Some random thoughts on suppression
The ear-damaging sound signature of a firearm comes mostly from two sources....
#1, the "muzzle blast" of excess gas pressure exiting the bore (think muffler VS no muffler on a hotrod)
#2, the supersonic crack of the projectile (and gases) "breaking the sound barrier"....sonic boom.
BOTH effects create potentially damaging levels of noise. Suppression of supersonic projectiles does very little to mitigate damaging noise EXCEPT that with a long barrel it can move the origination point out far enough that you _can_ hunt without hearing protection. I would never target shoot without hearing protection, in fact I've shot some AR's that actually seem to hurt my ears MORE with the suppressor than naked.
-There are two ways to make usable energy in projectile weapons.....
#1, the most common, is through velocity. Doubling the velocity squares the energy. cheap and easy energy gain (not always useful, but still real energy) downside
#2, (the best for suppressed rifles IMO) is via weight of projectile. Double the weight, double the energy.
THEREFORE.....IMO the only USEFUL place for a suppressor is on a subsonic round.
I do play with subsonic 338's (as well as 22's, 30's, 50's etc) and, again In My Opinion, they become marginally useful with the 300gr projectiles. A LARGE 338 bullet will make around 700fp of energy at 100yds......this is less than 1/2 the energy of a 30-30 Winchester Model 94.
just something to think about....
al