58 caliber straight-walled case, and rolling that in to form a neck for a. The process starts by forming a shoulder on a. The most effort that I can recall while case forming something useful (not just a ridiculous experiment), was. Most case forming processes take no more effort than sizing large cartridges (8x57, '06, etc.) that were fired in an over-sized chamber. 50 BMG, I don't think there's any reason to worry about the Lee Challenger, if that's what you want. Short of swaging case heads, or working with something like. Lyman molds #311290 and #311284 respectively(Montana Bullet Co makes the 213 at least)ДЄccuracy Load: 30.0 grains IMR4227 1992 fps. Midway sells 'em.)ДЄccuracy Load: 49.0 grains IMR4350 2375 fps.ДЇactory Duplication Load: 40.0 IMR4895 2197 fps. 312'.(Barrels need slugging.)ДЄccuracy Load: 43.0 grains IMR4064 2267 fps.ДЄccuracy Load: 47.0 grains IMR4350 2207 fpsДЇactory duplication Load: 44.8 IMR4895 2500 fps.Дў15 grain Jacketed(Woodleigh makes 'em. Out of stock for the Norma and PCI 174 grain ammo.Д«ullet diameter cast and jacketed. Midway lists over priced Norma ammo(it's always been expensive) and reasonably priced Prvi brass. 303 Brit(if its barrel uses that diameter) or 7.62 x 54R. I have gotten commercial 7.7mm from Graf & Sons, and at gunshows, though not lately, I have enough, so I stopped looking, and stopped converting 06 brass.Д«uying new commercial 06 cases to convert is a waste of money, but its your money. I don't know about a turret press but any good C or O frame will do it just fine.Д¬ases can be a few thousandths short, it doesn't hurt function. 2' from the 06 case then run it through the 7.7 sizer die. If I remember right (its been some years) I trimmed about. 003' larger than the 7.7mm (by the specs actual cases vary), but that small amount of rim difference doesn't seem to matter to the Mauser type extractor of the Arisaka. The difference between the two cases is about. 30-06 (LC 53), never annealed anything, never lost a case to cracking. I've made about a hundred or so 7.7mm from GI.

7.7 japanese rifle arisaka