CompBullets Ventilated Bullets?

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I believe they would be considered an "armor piercing" handgun bullet, since they are solid copper and non-expanding, and therefore not importable into the U.S. I may be mistaken, but that was the last understanding I had of the Federal regulations.

Hope this helps.

Fred
 
Oh my ... go read the commentary in the link! They capture most of my immediate thoughts on the matter.

About the most devastating "anti-advertisement" I've read!

I love how the big hole in the bottom is supposed to produce a "jet-effect"...because you're blowing high pressure gas, wait... INTO the hole? Just a confused mess.
 
A solid pure copper handgun bullet is legal, unlike brass, bronze, iron, steel, berylium copper, tungsten, or uranium. I agree that it might still get hung up on importation.

I read the extravagant claims of the maker in Italy a while back. Sounded kind of hokey to me. They are depending on gas flow through the bullet and out the side holes to act like an expansion chamber compensator. Riiight.

But the linked site has got some really weird objections on function and safety.
"With a CompBullet projectile, there is the potential for powder to shift from the cartridge case into the bullet’s central cavity, prior to ignition. If this occurs, and the kernels inside the bullet do not fire off prior to the bullet leaving the barrel, there is the possibility of an explosive fragmentation of the bullet once it leaves the muzzle."

Wow, I've shot a lot of hollowbase wadcutters and am now trying out the hollowbase Berry's 185 gr .45 PRN and never had "explosive fragmentation of the bullet once it leaves the muzzle." What am I doing wrong?
 
That's about the silliest thing I've ever seen. Now if it whistled through the air like a Samurai signal arrow, that'd be kinda neat, especially through a suppressed rig, perhaps.
 
Supersonic air flow is nothing like subsonic air flow.

Air does not flow over Mach waves.
They are standing pressure waves.

Even the Bernoulli equation fails.
 
Wow, I've shot a lot of hollowbase wadcutters and am now trying out the hollowbase Berry's 185 gr .45 PRN and never had "explosive fragmentation of the bullet once it leaves the muzzle." What am I doing wrong?
Click to expand...

Add more powder to fill the cavity.





Sorry, just had to say it.
 
If it emits a loud whistle when it goes subsonic I want some. Might be good for getting the hogs to run back to me when fired over their heads.
 
Add more powder to fill the cavity.

Sorry, just had to say it.
Click to expand...

I think it was the French GTV that had a hollowbased copper bullet with powder filling the case and up into the hollow. Pressures were above SAAMI or CIP, maybe 50,000. The French just said "It is only for a few microseconds, how can that be a problem?"
 
Jim Watson said:
Pressures were above SAAMI or CIP, maybe 50,000. The French just said "It is only for a few microseconds, how can that be a problem?"
Click to expand...
:eek::eek::eek:


As to OP's bullet, due to very deep cavity inside the bullet, during cycling of the pistol, powder inside the case will be shaken forward into the cavity. My concern is that different amount of powder may ignite inside the cavity during subsequent firing and may affect how the chamber pressure is developed with leakage of high pressure gas through the grooves of rifling not to mention the potential for inconsistent "jetting" of the high pressure gas through the holes causing "wobble" of the bullet as the bullet exits the muzzle. This is contrary to bullet makers' objective of capturing the chamber pressure to build more consistent pressure curve that results in more consistent muzzle velocities and accuracy. Also, the link indicates probable decrease in muzzle velocity due to the design of the bullet (that just seems like waste of powder).

And if you use slower burning powder with short barrel pistol, would that result in powder burning outside the barrel with flash flaming through the holes in the bullet body? Depending on how much powder is shaken into the cavity, that's got to have an impact on the chamber pressure curve and may vary the muzzle velocity and ultimately influence accuracy. My guess is that the Comp bullet will produce shot groups larger than conventional lead base FMJ or hollow base bullets (designed to expand the bullet base for better seal with the barrel - and unfortunately the solid brass bullet base won't expand like lead core hollow base bullets ;)).

In comparison, lead base FMJ and hollow base of Berry's bullets filled with powder will help expand the base of the bullet faster to seal with the barrel to produce more consistent chamber pressure, thus enhancing the consistency of muzzle velocity and accuracy.

Here's a comparison picture of Berry's 124 gr solid base and 115/124 gr HB bullets along with Winchester 115 gr FMJ
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