Please delete

[tsagaan]

problem solved.

[Varg Vikernes]

Guessing 308? Probably best to contact Mauser.

[tsagaan]

I couldn't find any contact info on Mauser website except for info@mauser.com. Well, will send an email and see what happens...

[smle-man]

I bought a new Mauser M12 last year and have shot several hundred rounds through it. Despite being very accuracy, it has been very picky with ammos.

For Federal American Eagle 149gr, zero problem whatsoever. However, the gun would act up on military surplus ammos. When shooting Hirtenberger 146gr, the trigger will ocationally jam: after I put the safety off and tried to pull the trigger, the trigger got stuck and wouldn't pull. I had to unlock and lock the handle so that the trigger could pull.

The worst is Malaysian 146gr. Almost every time the trigger stucks and I had to do unlock/lock several times for the trigger to pull.

There's customer service information on Mauser website. Could someone help? Thanks in advance!

There is a very slight dimensional difference between .308 Winchester and 7.62mm NATO. If the chamber is very tight, the 7.62mm rounds may not be completely chambering which in turn is preventing the firing pin from dropping. When you lift and close the bolt a second time you've fully seated the round. Malaysian 7.62mm may not be completely to NATO chamber specs which is aggravating the issue.

If it works fine with .308 just forget the surplus NATO stuff. I found that American Eagle 7.62 is just a hair shorter than NATO standard; when I tried to run it in my 1919A4 it wouldn't get picked up up by the bolt because of being slightly shorter.

Nice looking rifle BTW, I'm envious!

[tsagaan]

There is a very slight dimensional difference between .308 Winchester and 7.62mm NATO. If the chamber is very tight, the 7.62mm rounds may not be completely chambering which in turn is preventing the firing pin from dropping. When you lift and close the bolt a second time you've fully seated the round. Malaysian 7.62mm may not be completely to NATO chamber specs which is aggravating the issue.

If it works fine with .308 just forget the surplus NATO stuff. I found that American Eagle 7.62 is just a hair shorter than NATO standard; when I tried to run it in my 1919A4 it wouldn't get picked up up by the bolt because of being slightly shorter.

Nice looking rifle BTW, I'm envious!

My M1A is very happy to hear this that it can enjoy all the 7.62 ammo by itself

[Flouncer]

Huh ?

What caliber or cartridge is this ???

You bought a $1,700 rifle (new cost wood stocK), a rifle that takes forethought, purpose and dedication to find, let alone acquire, and you shoot surplus ammo (corrosive ??) through it ?

You lost me one page one.

Edit: rant off. dealer maybe ? Was it stolen ??

Edit: the trigger sticks ? WTH ?? Not related to ammo in any way I can think of. Did you clean the weapon when you "aqquire it? Have you disassembled it, detached the bottom metal and trigger, the bolt and looked for goo or crud ? How the He#&# do you stick a Mauser trigger ?

[Hoop]

The chamber is tight and the firing pin spring/trigger assembly isn't strong enough to ignite those milspec primers. Just a guess.

[Horrendo Revolver]

Yeah I don’t understand the philosophy of buying an expensive rifle and running the cheapest possible ammunition through it. I would imagine there is nothing wrong with the rifle. Common sense says it was built with tight tolerances and the ammo that doesn’t work well in it wasn’t.

If I couldn’t find a phone number for customer service I’d contact the dealer post haste.

[Jimmy's]

No reason to shoot milsurp crap in that rifle.

[USMCM16A2]

Cheap **** ammo. That’s like running 85/test gas in your Ferrari. You have a question and your answer right in front of you. A2

[sigstroker]

.308 and 7.62 NATO are not the same caliber. There are slight differences. My .308's have had no trouble with military ammo, but not all .308's are that way.

Mauser and Sauer are both part of the same company. Look for contact with Sauer.

[RNE228]

I know what you meant but that is not what you wrote.

308 Winchester and 7.62 NATO are the same caliber; 0.300

308 Winchester and 7.62 NATO are not the same cartridge; there are slight differences in the cases and the operating pressures. 7.62 NATO has to work in machine guns etc.

OP, try some quality 308 match ammo in that rifle. The trigger issue is probably not related and may need a gunsmith to check out.

.308 and 7.62 NATO are not the same caliber. There are slight differences. My .308's have had no trouble with military ammo, but not all .308's are that way.

Mauser and Sauer are both part of the same company. Look for contact with Sauer.

[LynnJr]

[tsagaan]

Thanks everyone for the reply! It makes more sense that the chamber is tightly fitted to 308 rather than 7.62 NATO. But I have to experiment with more variety of ammos to confirm.

I feel there's nothing wrong shooting surplus ammos through a nice rifle. Competition or hunting is one thing, practicing is another. Dollar aside, it's about applying and improving the skills while a tigher group is always relavant, not absolute. Shooting $1/rnd match can give better results, but not necessarily make better shooters.

Being a veteran racer, I find such Ferrari/gas analogy amusing. Octane does not translate into performance, plain and simple, unless maual specifies. I always run 87 through my air-cooled Duc L-twin and still cruises any A group any day. Don't be the guy riding a busa with the best racing fuel parking every single corner

[Jimmy's]

Well they can be led to the water but you can't make them drink it.