I am thinking they do. Mine had been fired when I got it and I know my dealer had not touched it. Now they may not test everyone that leaves the factory but it seems they test fire some…
I was under the distinct impression that SF, LMT, and plenty of companies test fire 100% of what goes through. I know when SF started, they did that since there’s no other way to test that the POI shift for the cans is within their tolerances - again, I consider that to be a VERY GOOD thing, given the lifetime of SF cans.
Yes we do test fire every single suppressor for POI shift and group size. It is the last thing that is done to sign off on the build. It has to have less than than 1 MOA shift and 1MOA group. We zero the rifle and continue to do unsurpressed checks often through out the day to make sure the rifle stays in spec. With test fire and R&D we use close to 600K rounds a year. It is a very expensive set up with cold air induction into the chamber after each suppressor test and temp gauges on the barrels, round count logs, accuracy logs (unsurppressed) and rebarrel them many times a year. We use a acoustic target and print the targets right there at the range. The targets live with the build sheet and are filed away for the life of the suppressor. We do everything possible to make sure you get the best suppressor system.