thebrassnuckles wrote:Why is it that most of you gentlemen are placing the crimp where it is as opposed to the location a crimp is put on 45ACP?
thebrassnuckles-
The real answer to your question is a long one, which you can piece together reading the early threads on this reloading forum, and on the calguns thread.
A short and incomplete answer is that with some loads a heavier crimp (greater bullet pull) is needed than can be obtained with a taper crimp. The limit to which a taper crimp may be applied is based on the minimum case mouth diameter. If you apply too much taper crimp, the mouth diameter can become so small that upon chambering, the case can move forward of where it should stop. Bad things can happen then.
There are not too many options for increasing bullet pull in a taper-crimped case. The side crimp applied with a collet is about the easiest option. Side stabbing has been used in some military ammo in the past. Applying a bonding agent between the bullet and the interior of the case mouth might be possible, but it's difficult to be consistent with that technique.
I haven't followed the side-crimp techniques used by all of the other posters on this board. However, in my own work, I apply the taper crimp just as I would with the 45 ACP, and then apply the side crimp. The cartridge is then crimped in two places.
--Bob