Can a 9.x57 become a 9.3x62?

quote:

Originally posted by bluefish:
Can a 9.x57 become a 9.3x62?

I believe a lot of Husky x57s that came in through Simpson’s have been reamed out.

Are you asking if a 9.0x57 can become a 9.3x62, or are you asking if a 9.3x57 can become a 9.3x62?

9x57 is .355
9.3 is .366?

Will 11 thou rebore clean up the rifling?

I'm in the same boat, shot out barrel on a 9x57.

9x57 to 9.3x62 sorry for any confusion

Sorry. Was ass/U/ming the 9.3 x 57

with enough treasure, time, and talent, all things are possible - it would require a rebore or rebarrel, as other have stated, and as long as it's "standard" length, that can happen ..

as far as know there isn't, directly, a 9x63, though the 35 whelen is pretty darn close, which is somewhat of a simpler project

That answer to either is yes, assuming the reamer cleans up the existing chamber.

Several 9,3x57's sent to me for rechambering had chamber necks that were larger than what the reamer cuts. The result would have been a neck with an unwanted step in it. Always chamber cast first.

Funny story, I once bought a rifle advertised as a 9,3x57. It came with a box of Norma 9,3x57 ammo. Half of which had been fired and the fired cases were in the box. I got it home, went to clean the bore and my 9,3 jag would not start. Busted out the pin gages and found the bore quire undersized. I slugged it and did a camber cast only to find, the rifle started life as a 9x57 that had simply been reamed with a 9,3x57 reamer. The neck was appropriate for a 9,3x57 cartridge. Sure enough, they'd fired a .365" projectile down a .356" groove barrel.

I simply rechambered to .35 Whelen.

Given that the 9,3x62 is loaded to higher pressures than the 57, I'd not recommend rechambering a 9x57 with a 9,3x62 chamber reamer.

The Germans believed that tight bores were more accurate. I haven't had time to write up something about it, but Jon Speed sent me some original Mauser documents testing both bore diameter and the correlation of accuracy and pressure, along with a document regarding tapered bores. Interesting stuff!

z1r, I had the exact opposite experience. I bought a 9x57 from an auction house, and when it came in I was quite pissed to find it had been fiddle with. Someone had done a bunch of "accuracy" improvements to a classic rifle. What they were too ignorant to understand, was that they were shooting a 9mm bullet down a bore indented for 9.3.

And... final story on the topic. I have a beautiful Haenel commercial 88 that I bought years ago from a wonderful man, now deceased. If you slug the bore, you would think it was a 9.3, but after a significant amount of research and correspondence, and carefully measuring a few original cartridges, the bullets are indeed .375. The cartridge is a very rare DWM "9.4x56". It's a cute, light, thumper with a heck of a whollop.

If its a 98 Mauser, not a 95 or 96 IMO,

quote:

Originally posted by jeffeosso:
with enough treasure, time, and talent, all things are possible - it would require a rebore or rebarrel, as other have stated, and as long as it's "standard" length, that can happen ..

as far as know there isn't, directly, a 9x63, though the 35 whelen is pretty darn close, which is somewhat of a simpler project

I Believe RWS developed a 9x63, or something very similar, based on the 9.3x62 case back in the 1930’s, but very few rifles were ever made.