Originally Posted by
hardcastonly
to truly be successful in suppressor use the projectile must not exceed the speed of sound
Only if your definition of “success” is to be as quiet as a firearm can be. If “success” is defined by bringing the report of the shot down below a damaging threshold to allow safe shooting universal hearing protection, then sub-Sonic velocity is not required. I shoot thousands of rounds every year super-sonic through suppressors, most of them around Mach 2.5-3.
Originally Posted by
hardcastonly
I fully expect sales of the 300 BLK in AR15 kits to get far more popular
The market popularity of 300 blackout has peaked and waned, several years ago. It remains a popular option, among several, but it’s fallen far from the popularity it once enjoyed.
Originally Posted by
hardcastonly
this 300 blk, is not a hunting cartridge or a battle rifle cartridge,
it can be loaded to nearly duplicate the 7.62/39 AK cartridge if used unsuppressed
I find this statement odd. The 300 Whisper was designed with various applications in mind, and predominantly enjoyed the majority of its success as a hunting cartridge (some success acknowledged in IMHSA competition). The 300 Blackout was 100% designed as a “battle cartridge, and is 100% a replication of the Whisper. Of note, of course, the x39 you’ve referenced is one of the 3 most common battle cartridges in the entire world...
So indeed, the 300blk is a hunting cartridge AND a battle cartridge, with three decades of provenance behind it.