I've got the 338 PH and a Checkmate QD on the way. The 338 PH with a brake does amazing things. My light-barreled, previously unbraked .338 LM feels like a .308 and sounds like a .223. I know that didn't answer your question directly, but it's my way of saying that I think they make a superior product and that I have confidence in them. I've also emailed them directly two or three times with technical questions and they replied promptly to my questions. In one case, they specifically recommended a less expensive model than the one I asked about.
Edited by syncerus (08/28/15 04:36 PM)
Edit Reason: more info
NRA Endowment & DSC Lifer