bolt issues

[Not_A_Llama]

Bolt or bolt carrier group?

[katodevil]

New rifle and bolt, rifle functioned properly with different bolt.

[katodevil]

correction- rifle functioned properly with different bolt group

[Delfuego]

You can troubleshoot it by just changing the bolt, then changing the BC with the original bolt.

Or just take it to BP...

[katodevil]

switched bcg, so have it narrowed down to that

[Delfuego]

It likely the gas key, improperly staked, or obstructed in some way.

BP is still your man, fix it once and be done with it...

[Not_A_Llama]

Loose/leaky gas key (unstaked? No RTV?), or maybe an issue with gas rings (worn out? missing? There should be 3. Damaged? Aligned usually doesn't matter)

[katodevil]

Rtv?

[Not_A_Llama]

Sorry, not RTV - there's a high temp gasket sealer that's showing up in specs. I think it's most commonly a Permatex product. Not the first thing I'd look for - I'd guess most carriers don't have it.