9mm energy
 

I just noticed Double Tap has a 115gr 9mm with 511 foot pounds of energy.. Can this be true? Has anyone run these through a chronograph?

Caliber : 9mm+P

Bullet : Remington ® JHP

Ballistics : 115gr @ 1415fps / 511ft. lbs. from a G17.
Glock 19 velocity - 1395fps.

Double tap makes great ammo but tend to exaggerate.

I found this post in another forum about Real World info about new fast 9mm loads with bullets that expand over .60" from police and SD forums..

"Ask anyone who has shot someone with a 9mm 115 gr. HP traveling 1300 fps or faster. There are several thousand Border Patrol officers, Feds & LEO who swear the old Fed. BPLE 9mm was a virtual death ray. The BP only went to the .40 as a managerial decision which was stupid (as are most Federal decisions). Many almost cried as they loved the BPLE round so much."

and

"A former Captain of the IL State Police has written on many websites that during his tenure there they started using first the Fed. BPLE & later the Win. 9mm 115 gr. +p+ and that he NEVER saw a case where if failed to stop someone with a COM hit in hundreds of shootings. Now why do you think that was? The cops in IL are better shooters?"

Thanks zenfly for the info. :rock:

Very interesting. I have a few 9mm +p+ rounds for a not formentioned carbine. Have not measered it yet but my guess its close to 1900 fps based on the 16" barrel.

Dave I know its not what you like, but what are your comments on this.

I'd be absolutely shocked it if gave any more than 1500 fps from a 16" barrel....just not enough powder in the little case to get much of an improvement. My Sierra manual shows a max of 1350-1400 fps with a 16 1/2 " carbine. A +P+ round would likely do a little better, but that would depend on the burn rate of the powder. A .357 Mag filled with H110 on the other hand should do 1900 fps.

Sorry for the not so great news.

Grizz

I was only talking about hand gun ballistics.. I really never had an interest in 9mm 16" rifles.. I guess the +P+ ammo was designed for rifles right? Anyway I was looking at a bunch of slow motion Gel tests on all kinds of ammo on youtube and you can really see the difference in shock from .380 to 9mm to 357 to 44 -223-30/06 all the way to .50bmg... some of the new 9mm is quite respectable.. look for the slow motion ones

Heres the 45acp hard ball I think
http://www.youtube.com/watch?v=RLPjTlj1pHk

and 45acp SD
http://www.youtube.com/watch?v=OwAbI...eature=related

357mag
http://www.youtube.com/watch?v=Q7w4M...eature=related

and 9mm
http://www.youtube.com/watch?v=92j3g...eature=related

OK,

http://i1002.photobucket.com/albums/...233/10mm-1.jpg

This is why I shoot pigs with my 10mm.. that sucker looks like it had a bomb in it..

Sheepdogs' wet-dream aside, most Semi-auto rounds do poorly in long barrels. Example; WWB FMJ,230grain. In my rock it does 835fps ave.velocity, in a friends' Thompson Semi-auto SMG with a 16-1/2" barrel it does 785fps. Same would happen with a 9mm of any type. 9mm is designed to give max velocity in a 4" barreled gun so, that means a fast-burning powder. Now, if all that powder burns in say, the first five-inches of the Thompsons'Barrel, it has to overcome the friction of the next eleven-inches of barrel as the gas-pressure drops off rapidly. Result? Naturally, the bullet slows down inside the barrel. Actually, you would lose more velocity in the barrel with the 9mm because it has half the mass so, it will lose momentum faster.

Okay, they drive a 115grain bullet at 357magnum velocities and get what? .60caliber? That's considered good? Most of the better 230grain 45ACP SD loads will expand to past .70caliber at 850 or so fps. Remember now, that's twice the 115s weight. And they will still completely penetrate a torso.

Guys, instead of trying to find the Velocity-King, you should be concentrating way more on Shot-Placement. A good hit with a 38Spl. beats a poor hit with a 44magnum.