30x57 Mauser

I have never seen one.

Heck, I can't ever remember reading where Kieth, Townsend, Roberts Askins, Niedner, or any of the old guarde ever did it. But no doubt, someone has.
That would complete that familly of chamberings, you haver the 6mm Rem, the 257 Roberts, the 7mm Mauser, and of course, the 8mm Mauser.
I guess the logical question would be "why". The gap between 308 and 30-06 isn't THAT big.
Just as a note, I have seen several of the old 8mm Mausers converted to 8mm-06. They, (I think Brownells), used to make a kit for doing just that. It consisted of a reamer, a headspace gage, and a T-handle that fit into the action to turn the reamer. A friend of mine back in the 70's did one of these. It was rather labor intensive, but the results were not half bad. It shot decent enough, as I remember.........jackie
 
Thanks for the reply. I heard someone talking about it, so wanted to see if it's a good idea or not. It definitley caught my attention!
 
There is no logical progression which makes it necesary. To go to 30 cal from 8x57 you need a new barrel. With the new barrel there is no need to go to an odball wildcat which duplicates a 30-06. In this country 308 and 30-06 are enormously popular and easy to obtain, 8x57 brass is relatively scarce. The same factors which keeps the 8x57 from really catching on in this country would apply to the wildcat. For big game hunting the 8x57 and the 30-06 are practically the same. The 30-06 was "ours" and the 8x57 was "theirs".
 
I disagree

If it wasn't for people experimenting with different Cal. Cart. combos where would the shooting sports be.With a base 57mm Mauser case in a long action you would be able to seat longer heavier bullets out farther for more usable case capacity.Plus if you already had another cal.say 257Rob or 7x57you only need 1 case size to make them all. Yes it may duplicate another cart.balistically but so do alot of others EX.300wsm 300win 30-388 ,308Norm 300rsaum and so on.Wildcatting is what makes shooting sports different from all the other sports WE ARE NEVER HAPPY just need to tweek the case a little more...... lol ........... IMHO Check out P.O. Ackley's Vol.1 300 ICL Tornado, a 257Roberts nkd.to 30 and improved,it would make an eazy neck down from 8mm mauser to the 300 ICL Torn. then fireform
 
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You are correct, and yet I also am correct. these are not mutually exclusive concepts. Have fun, experiment all you want. the guy asked a question, "why hasn't anybody". probably because they were experienting on less trodden ground with some real purpose in mind. I once chambered a rifle and loading dies in #1 morse taper x.31. Why? Because it was the only reamer I owned, and I had a P14 drill parade barrel with enough material left ahead of the hole to rethread. Worked fine, about like a 30-30, but made no real sense. Some wildcats were born of practical nescesity, some to improve performance, a .30x57....yawn. Do it! Nobody is stopping you.
 
The guy I talked to, has one and is driving 165s at 3200fps with 47gr. of powder, don't know what kind. He's had it for a month or so. I like the concept!
 
30 Dunlap

I worked on a rifle about 25 years ago that was chambered for the 30 Dunlap. I dont remember if it had the 7x57 body or '06 body ,but the case was 57 mm long. A guy from the NRA Hq had it. O.W.L.:):):)
 
The 8 x 57 Mauser case is the seminal case. Both the .308 and the 30-06 are evolved from it. Each of these three cases has its own family of cartridges which taken all together make up, what 80%, of all rimless cartridges which use a large rifle primer. The 8 x 57 was probably necked to 30 cal the first time in the 1890's. And it was probably done again maybe every 20 years or so since. The .765 Mauser case (1889, that's 119 years ago) is about half way between a .308 and a 8 x 57 case in shoulder and case length, and shares the same base design. 7.5 x 55 Schmidt-Rubin (1889). 7.5 x 54 French MAS (1924). .303 Jeffries Magnum (1919). The real progress has been made in the strength of the rifles, and in the powders available. Back in the 1880's the best scientific and mathematical minds on the planet were working out the designs for these cases, and working on it as science. This had the importance at the time which now we give to nuclear power, space exploration, and information technology. The mathmatical models for internal balistics were developed at that time. How do you suppose your ballistic programs work? Some of the values are new, but the mathmatical formulas were developed 120 years ago and probably by P. Mauser.
 
30X57 Mauser

Been done. Go to www.accuratereloading.com and navigate to the 30-06 data page. The first paragraph lists the barrels made up for the Hall actioned test rifle and one is a cartridge called the 30 Special which is the 7X57 Mauser necked up to 30 cal. No data for it, but it's out there.
 
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