Originally Posted by BC38

I'm thinking maybe Buffalo Bore actually has the pressure testing equipment and does a LOT more pressure testing of their production ammo than the other companies manufacturing the more "bulk rather than boutique" ammo.
That would explain why the other companies load their +P on the conservative end of the scale - leaving a bigger margin for error (variance) than Buffalo Bore. I'm thinking BB ammo is loaded right at the ragged upper edge of the pressure spec, and they do a lot more QC to make sure every batch is right at the top of - but not above - the max SAAMI spec.
That would add significant cost to the manufacturing process - which and would explain their boutique pricing, as well as their "edge of the envelope" performance.