.308 shot in a 30-06

mjbmxz

I have a customer bringing in a 30-06 that he accidentally shot a .308 round. Now it won't eject the 30-06 case unless he smacks the bolt. Any tips on what I can look at before it gets here to fix it for him? I'm gonna clean out the chamber and see if any brass/powder build up is causing it to stick. I just sell/clean firearms, so hopefully it won't it won't need a action/barrel disassemble as that's out of my expertise.

llama

I'd also check headspace. You got a go/no-go gauge set?

Mobuck

Probably has crud in the neck area of the 06 chamber causing the case to stick a little. If there's no other obvious damage and the bolt closes snug on a factory load, it's probably OK. If you have a rubber mallet, give the loose nut behind the trigger a couple of good whacks to realign it.

rufe-snow

Range I use to go to, had a bunch of misguided folks. Who would shoot .308's out of Grands. Mostly out of ignorance and stupidity, I suspicion.

Didn't seem to hurt the Grands, being they had a controlled feed mechanism.

My WAG if the bolt action is a push feed, rather than controlled feed. When the it was fired, the case blew back from gas pressure and mangled the extractor. Look into replacing the extractor, to fix the problem.

Ray B

The above suggestions are valid, to them I would add: a thorough cleaning of the receivers locking recesses. A little grit from the 308 may have imbedded in the lugs, when the force of firing pushes the bolt lug against the recess the grit causes the two surfaces to be virtually locked together. Unless there was structural damage to the gun, checking the extractor/ejector and a complete cleaning should correct the problem.

62fuelie

rufe, I bet those Garands had "Navy" sleeves in the chambers to adapt the chambers to 7.62X51.

I would think the chamber on the customers '06 will need a thorough cleaning and inspection to see if there was any hard deposits laid down where the case mouth blew open to the chamber walls of the long '06 chamber. Maybe a small particle of brass bonded to the wall and needs to be scrubbed out.

Cheechako

Firing 308W ammunition in a 30-06 chamber is something that's done a lot more often than you hear about. Most of the time the results are nothing more serious than a blown out 308W case. So, I would not assume that this guy's problem with hard extraction of 30-06 fired cases has anything to do with the fact that he "accidently" fired a 308W. Sticky extraction is usually the result of one or two things. 1) Firing handloads that are too hot. 2) A dirty chamber. And, it is usually #1. If he is using handloads you probably have found the cause. If not, clean all of the chamber including the locking lug recesses, and try it again.

JMHO

Ray

rufe-snow

quote:Originally posted by 62fuelie
rufe, I bet those Garands had "Navy" sleeves in the chambers to adapt the chambers to 7.62X51.




No sleeves in the dummy's Grands. When they were extracted and ejected, the shoulder was blown forward so much, there was hardly any neck left.

mjbmxz

It wasn't a handload that I know. He actually shot the .308 round from his nephews gun (who I cleaned last night) and accidentally stuck the wrong round in. I'm thinking it's just powder, crud build it. I'll check the extractor, clean the bolt/bolt face and chamber. Being it blew back it wouldn't surprise me if the extractor was damaged. He said a bunch of power came flying out. I really wish I had a go/no gauge set, but I don't carry any smithing tools.

I'll have to check it out. Hopefully it's not over my head.

I really do appreciate it guys!

Cheechako

The guy saying, "a bunch of powder came flying out" puts a whole different picture on what happened. That could mean that the case ruptured or split which could mean that the chamber wall was scoured by the hot gasses. That definitely would result in other cartridges (even those of the correct caliber) getting sticky.

Did he look at the fired 308W case? Was it split? More questions are in order.

I don't think headspace would have been affected so that's one of the last things I'd look for.

JMHO

Herschel

The only time I observed 7.62 NATO being fired in an M1 Rifle was when the military was transitioning from the M1 Rifle to the M-14. The ranges on military posts where matches were being fired provided both 7.62 for use in the M14's and .30 Cal. for use in the M1 Rifles. Active army units had the M-14's and USAR still used M1's. The white box match ammo boxes looked similar. The first time anyone noticed our shooter had loaded his M1 clips with 7.62 was when we were policing up brass after a rapid fire string and the strange looking brass was on the line. Much to my surprise the M1 functioned flawlessly with the 7.62 ammo.