I had a partial case head separation using a 1.8oz buffer

[stonehog]

stonehog,

Don’t pull down any of those loads just yet.

I’ll bet that if you replace your buffer with an actual buffer of normal weight, you won’t ever see this again.

That tube is really short, so I think you’re going to need another RET (Receiver Extension Tube), another spring and buffer appropriate for this.

I use extra power action/recoil springs for this barrel length and CLGS in a standard carbine RET, with a carbine buffer minimum.

An H1 buffer or heavier will really help slow down the cyclic rate, as will the adjustable gas block.

Did you choke the gas any with that Odin Works gas block?

Yes - but not enough evidently