Nice videos of a supressor on a 30cal tactical rifle.

Suputin said:
The difference is the regular ammo will actually kill the target and if you can get the subsonic on target, it will likely only wound and not a very impressive wound at that.

So while the subsonic sound is nice, the terminal effects aren't.
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What do you base that on?

Boltgun
 
Suputin said:
About 5 years of subsonic load development and experimentation including terminal performance testing. I have developed numerous subsonic loads in 4 different rifle calibers.
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what method of terminal performance testing was done? What was your definition of ideal terminal performance? Not challenging you but I am curious as to the testing parameters. Do you have any published/unpublished final reports?

Boltgun
 
A .30 cal bullet at about 950fps (either a match or hunting bullet) will not perform very well terminally. The rounds will behave like a FMJ bullet does at low impact velocities. ie: much like poking a pencil into your target. There will be no violent upset, no temporary cavity and only a limited crush cavity in the wound. Also, range estimation is critical because the trajectory rapidly falls off.
 
it is my understanding that the round is designed more for close range police work than a long range cartridge. But the effects out to 200 yards are very effective....terminal. Is this wrong?
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Subsonics have NO business in LE work. Subsonics are a highly specialized and very limited round for special needs. Typically the "effective" range of a subsonic is inside 200 yds.

The primary problem with a subsonic rifle round is its complete lack of expansion at any range. A pointed subsonic bullet will simply push aside tissue, leaving a very small wound. A flat nosed subsonic will cut and crush a caliber sized hole, but nothing like the wound a supersonic round will create.

Subsonics penetrate to an incredible extent and are much more likely to ricochet.

Then of course there is the artillery like trajectory and terrible wind bucking characteristics of a very slow moving projectile. The marksman using subsonics must be VERY experienced with the trajectory as well as range estimation which is absolutely critical in order to connect a shot.

The terminal performance testing we did was into wet phonebook side by side with a conventional high velocity round.
 
I read an article by an aussie who made a suppressed .44 mag bolt action based on a lee enfield. According to him when using subsonic heavy grain, flat nose bullets the effect on wild hogs was devestating. God only knows if it would stop a wet phone book......lol. For the sake of thoroughness and comparison, the .300 Whisper firing a 240-grain Sierra MatchKing HPBT at 1000 fps generates 533 foot pounds of energy at the muzzle. It will retain about 70% of that energy out to 400 meters. That's about 375 fpe, or more than most 9mm Para loads at the muzzle of a Beretta 92. Pretty impressive
 
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http://www.ebr-inc.net/detail.asp?id=2

Suputin, it seems like this disagrees with your comments on terminal ballistics. This link is to the round used in the video ...
read the testimonial and press links. Not that it matters to me, but i was impressed with the difference in report on the two different videos.
 
There's nothing as sweet sounding as a 338 LM sliding
through a pgw surpressor. That 308 came a clean 2nd!

Thanks for the vids.

--PM
 
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