Author Topic: .458x54 (Read 1040 times)

Dirigo · « **on:** November 10, 2005, 04:03:43 PM »

has anyone ever necked up a 7.62x54 mm case to accept a 50 caliber bullet? the sides would have to be blown out andshoulder eliminated.

Reed1911 · « **Reply #1 on:** November 11, 2005, 01:49:50 AM »

Off hand, none that I can find.

Dirigo · « **Reply #2 on:** November 11, 2005, 03:42:13 AM »

nevermind, got my decimals mixed up.50 cal isnt possible.

has .458 been done?

Reed1911 · « **Reply #3 on:** November 11, 2005, 06:29:44 AM »

The .458 has been done.... sort of. You'll end up with a shortened .45-70 Gov't. It would be eaiser to and less expensive to use that brass. If you are wanting to use the Mosin Nagant rifle as a platform all you woul need to do is trim the brass to length and turn the excess off the rim. Much eaiser and less expensive then trying to blow the X54 case out.

CA Dude · « **Reply #4 on:** July 26, 2007, 12:04:27 PM »

I'm current researching doing something close to this. I plan to expand the neck out to take a .411 bullet. I have a Siamese Mauser that has been collecting dust and I have just picked up a .411 barrel with a 1-18" twist. Everything I have found indicates that I will be able to use a bullet that measures less than 1.4 inches and weigh less than 430 grs. I'm planning on 325 gr - 350 gr cast bullets.

I believe I will have something very close to the 405 Winchester or maybe a .411 Hawk.

The brass should be strong enough since the base cartridge runs pressures somewhere between 308 Win and 30--06 Springfield.

I'm sure I could go with another case, such as the 30-40 Krag or the 303 British but the one common thread between all these cartridges is that nothing of them will require gunsmithing to the bolt face or feed rails.

CA Dude