by obremski on Sat Jun 30, 2018 10:25 pm
I've shot a bunch of 9mms with a can, and probably my favorite hosts/least face-blasty (to me) are my Browning Hi-Power, Sig P229, Walther P99, and a CZ P01 that I recently sold...my Glocks, and honestly most other 9mms that have a wide open top of the slide when cycling, tend to spatter a bit more. The Sig Classic P-series guns are generally pretty good about it, but nearly all the other guns that lock up the same way suffer to some extent with the same blowback problem. Metal framed CZs fortunately don't have an open top slide like the rest, so there's a far smaller window to get blowback from on them.
The type of can, and the type of baffles or core, also have a huge impact on how much blowback you get...
I don't have a USP in 9mm but my 45, with the correct recoil spring assembly (the Tactical/SD model guns have different recoil spring assemblies than non-Tactical USPs), my USP is really nice, as well as quiet, to shoot suppressed. Without the Tactical model specific recoil spring assembly it does have a bit more blowback and doesn't seem to be as quiet, but it's still not terrible.
I don't have a 1911 in 9mm either...but if the 9mm acts like a 45 1911, then it should be fine, too.
I honestly don't recall how my Beretta 92 was as a can host; I don't think it was bad, but I just don't shoot it much. I should probably take it out and remind myself...