A few questions for you guys and gals

[ganderman]

I posted a little while ago about my Springfield 9mm Ultra Compacts firing pin hole getting jammed with brass. Ok, I took it out to the range the other day and put about 100 rounds through it and saved all the brass. The Wolf ammo shot without a jam or problem, primers looked normal for the most part but I got a little ring around the indentation that you usually get when pressure is too high.

When I shot Remington UMC ammo, the problems started. Instead of an indentation on the primer, the brass is pushed out so my primers actually have a nipple. ?????

I got the same problem switching to Sellior and Bellot except some of the primers had a hole in them instead of an indentation. ?????

What seems to be the problem here?

Thanks,

ganderman

[ganderman]

Either that or the primer is blowing back into the hole.

ganderman

[stans]

Could be an oversized firing pin hole.

[chuckshoun]

Better get that issue resolved, or you'll end up with a firing pin that will be flat on the end, and will punch a hole in every primer. This is not a simple issue. Be sure to check the shape of the end of the firing pin. It should be a hemisphere. If not, you got a problem. If the firing pin is OK, that it's your ammo. Imported ammo could be the problem. Shoot some WWB and find out.

[Joni Lynn]

Have you checked your chamber and bore for size, depth of chamber etc?.......sounds almost like you have an excess pressure problem going on. If the chamber was to snug at the front it could creat a similar problem.

[Harlie]

May need to be confirmed. G'smith or manufactor should be getting involved before a real problem occurs. All signs are related to or indicate pressure issues.

[Mtrclass]

The problem you are describing can be caused by anyone of several things either singularly or in combination.

The most common cause would be high pressures but if you have tried several different brands of factory ammo then it is very unlikely that that is the problem. The barrel could have too much headspacing which is pretty common on lower cost production guns such as the Springfield. Also the firing pin could be undersized in diameter or the firing pin hole in the breechface could be oversized. This is also something pretty common on Springfields.

The short, compact style guns are a lot more sensitive to these problems then a full sized pistol because they tend to unlock a lot faster. Check your primer's for an enlongated indentation, this would be a sign that the slide is unlocking to quickly and might need a heavier recoil spring.

You should have this problem corrected as it can cause a lot of problems including frame cutting the breechface.

[1911Tuner]

Lightened firing pin...such as the one in your Springfield...Lightened firing pin spring OR excessive firing pin spring rate can contribute by retracting the firing pin too quickly...Lightened or shortened mainspring...High pressures...Excessive headspace...Oversized firing pin port or undersized firing pin. Early barrel unlock timing could be a player(Which the recoil spring rate does not have an effect on, by the way) Early unlock timing can be brought on by a too-short link...out-of-spec lower lug or slidestop pin location.

Don't stick a long link in the gun unless you know what to check for in a too-LONG link condition. Too long is just as bad as too short.

Luck!

[ganderman]

I appreciate the answers. I guess I'll just ship it back to Springfield. I bought the gun because the have a good reputation................ I was talking to Megan Clavon in their warranty dept. and she said that their customer service is excellent. I was hoping I wouldn't have to use it when the gun had less than 400 rounds!!!! :mad:

ganderman