I purchased
this Tikka 22 Creedmoor from Landboy. Discovered in the process it was the 223 I'd sold him a while back, and he'd rechambered it.
Took it out yesterday with Alpha brass, WLRP, Superperformance and Hornady 75 BTHPs jammed 0.01" into the lands. Scope is a 6x MQ.
Never did find pressure, at least as measured by primer cratering. I'm liking the 41 grain load.
Might ladder up to the book max of 43+ just to see.
All at 100 yards, all three shot groups.