Took my DLO cut/welded PPSH to the range last weekend with 4 drums of Chiny copper washed ammo. First drum was exciting as I usually shoot about 10 round bursts, but this time it ran away after I let off the trigger and fired about 25 rounds. Tried again and it did the same thing. Took out the bolt and about half of the sear catch area had chipped off. Put in a new polish bolt and it ran about 4-5 rounds after letting off the trigger. Noticed that the sear had been rounded off a bit from the broken bolt, so filed it square and it seems to be okay.
I know that the Chinese ammo is hot, but wonder if the bolt was the culprit? Anyone else ever have a similar experience? BP