Palmetto State .308

[Lincoln7]

I'm not sure of what malfunctions you're describing. Maybe pictures will help.

As for the receiver extension, Palmetto uses a standard size carbine buffer with an A5 length receiver extension.

[jwfuhrman]

Malfunction is just as described. It stovepipes the last case fired, but its also has stripped the next round off and has it partially chambered. As if the last round fired that is stovepiped is bouncing back into the gun.

[Lincoln7]

Mine was doing this when it was overgassed and extractor tension was low causing the bolt to lose control of the empty casing. A combination of dialing down gas pressure, heavier buffer, heavier buffer spring, and heavier extractor spring may help you out. What is your configuration in regards to these components?

[jwfuhrman]

Mine was doing this when it was overgassed and extractor tension was low causing the bolt to lose control of the empty casing. A combination of dialing down gas pressure, heavier buffer, heavier buffer spring, and heavier extractor spring may help you out. What is your configuration in regards to these components?

Here it is again -

PA10 Complete Lower (as it comes completed from PSA - has Carbine H Buffer, no clue what spring)
PA10 stripped upped
PA10 Nickle Boron BCG
BCM Mod 4 762 CH
RAINIER ARMS SELECT MATCH 16in Midlength Barrel
BCM Lo-Pro Gas Block
Midwest Industries 15in Keymod Handguard

[MistWolf]

Malfunction is just as described. It stovepipes the last case fired, but its also has stripped the next round off and has it partially chambered. As if the last round fired that is stovepiped is bouncing back into the gun.

If the fresh round is being fed by the bolt catching the rim of the case, you are having issues with your extractor, ejector or both.

If the bolt is over riding the rim and pushing the case from past the rim and up on the body, your main problem is from short stroking

[jwfuhrman]

If the fresh round is being fed by the bolt catching the rim of the case, you are having issues with your extractor, ejector or both.

If the bolt is over riding the rim and pushing the case from past way up the body, your main problem is from short stroking

And that's the issue I'm having trouble figuring out. The cases don't looked "marred" from a over rid to where its loading further up the case body but I'm not sure. It will literally shoot 4 or 5 rounds perfectly fine then do this malfunction, clear it, then go for 3 or 4 rounds. Seems like the "hotter" the gun gets, the more it malfunctions.

I swapped the standard H Buffer out for a A5H0 buffer. Gonna see if the slightly longer, lighter buffer helps any tonight.

[MistWolf]

I would also look into the possibility of a weak spring. It should be a rifle length spring

[jwfuhrman]

I would also look into the possibility of a weak spring. It should be a rifle length spring

OHHHHH RLY. Good to know, I'll swap that out as well! Thanks.

[MistWolf]

The longer buffer will only make your problems worse because it will restrict the travel of the BCG.

Next time the rifle malfunctions, look to see if the bolt is catching the rim or not before clearing it

[Lincoln7]

I'd try a heavier weight buffer spring and a carbine sized heavier (H3) buffer. The A5 buffer is for an A5 receiver extension and a 5.56 carrier travel.