6.5 Grendel PTG Reamer

[BjornF16]

I'm confused, how does 1 company, provide two different brands of barrels, both supposedly cut with the same SAAMI spec reamer, but have two different throat measurements ? If everything is to SAAMI spec, why are the low end barrel chambers not the same as the high end ones ? If there are no problems why are they providing a solution ? Not trying to bash anyone just asking questions that raise concern for my friends and myself

Sojor

IIRC, Satern Machining is using two different reamers for their two different lines.

There is not a "reamer spec"...just a SAAMI minimum chamber and maximum cartridge. It is up to the reamer toolmaker and chamberer to ensure chamber is reamed to SAAMI spec.