.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.
Posts: 8352 | 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: 17479 | 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: 6824 | 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: 6563 | 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: 17479 | 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: 17479 | 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.
