.375x57 rimless/ 375X57 MS or as J.D.Jones called it a 100 years later a 375 JDJ. All the power you're likely to need.
Doug Humbarger NRA Life member Tonkin Gulf Yacht Club 72'73. Yankee Station
Try to look unimportant. Your enemy might be low on ammo.
Posts: 8351 | Location: Jennings Louisiana, Arkansas by way of Alabama by way of South Carloina by way of County Antrim Irland by way of Lanarkshire Scotland. | Registered: 02 November 2001
375 JDJ is based on the rimmed 444 Marlin case; I load a lot of them for my Contender. So, don't put it in a Mauser; it is a challenge to make them feed. Just make it a 375-57mm.
Posts: 17368 | Location: USA | Registered: 02 August 2009
Have you tried it in it's original chambering? Even though the bore is rough?
I had a Colt 1911...dated around 1913 so had the original half-moon rearsight...the bore was like a downpipe from a gutter. Rough, the rifling was rounded and in truth could be seen mostly as a spiral black line up the barrel. Yet offhand at twenty yards it would put all its shots inside a 2" circle.
So my message is suck it and see. It may be that looks are deceptive in these old guns. They sometimes surprise us!
Posts: 6823 | Location: United Kingdom | Registered: 18 November 2007
Strange , I also have a rough 1913 - 1911, It'll keep'em all in the black at 50 ft.
quote:
Originally posted by enfieldspares: Have you tried it in it's original chambering? Even though the bore is rough?
I had a Colt 1911...dated around 1913 so had the original half-moon rearsight...the bore was like a downpipe from a gutter. Rough, the rifling was rounded and in truth could be seen mostly as a spiral black line up the barrel. Yet offhand at twenty yards it would put all its shots inside a 2" circle.
So my message is suck it and see. It may be that looks are deceptive in these old guns. They sometimes surprise us!
Posts: 6517 | Location: NY, NY | Registered: 28 November 2005
1: Yes. 2: Reboring a 35 caliber barrel to 9.3 can't be done because the land diameter of a 9.3 is .358; even your 9mm, with a pitted bore, would likely not clean up on the lands if rebored. 3: Ergo, you have to go to .375.
Posts: 17368 | Location: USA | Registered: 02 August 2009
Easy; just use an expander and make them from the most easily available brass; if you can get 9.3x57, which is available, that would be one you don't have to trim. The other two on your list are not available, very easily, if at all. I would make them out of 30-06 which most guys have lots of. Or 8mm. Of course you have to expand them larger at first to get the larger shoulder of the 375; like to .400; still easy. Basically, make it straight, then neck as normal in a FL die. CH4D for dies.
Posts: 17368 | Location: USA | Registered: 02 August 2009
Making cases for my 9.5X57 Mannlicher Schoenauer was as easy as falling off a log. i have an expander which does the job on 8X57 cases in one pass and then it's just a question of fire forming in the rifle's chamber.
I loaded it up with 200 grain flat nosed bullets and took it hunting last season. I ended up taking two deer with it, despite having to shoot left handed because of a problem with my right eye.
