John,

I disagree with that case ruptured because it was a very overpressured double load. Look at the first picture of the head. If it was high pressure the case would have pushed very hard back against the breech face and there would have been an extrctor and extractor hole impression the case. There is not. In fact if you look at the black soot that is on the case you can see that it came up from around the bottom of the case (where it ruptured) and even outlined the extractor, but the area of the extractor has not impression alone any marks of high pressure. Also notice that a lot of that case, contrary to what he claims, was NOT inside the chamber. That's a lot of unsupported web where it blew and he claims it was locked up at the time. Couldn't have been.

Joe

Joe

I've seen numerous blown 45 ACP cases. From overloads, from bullets not seated deep enough (allowed firing when not in battery) and from to much "throating".

Where are the pictures you are talking about?

Larry Gibson

Hi Larry,

They are are Castboolits Forum. I forget the thread, What The Hell Happened...or something like that.

Larry,

There's no sign what so ever of the extractor riding over the rim in the very first picture. There is also no signs of soot round primer pocket. There is no evidence that the case head pressed hard under extreme pressure against the breech face. Where's the primer? If if the breech was locked and hey had to rack it back the primer should have still been there. One more thing...look on the last pages of the post and the other fellow that hand pictures of high pressure. Not only can you seen an imprint of the extractor and it's hole on the case head, you can see the imprint of the ejector slot. That round fired before complete lockup. Read all his post about the primer seating problem he was having.

Joe

If the pistol was feeding correctly the rim slips up under the extractor ala controlled feed so there shouldn't be an extractor mark. There appears to be soot toward the bottom to me but at any rate where's the primer? If the primer pocket wasn't enlarged it should still be there as the breach stayed closed. If it fired out of battery then the slide would have gone back and ejected the case. The expanded area is the right size gor a pressure bulge into the ramp area. A friend recently had an occurance exactly like this one and we traced it to a double charge.

Larry Gibson

Larry,

If the round let loose and the slide was in battery, then with a rupture like that it should have blown the magazine out of the pistol and the grips off it too. I'm seen enough of these happen. We're not getting the full true story pardner.

Joe

More than likely some of the details are missing. Most often when we get reports of "blow ups" a lot of the details are missing. I've seen a couple blow without the magazine or the grips coming off/out. The last one only the bottom of the magazine blew off. Seems to be a function of how many rounds are still in the magazine occupying space. The more rounds in the mag the more likely the magazine will get blown out and the grips cracked or blown off too. Not something I'm inclined to run tests on to see either!

Larry Gibson

I agree with the number of rounds left in the mag. I've seen many ways too. Seems the grips at least want to "swell". There are detail missing.

Yes there are details missing. The thread has gone off on a tangent. Instead of trying to learn the details to find out what happened lots of opinions on other stuff. We've our opinions and I'll stick with those pending further enlightening details.

Larry Gibson