7x57 mouser
 

i was told its the same as a 7mm but 7mm shells won;t work. the only thing on the rifle says mouser, tried alot of shells and the 7x57 mouser shell was the only one that works but doesn't shoot accuate, it flip flops and the pattern is like a foot away from each other at 20 feet . somethings wrong, any suggestions

RE: 7x57 mouser
 

Be careful. 7mm refers to the diameter of the bullet. 7mm=.284. There are numerous cartridges chambered in 7mm. A partial list includes 7mm rem mag, 7x57 mauser, 7mm-08, 280 rem also called 7mm express, and numerous other saum, wsm, etcs.


Saying you a shoot a 7mm, is like saying you drive a chevy. I might assume it is a pickup, but it could be a car, suv, mini-van, or a cargo truck.

RE: 7x57 mouser
 

I would advise you to take it to a good gunsmith and have a chamber cast made. This will tell you exactly what you have. The process is not that difficult, or time consuming. I've done it before myself, using melted sulphur with the barrel ahead of the chamber plugged with a cigarette filter.

RE: 7x57 mouser
 

As was stated in the other forum it sounds like you have a 8mmx57mm mauser. What does the brass look like after you fire it?

RE: 7x57 mouser
 

Post a pic or accurately describe all markings on the weaponand the overall length, length of the barrel, style of the stock etc.

I'd be willing to bet someone here will be able to identify the make and model, ... but as for the chambering .. unless it is clearly marked you will be guessing .. and even if clearly marked the chamber could be "cooked" enough that it is either not safe or will never throw a 10 inch group again.

A chamber cast is your best and most prudentbet.

RE: 7x57 mouser
 

My "mouser" has 4 legs and comes to me when i say "here kitty kitty kitty"... ha ha ha... Sorry, i had to do it!

DM

RE: 7x57 mouser
 

It was too easy .. i couldn't do it ... but I knew it was coming... :D

RE: 7x57 mouser
 

i tryed the 8mm shells, the 7mm shells but they didn't work or fit right, i had a guy that sells ammo fit it and he is the one that decided it was a 7x57, i was told it was a 8mm but when i bought the bullets they didn;t fit. thats why i took the rifle to him. i tryed to down load a pic but it said the file was to big. i;ll try later

RE: 7x57 mouser
 

You're probably not going to believe this, but I have a friend who had a gun like the poster is describing many years ago....Guess what was on the barrel??
Yep, the word "Mouser". Gad!! Wonder if it's the same gun?? What's the chances....???? You couldn't hit the side of a barn from the inside with it, either. If I remember right it was chambered in 30/06.....

RE: 7x57 mouser
 

I wonder if if the Mauser stamp is a manufacturing stamp and not a chambering stamp. Since accuracy is in the toilet with a tumbling bulletand a 8 x 57 will not chamber, I bet it's a 30 caliber something, maybe 30-06 conversion.

I would take it to a gunsmith, not a guy that sells ammo.

RE: 7x57 mouser
 

Contrary to the implications of the word "mouser", the Mausers are not intended for shooting mice! IF you are shooting 7X57mm rounds in yours, and accuracy is as you describe, could it be that the 7mm (.284") bullets are too small around?? If so, but the 7X57mm ammo is easy to chamber, I suspect your rifle may be an 8X57mm (7.92X57JS) that uses .323" bullets instead of being a 7X57mm.

Ask a knowledgable friend, or the local gunsmith, to help you determine the correct ammunition!

RE: 7x57 mouser
 

I have heard that the early 7.92 x57 was in fact .318 bore . If this is an early "small ring" or 93 mauser or "clone" with a tight chamber the modern JS 8x57 that is .323 may not chamber as the neck would be at or beyond max.tolarance for a .318 bore .

Side by side with a 30 cal (of 308dia) the bore ought to be obviously larger or smaller .
If your mouser is a correct take from the gun you could have some odd 1 off wildcat or a "siamese" mauser with an
odd bore (7.5 or 7.7) which will not chamber 8x57 but would 7x57 .

It could also be that you have a bbl intended for very heavy or light bullets. I have a 1-12 308 that won't shoot 180's
and an 1-8.5 30-06 that won't shoot 130's . The 06' was a special order freak even in 1965 .

RE: 7x57 mouser
 

Actually, although there were some civilian rifles made in Germany in 8X57J (7,8X57mm) with .318" bores, the military rifles (GEW 1888's) made for that round were actually .322"-.323" in the groove diameter and when Germany adopted the 154-grain, .323"Spitzegeschoss (pointed bullet) in 1905,many M88's were converted to fire this load. The conversion consisted merely of reaming the chamber throats larger so the cartridge case could release the .323" bullets. Nothing else was done to them. (As a fact, IF the cartridge case neck expands enough to freely release the bullet, it is conceivably possible to shoot almost any size of bullet through a smaller bore. The most extreme example of this I have heard of -in the American Rifleman-was of a guy who rechambered a 6.5mm Arisaka to .30/'06, but left the bore at .264". He was shooting .30/'06 ammo thru this barrel. Bullets were being swaged down to .264" to get out the muzzle!)

In other words, the very first rifles made to shoot the 7,8X57J round had bores of .322"-.323" to start with, and fired .318" bullets! I assume the original, heavy, round-nose .318" bullets depended on swaging up on firing to obturate the larger groove-diameter bores.

That's strange, since the .308 Win. was introduced by Winchester in their Model 70 Featherweight with the 1/12" twist as standard. The one I owned would shoot every weight bulletfrom 110 up to 220 grains with quite good accuracy. I loaded mine with the Hornady 220-grain round nose & 48 grains of Norma N205powder for a MV of 2300 FPS. This load was quite accurate from the 1/12" twist 22" Winchester barrel.

RE: 7x57 mouser
 

elde I read that about the Arisaka as well. It was an article about them being the strongest action ever I think. Imagine what kind of pressure they were getting with that combo..lol.

RE: 7x57 mouser
 

One thing you need to determine is whether it's the 7x57 or the 7x57R.They look almost identical but if I remember right the R stands for rimmed.That is to say the casing is rimmed near the bottom.