Hsm problems?

[Mike D]

Hsm problems?

That would be great CS, however I don't need it replaced because I don't want to use it anymore and not looking for a "freebie".. I was really just wondering if anyone had this same or similar issue..

Ok your money so whatever.

To answer your question I've shot hundreds of rounds of their ammo in various calibers with no issues. The most accurate factory ammo I have found.

[Slick8]

I will echo Mike above, I've found it to be the best and most consistent I've shot. If you look at their spec's, it's typically loaded somewhat mild as compared to other factory ammo.

The smith a Cooper Firearms told me they use a lot of hsm when proof testing their rifles to ensure they meet the .5 moa guarantee.

Let us know what hsm says about it.

[J.B.]

That would be great CS, however I don't need it replaced because I don't want to use it anymore and not looking for a "freebie".. I was really just wondering if anyone had this same or similar issue..

You might be doing other people a favor by contacting HSM. They may have had a bad lot that were overloaded. It would be worth a call. Blowing a primer like that is excessive pressure.

[gumbl3]

I shot the same rounds out of my 308 probably 3 years ago or so. I had trouble extracting the rounds after firing, not sure why this would occur, but I haven't shot them since. Were these 308 or labeled 7.62?

That's over pressure as well

[Black Ice]

.

[randal]

You might be doing other people a favor by contacting HSM. They may have had a bad lot that were overloaded. It would be worth a call. Blowing a primer like that is excessive pressure.

Yeah I didn't think about that.. I'll contact them today and let y'all know what they say..

[hoythitman]

Usually a sign of excessive pressure. Either to hot a load or bullet seating depth is to long. I wouldn't shoot anymore of those rounds. The gas leaking past the primer will eat up your bolt face.

I've seen overpressure flatten a primer never seen it blow gas out. I guess I've been doing good since I haven't managed to do that. lol.

[M16]

I've seen overpressure flatten a primer never seen it blow gas out. I guess I've been doing good since I haven't managed to do that. lol.

I've seen it several times. Firing pins that are too long can cause it but it doesn't appear to be the case with this one since it leaked around the side. Berger bullets are long for their weight. Rifles that aren't specifically chambered for them can have problems when the bullets aren't seated deep enough. I'd be willing to bet that the round is too long for his chamber. The bullet gets jammed too far into the rifling and excessive pressure is the result. One way to check is take a sharpie and color the tip of the bullet. Then chamber the round. Pull it back out and look for rifling marks on the bullet.

[SOLID EAGLE]

I've seen it several times. Firing pins that are too long can cause it but it doesn't appear to be the case with this one since it leaked around the side. Berger bullets are long for their weight. Rifles that aren't specifically chambered for them can have problems when the bullets aren't seated deep enough. I'd be willing to bet that the round is too long for his chamber. The bullet gets jammed too far into the rifling and excessive pressure is the result. One way to check is take a sharpie and color the tip of the bullet. Then chamber the round. Pull it back out and look for rifling marks on the bullet.

This is probably correct. But if they are chambering correctly it way be due to bad Winchester primers. Just a thought...

http://discussions.texasbowhunter.co...hester+primers

[gumbl3]

Just went and burned up some of the HSM I have, needed the brass and they use lapua!

I looked at my cases after reading this and found every one of the primers were pretty flattened. They must load pretty hot!

[randal]

Called them, they wanted a pic, then wanted a pic of the rest if the brass and said
"From this picture it really looks like the firing pin hole in the bolt is oversized. There is way too much primer flow back into the bolt head. I'd have that looked at by a gunsmith. That could also indicate a headspace problem which could have contributed to the leaky primer."

[randal]

[Mike D]

There is some primer flow but I'm not necessarily buying the headspace response.

I'm actually quite surprised at their response.

That looks to be Winchester primers and they are notoriously soft.

[randal]

There is some primer flow but I'm not necessarily buying the headspace response.

I'm actually quite surprised at their response.

That looks to be Winchester primers and they are notoriously soft.

So should I take my gun to a gunsmith you think?

[randal]

Took it to gun smith today he said there isn't anything wrong with the gun.. Emailed hsm back and let them know that.. Will see what the response is..