Bartholomew Roberts
Member
You just compared the SLOWEST 5.7x28 to the FASTEST .22mag
No, I compared a 40gr Hornady VMAX SS197 to a 40gr CCI MaxiMag JHP. The reason I chose the SS197 for comparison is because the original post I replied to was asserting that the 5.7x28 round was not really a pistol caliber and I wanted to take a look at the ballistics gel shots to see if that was true. It isn't - the 5.7x28 destroys tissue by crushing a wound channel like a pistol caliber. It doesn't move fast enough for its size to create damage through a big stretch cavity.
I then used a comparitive round (the Remington 40gr JHP because it just so happened that the same guy had also tested that in ballistics gel from a rifle) to make the point that 5.7x28 is a pistol caliber round.
In both cases, I was careful to specify the rounds being compared as precisely as possible, so I am not sure exactly why you feel so put out.
2,585fps out of a PS90 barrel, which is only 16 inches, still BLOWS AWAY your best .22mag loads out of a 22" barrel.
I wasn't aware of that ammunition. Thanks for pointing it out. If we take the manufacturer's claim at face value, then it looks like this particular round does indeed exceed the typical performance of most 5.7x28/.22WMR - and at only $1.20 a round too. It will be interesting to see how this round develops.
Sorry buddy, but 5.7x28 is a more powerful round, period.
Is there a practical difference in that power? I've read the manufacturer's claims of what the round does - they claim expansion to 0.38", gel penetration of 21" (which is probably excessive for home defense).
The best comparison we have in .22WMR terms is the CCI 40gr TMJ - which completely penetrated 16" of ballistics gel and hit the berm. No expansion - so about a 0.16" smaller wound channel (though considering the x-terminator round travelled through 21" of gel, it seems relevant to ask WHERE the bulk of expansion happened).
Does that strike you as "blowing away" the best .22WMR rounds or as a noticeably more powerful round in terms of effect on target?