Folks, I have been using these for some time now, and I have to point out that these bullets were designed for RIFLE VELOCITIES, hence the groundbreaking soft polymer tip, something specifically created to allow spitzer bullets -- with their much better ballistic coefficients -- to be safely loaded into tubular magazine (mainly lever action) rifles for the first time.
I load these all the way to the levels recommended safe only in the Ruger Blackhawk/Colt Anaconda/Dan Wesson/Ruger Redhawk/Thompson Contender .45 Colt guns.
The bullets hold together just fine and in fact show good accuracy from my 7.5" barreled Blackhawk.
I currently am going to hunt deer with them using the same loads in my new Marlin 1894 in .45 Colt, and my Chrony indicates they are moving along at a warm 1560fps from its 20" barrel.
My load consists of 25 grains of W296, fired by a Federal large pistol magnum primer from Starline brass.
From my Marlin, I was able to put the entire magazine of ten rounds into a single ragged hole @ 50 yards.
Keep in mind here that these loads are EXTREMELY DANGEROUS in Colt SAA, any of the various clones (Uberti, etc.), the Colt New Service, S&W 25, and any other .45 Colt not mentioned above that can withstand these "+P" level loads.
In other words, if your .45 Colt gun is not expressly listed as safe for firing Corbon's +P or Buffalo Bore or Double Tap, do NOT fire them in your gun.
Oh, and the bullets hang together just fine at the well over 1500 fps I am getting out of my Marlin.
Remember, these were designed for RIFLES, so all the hyper-cautiousness about kicking them up in the .460VXR is ridiculous.