11/21/2023 0 Comments .223 subsonic handloads![]() Yeah, you just answered your own question. The 300 Whisper works like this, but then again that uses more powder. I have thousands of those ready to go.Īlso, I think that a wide gas port opening in combination with a pistol length gas system and a light weight buffer/spring could allow for cycling. I'll take the advice given here from other folks and use lighter, shorter bullets. ![]() It will not have sufficient gas pressure to operate the BCG, so you'll be shooting straight pull bolt action style.ĮTA: I guess if I'd read the thread I wouldn't duplicate other's effort Since we're talking about a fast burning pistol powder here, velocity in a shorter barrel likely won't be much less. Using 4.5gr of Solo 1250, the bullet gets 1052 fps from a 24 inch barrel. Is there a load to make H335 send 75grs subsonic? Also, will 75gr bullets stabilize enough at that low of a velocity to prevent baffle strikes? I'll be shooting out of an 18" 1x7" twist WOA SPR barrel.ĭisclaimer: I know that any load data provided is "use at your own risk" and I know to start loading 10% less than the provided load and work my way up.Īccurate Arms lists a subsonic load with Hornady 75gr BTHP. I've read that subsonic rifle loads usually use pistol powder, and usually only around 5gr of it.ĭoes anyone know the best powder and charge for 75gr subsonics? I've got a bunch of H335 that I use for 55gr full power rounds. I'll be using bulk 75gr HPBT bullets from wideners and wolf SRM primers. 223 suppressors, which is what I'll be shooting my subs through. With 195- to 200-grain bullets, propellants in the 4350 category start to be useful.I've searched the archives, but every thread about sub. Its magnum-spec jacket should give deep penetration. I suspect that within 200 yards, it should expand from an 8mm Mauser rifle without issue. Speer’s 200-grain 0.323-inch Spitzer Hot-Cor was designed expressly for the 8mm Remington Magnum. 308 Winchester do fine in the 8mm Mauser. In general, mid-rate propellants that work well in the. Hodgdon’s online reloading data shows excellent velocity with 150- and 170-grain bullets from CFE 223 propellant. Too many imported war-surplus Mausers had their bolts removed for shipping, and no one bothered to make certain the proper parts were reunited. If the number on the bolt does not match the number on the receiver, don’t shoot the rifle without a headspace test. Have a real expert check the overall condition, including the manufacturer code and date on military models I am leery of some of the lower-quality arsenals with late World War II dates. I know a fair bit about Mausers but do not consider myself an expert. Nothing less than a Model 98 Mauser will do. As of last check, Hodgdon, Hornady, and Speer show handloads taken close to 50,000 CUP or 60,000 psi. Assuming the rifle is capable, the handloader can recreate European performance. This is crippling unless you are a handloader. 30-06, putting a 0.323-inch bullet in a 0.308-inch hole with significant gas escape. Such a meager pressure limit reflects a dimensional issue: an 8mm Mauser cartridge can be potentially chambered and fired in America’s most common centerfire rifle chamber, the. 30-30 fired from a much shorter barrel (20 inches). specs for the 8mm Mauser recommend a 170-grain bullet at 2,340 fps at only 35,000 psi MAP from a 24-inch barrel. 30-06, what happened to the 8mm Mauser in the U.S.? We could say, “The pressure got to it.” If military 8mm Mauser ammo and most modern European sporting ammo have near-parity with the vaunted. About 1905, an improved version saw the bore diameter increased to 7.89mm (0.3106 inch) and groove diameter to 8.2mm (0.3227 inch). Current European barrel specifications for the 1888 version show a bore diameter (land to land) of 7.8mm (0.3070 inch) and a groove diameter of 8.07mm (0.3177 inch). 45-70 ammunition.Īccording to Mauser historian Ludwig Olson, the German entry was officially the 7.9x57mm in military circles but was called the 8x57mm in sporting use. Army was still issuing single-shot M1884 Springfields and blackpowder. Reacting to the French 8x50R Lebel cartridge, the Germans developed Commission Model 88 repeating rifles using 8x57mm smokeless ammo when the U.S. All had long FMJ-RN bullets weighing from 215 to 227 grains and posted muzzle velocities in the ballpark of 2,000 to 2,200 fps, including the 8mm Mauser cartridge.ĭating to1888, it is among the oldest smokeless-powder service cartridges and among the first with a rimless case. 30-caliber that appeared between 18 shared common attributes. In Europe and North America, then-new military cartridges of roughly. Sadly, as loaded in the United States, it is like a rejected calf: weak, underperforming, and failing to thrive. ![]() In many parts of the world, the 8mm Mauser prospers in the same performance niche where we place the. ![]()
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