 1080 229 ] /L 77671 /E 25013 /N 10 /T 76493 >> endobj xref 53 33 0000000016 00000 n 1, (4) Ruger M77 MKII All-Weather, (5) Mossberg MVP and (5) Ruger Mini-14 Ranch Rifle. Is there any milsurp IMR8208 around anymore? These barrels offer good accuracy with 35- to 55-grain, lead-core bullets that include popular varmint and match designs. I use IMR 4198 with Sierra Matching 69 gr with very good results. vMax shoot great in my Savage 110. Additional experimental cartridges were designed to function in the AR-15 and meet military requirements, including the .222 Special (aka .224 Springfield) that had a shorter case, shorter neck and shorter overall cartridge length than the .222 Remington Magnum. 0000003178 00000 n I used IMR 4198 when I could no longer find VV N120 for 40 grain .223. With-out-doubt. It was in the Hornady manual and the power was available so I picked it up. Shooter's Reference Load Data for .223 Remington .223 Remington - Published Manufacturer Loading Data Shellholders: Hornady #16 Lee #4 Lyman #26 RCBS #10 Recipe Type: Rifle 55,000 PSI STANDARD SAAMI COMMERCIAL SPECIFICATIONS Pistol CUSTOM LONG THROAT Reduced Load Bullet Weight: ALL 30 gr 34 gr 35 gr 36 gr 40 gr 42 gr 43 gr 45 gr 50 gr 51 gr 52 gr I also ran the numbers on my Powley computer and was surprised when it indicated IMR 3031 and IMR 4064 were the preferred choices for lighter weight bullets. I had a 222 and it was.amazing in that cartridge. Thats not the case when firing an AR. 0000001760 00000 n The new Sako Finnlight II sports an innovative stock and Cerakote metal paired with the terrific 85 action. Extremely versatile powder . Mag, IMR-4198 was pretty much the go to powder for a couple decades. Couldn't hurt to try. Works if you only shoot that cartridge in the same bolt action rifle. Good luck and best wishes. Used to be when you asked about choosing a powder there was one answer. IMR 4198 isn't the best powder for 69 gr. Model : UPC : 754486053066. 0000012054 00000 n Not saying whether or not I tried the IMR in a AR? Thanks for the help guys. The kernels were shortened to improve metering and necessary elements were added to make it insensitive to hot or cold temperatures. External specifications of the two cartridges are identical and can be handloaded with the same dies; however, the 5.56 pressures are measured 1mm forward of the case mouth rather than on the case body. We continue to prioritize our shipments to our traditional sales channels to maximize powder availability at retailers. You will get great groups with the V-max but not like a 52 or 53 match bullet. It cycles perfectly with factory ammo, so I do not feel it is anything with the gun. Using N-133 and the same bullets, the best combination came at 25.6gr. 4198 is a fast burning powder, and you will get piston "short stroking" in an AR which will cause FTF issues. [ARCHIVED THREAD] - 223 loads with IMR 4198. Benelli Lupo Bolt-Action Rifle Line Expanded with New Chamberings, Strasser RS 14 Evolution Consul III Bolt-Action Rifle: Full Review, Kimber Hunter Pro Desolve Blak - A Lightweight Heavy Hitter, Browning BLR Lightweight '81 Stainless Takedown Lever Rifle, Mossberg Patriot Predator 6.5 PRC Rifle Review, Review: Springfield Armory M1A Loaded Rifle in 6.5 Creedmoor, RCBS ChargeMaster Lite Review: Not 'Lite' on Ability, Remington Model Seven SS HS Bolt-Action Rifle Review. Outstanding. what channel is bounce tv on xfinity. Have not got a chance to shoot this powder yet but I do have a bunch of charges weighed up and I must say while weighting it out the consistency of the powder looks great. I use this powder in my Grendel load development with great success. It shoots good groups and cycles fine with my AR but after I'm done I'll go back to TAC 2 Reply textbooknarco 2 yr. ago We believe the 2nd Amendment is best defended through grass-roots organization, education, and advocacy centered around individual gun owners. 0000012032 00000 n Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. We'll see. Thats not to say its just as easy to stuff a 77-grain bullet into the heaviest case youre reloading atop a full charge of BL-C(2) as it is with the lightest piece of brass in the batch. I generally prefer cutting the crimp away. Ive had good luck using the RCBS crimp remover tool mounted on the companys powered case-prep center. 2023 Outdoor Sportsman Group. There is some people that might give you info that is not any good! Edit Product. The load data chart shows that when shooting identical hand-loads in the bolt gun and the AR, the CZ 527 generally did better than the Sun Devil SD-15 with the lighter bullets, and the SD-15 typically grouped the heavier bullets better. Development of the .223 Remington began in 1957, and it became commercially available in January 1964, about a month prior to U.S. military adoption of its twin cartridge Cartridge, 5.56mm Ball, M193 for the AR-15/M16 rifle. Barrel Break-In: What It Is. I purchase an 8# jug of IMR H4198 powder for my .17 Hornet NOT my .308 sorry I must have gotten confused. However, in direct-impingement ARs, the gas port diameter and how far its located along the barrel are fixed. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. IMR 3031 Smokeless Powder Smokeless Powder IMR Powder Co. IMR 3031 1 Container Approximate net weight 1lb. Dime sized groups at 150 yds. I believe, I am what is keeping it from its full potential. I will try and remember to post the results here in case anyone else was wondering the same thing. I just finished shooting a batch of 53 BTHP using 19.5 grains..it was one of the softest shooting loads i've shot. "Professing themselves to be wise, they became fools" The Apostle Paul in Romans 1:22. Click the Sierra icons here Hodgdon MSDS on the new powder. In the years since, twist rates in AR rifles intended primarily for civilian sales have also been offered with 1:8 and 1:9 twist rates, with some specialty rifles featuring a 1:6.5 twist to stabilize match bullets weighing up to 90 grains. For the load data chart, I narrowed them down to varmint-hunting bullets and match bullets weighing from 52 to 77 grains, and I loaded them over W748, H335, BL-C(2), Varget, Benchmark, IMR 8208 XBR, CFE 223, and IMR 4166 propellants. IMR4198 is all Ive used in 223 and 222, since about 1982. . Savage 10 FCP-K 223 Rem Law Enforcement Bolt Action Rifle. Varmint shooters with small-bore cartridges love it. of IMR4198 and 52gr bullets. #1789892 - 01/10/11 11:59 PM Re: 55 v-max and varget in bolt action .223 [Re: SShooterZ] DoubleUp Die Hard Member with a . I loaded ammunition with a variety of bullets, including the Hornady 55- and 60-grain Spire Points (w/o cannelure), 55-grain GMX, Nosler 60-grain Partition, 55-grain Trophy Bonded and Barnes 50-, 53- and 55-grain Triple-Shock X-Bullet, with each producing excellent results. I went down to 46.6 and web expansion is at .0015, which indicates high pressure. You might be able to chamber that round in your bolt gun by forcing the bolt to close, but youll likely jam the action in an AR that the forward assist cant overcome. If just a pound , I'd give up on it and just get some H-335 and never look back . /x:^6"]eAfy(Pjch[nc2@:P%N!CvU}V5tFUs4ejng5bVCv[ Initially, sporting rifles chambered for the .223 Remington and mil-spec AR pattern rifles designed to fire the M193 Ball cartridge featured a 1:12 rifling twist. Bolt Action Rifles; Lever Action Rifles; Pump Action Rifles; Semi Auto Rifles; Single Shot Rifles; Other Rifles; Shotguns. sometime since then, Hodgdon has gone back to Canadian-produced IMR-4198. This fast-burning rifle powder gives outstanding performance in cartridges like the 222 Remington, 221 Fireball, 45-70, and 450 Marlin. Exactly what I was looking for for my 52 and 53 grain rounds. Right now I'm liking 24.5gr of RL15. I found it easy to measure and weigh and made for consistent rounds in Mt 38-55. 19.8 grains gave me better accuracy than the loads I had charged with W748 and the same projectiles. When we are sold out, we are sold out. I keep my muzzle velocity down around 1282 FPS. Then back to a (published here) max load of 4227 for 300 gr jacketed bullets. I use 4198 and find it to be a reasonable powder for my application of it in the 55 gr. Single-metal bullets. I have had better results with, well, everything else. Real world testing provided different results. For a better experience, please enable JavaScript in your browser before proceeding. I also built some specialty 223 Rem. Another one is IMR 4198 (21.6gr.) To show viewers how to succeed at long range, J. Guthrie gears up for a challenging shot while chasing Colorado pronghorn at long range with DPMS' Panther 6.5 Creedmoor. 0000002505 00000 n Stick powders that meter like ball. A friend gave me a little over 100 rounds of loaded .223. One of the three most accurate rifles I ever owned. Both are in the 24 - 25gr range. 0000010535 00000 n I used it to reload 223 in a ar-15 pistol with a 7.5 in barrel this product did exactly what I wanted it to do it was accurate and velocities were right where I wanted them to be 2200 FPS with a 55 gr bullet this may not be rifle velocity you want but it is good in short barrel ar pistols. riflesa CZ 527 bolt action and a Sun Devil SD-15 autoloaderto use for this report, and I built a lot of handloads to shoot in both guns. IMR 4198 POWDER For Reloading 223. This is simply not true. Neither the writer, The Firing Line, nor the staff of TFL, nor QuickLOAD's author nor its distributor assume any liability for any damage or injury resulting from use of this information or information derived from it. 2 of 7 failures to cycle the bolt back far . I chose two of my favorite 223 Rem. My experience shows, generally speaking, the faster-burn-rate choices work better with bullets weighing up to 60 grains. Using Hornady 40g V-Max and IMR4198. 0000007954 00000 n Im slowly running out of powder and Im not really sold on the CFE223 powder although I did have 3 pounds during this last round. Remember, I am talking about bolt rifles. Very accurate and consistent. In either AR action type, the buffer spring can be replaced to vary the spring rate over a limited range. I've always used both 4895 powders for my military bolt guns, but have heard it gives good results in the 223/5.56 caliber. Since you are already at max, I would back down to around 21.0 grains. I have come to the conclusion that if this doesn't shoot accurately in your rifle, nothing will. Its my go-to powder for cast 308 loads in several rifles. We place limited powder inventory for sale on a regular basis on our website. Going by the book today. IMR 4198 and H4198 are two of the go to powders, for years, in the 222 bench crowd. I have used 4198 for my 223 reloads as that was all that was available at the time. . That always seemed to work for me but I was nver able to get a 223 to shoot with an old Rem 788 in 222 Rm. All Rights Reserved. Imr. My Savage 223 model 110 . This Extreme series extruded propellant has gone through some changes since its inception while maintaining the identical burning speed of the past. IMR 4198 for .223 / 5.56 questions. Oh so that's the twist 1 in 8. Lot's of problems reported using light charges of 4198 especially with short stroking and not picking up the next round in the magazine. I started using IMR 4198 to I worked up a load too 21.5grs with 55gr bullets with a AOL of 2.250. Just a note that if you research using IMR or H4198 you will find it's the most problematic powder for reloading AR's. Current production IMR-4198 should be Canadian-made and can cycle most AR15's when loaded to maximum loads. I still scoop out my powder and dump it in the pan. . Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. I bought IMR 4198 powder because it was listed on Hodgdon's website as a Military duplicate load. Used to be very popular in .221 FB, .222, and .223. Seems that most don't like it because of the problems with their powder measures - not because of accuracy issues. Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: Handloading, Reloading, and Bullet Casting. My pacific Rifle powder measure'r doesn't seem to mind metering it. Back in the (other) bad old days of shortages I had also made up a run of 200 rounds of 55 grain FMJ and put them through a mini-14 without a hiccup. There is a big difference between a 20-24" bolt gun and a 16" carbine. Ive seen a lot of his targets that further confirm the fact that accuracy in bolt actions can be improved in this manner. This means you have the option to read your magazine on most popular phones and tablets. The load data says a min of 18.8 grains up to a maximum of 20.4. You must log in or register to reply here. handloads with lightweight 40-grain varmint bullets and HP38, Trail Boss, and CFE Pistol. 0000001288 00000 n Great for small and large-bore rifle shooters; Exceptional performance in cartridges like the .222 Remington, .221 Fireball, .45-70, .450 Marlin, and the 7.62 x 39 . First, almost all military and some commercial rounds have crimped-in primers. Traditionally, it propels a 55-grain bullet at 3,240 fps a notable increase in velocity and effective range when compared to the .222 Remington. .223 Remington (Hodgdon Data Using IMR Powder) reloading data with 221 loads. It's a very versatile powder with many applications. attentiveness vs attention imr 4198 for 223 bolt action. Any use of this content without express written consent is prohibited. I have loaded 18.5 grs with a 55 gr bullet , still cycled the M16 action. I ended up giving 7.5 pounds to a friend. I scale my charges most of the time. As I only reload what I shoot. Never used it, don't know much about it. 0000006710 00000 n However, my handloading mentor, John Redmon, who actually got me started in handloading the 223 Rem. Sierra Pro-Hunter 150 gr. Does not meter well from my XL650, but I check every charge by hand anyway. In my Savage 10FP 1-10" twist my go to load is the 52 gr SMK with 19.8 gr of 4198 . Beth Shimanski of Savage introduces their all new straight-pull rifle. This M1 Ball ammunition was designed for long-range machine-gun barrages, then a common military tactic, but by the time the Garand rifle appeared, the .50 BMG had taken over the long-range role, and .30-06 machine guns were primarily used at closer range. The decapping pin in the sizing die may not be stout enough to knock these out without being damaged, so deprime them before resizing using a special die expressly made for this task. I taught my wife to reload years ago seemed to help with the misunderstanding part. of IMR4198 and 52gr bullets. But maybe there other members who disagree. of muzzle energy and really puts the Hornady Leverevoltion to shame. Wilson Combat Paul Howe Tactical 6.5 Creedmoor: Full Review of the Versatility Champ, Sweet Scents of Gun Solvents and Oils: 12 Perfumes for Firearms, 10 Great .22 Mag Bolt-Action Rifles Right Now, Ruger No. There is no single max load, since every action, barrel, case, primer, bullet, and lot of powder is different. All RifleShooter subscribers now have digital access to their magazine content. Some report that it takes maximum charges to make their AR's extract and pick up the next round from the magazine. I load 223 in my ar with either cfe 223 for the fmj loads and blc(2) for my varmint and sp loads. He said it was loaded for his T/C pistol and he sold the pistol and forgot to give the guy the ammo. I would certainly recommend it to others for its consistency. More about them later. ONE IS JESUS CHRIST, FOR YOUR SOUL, AND THE OTHER IS THE AMERICAN SOLDIER, FOR YOUR FREEDOM. Using the powder for low pressure cast large caliber bullet rifle loads. seirras Proven metering and necessary elements were added to make it extremely insensitive to hot/cold temperatures. IMR or H4198 powder is one of the "fastest" recommended powders for 55 grain bullets in an AR semi-automatic. 0000021151 00000 n Shoots outstanding ! Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Let me ask you this. If looking to acquire an automated powder-charge dispensing unit to speed up precision reloading, don't judge the RCBS ChargeMaster Lite powder scale and dispenser by its name; the Little Green machine packs a heavy-weight punch with speed and accuracy. Using bullets from Nosler BT LF, Barnes VG FB, Nosler BT, SinterFire, Sierra SP, Speer SP, Sierra HP, Barnes TSX FB, Hornady FMJ, Hornady V-Max, Swift Scirocco, Sierra HPBT, JLK VLD, Sierra MK, Berger BT Targ. Then I trickle the rest in with a battery operated Hornady Vibarator Trickler. load. respective bolt-action designs in the 223 Remington. For a roll crimp to offer uniform results, cases must be trimmed to a uniform length. I was not able to find any this week. Like a lot of others have posted, I used 21.5 with a 55gr FMJ. I have been looking for alternative powders, but soon everything could be gone. I was down to the bottom of the can of my old supply and was very happy to be able to get a new supply from you. I don't have a lot to add, was hoping others might chime in first. Had pierced primers at 48 grs of CFE223 under a 168 SMK in an LR 308. 78gn of IMR 4198 has shot about .75-1 MOA (5-shots groups) in my Hankins barreled action with the 275BE and 275MH. Ive used 4198 for a few different loads with .223. But as you probably require many rounds being made for your up coming event. Redmon adjusts COL so his test rounds will just fit the chamber and then incrementally reseats each five-round batch 0.010 deeper (up to 0.2 inch), searching for that special sweet spot. When shooting his handloads, he single loads each round in a rifle, so COL isnt limited by the rifles magazine length. I use IMR-4198 for my .30BR and 7.62x39 accuracy loads, and will be trying it out using pulled bullets from x39 ammo in x54R reduced recoil loads for my 110lb Granddaughter's scoped M-N 91/30. It is also outstanding in cartridges like the 444 Marlin and 7.62 X 39. To cut to the chase. A very fun round to shot and easy for my daughter to handle. Depending on the pressure curve generated when firing a round, an AR may or may not function satisfactorily. But than again not knowing what you use for a powder measure'r ? If youre not shooting a single-shot rifle, the length of the magazine box may dicatate the maximum COL possible.