Have run Gemtech HVT, Gemtech Standstorm, YHM Phantom, and Thunderbeast 30P-1.
On my (12" barrel) 300BLK (my recipe ammo), the Thunderbeast was most accurate and, without metering, was quietest, but not much more so than the Sandstorm.
The YHM is a great deal, but is heavy as hell, sound suppression is pretty good, durability is great. Did I mention it is heavy?
The Gemtech is a good can, no better in suppression than the YHM, but is lighter weight.
The Sandstorm and 30P-1 are the lightest by a significant margin, and have the best suppression. The threading on the 30P-1 is tight, be sure your thread job on the rifle is a good one if you want the Thunderbeast.
I never recommend QD mounts on weapons where precision and accuracy are paramount. I've seen bad stuff happen with QDs. Thread on's are very secure (use a little anti-seize to keep them from walking back) and repeatability is great with the better cans.
In suppressors, as in most things, you get what you pay for.
Hope it helps.
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