Rebore a 9x57 to what???

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02 September 2019, 04:10

richj

Rebore a 9x57 to what???

I have a 9x57 with a rough barrel. What can I make out of it?

Barrel is half round, full rib, integral front sight.

02 September 2019, 04:48

D Humbarger

.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.

02 September 2019, 05:25

dpcd

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.

02 September 2019, 12:44

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!

02 September 2019, 16:59

richj

I shot it. I have Kynoch factory and reloads.

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!

03 September 2019, 02:46

Bobster

9.3 x 57?

quote:
Originally posted by richj:
I have a 9x57 with a rough barrel. What can I make out of it?

Barrel is half round, full rib, integral front sight.

03 September 2019, 03:06

theback40

Had a 9x57 with hit and miss rifling, cleaned up nicely as a 9.5x57. JES did the job.

03 September 2019, 18:44

richj

Is 9.5x57 and 375x57 the same. I'm guessing I could expand the neck on the 9.3 brass because there is no 9x57 brass

03 September 2019, 20:15

dpcd

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.

03 September 2019, 23:48

richj

Just wondering if I have to form cases if I go 9.5x57. Which brass is easier to find:

9x57
9.3x57
9.5x57

and what about dies

03 September 2019, 23:58

dpcd

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.

04 September 2019, 03:23

theback40

I'm already sending one fellow some 9.5 cases I made on 06 brass, I can send a few to you too richj if you want a visual.

04 September 2019, 07:29

xausa

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.