So my theory was wrong?
I believe the 45ACP seating die worked because it's larger to accomodate the large flares that can be put on a .45 ACP case before starting to seatbullets -quite a bit larger than .455. It's been several years since I last reloaded the caliber so I don't remember if there was anything unusual about the seating or crimping process..
So my theory was wrong?
OK Guys-I need some help. I've finally gotten around to loading some .455s and I can't find data for anything but the 0.760 inch case.
I have a bunch of 265gr. hollow base lead bullets and the majority (the ones I plan to load) of my cases are 0.887 inches, +/- a thou.(MK1 case?)
I have a decent selection of powders, so fire away.
Thanks in advance.![]()
In my experience, I used .45 ACP dies as there were no Lee dies available at the time. They work fine, although the brass is worked a bit more than with proper .455 dies. But, you can get started loading. Not a theory, actual experience.
There isn't that much difference, the original Mk1 cases IIRC were for BP,
Mk2 was for cordite smokeless.
My #43 Lyman manual says use 4gr Bullseye with 260 gr lead for 700FPS, and 6gr Unique for 710FPS, YMMV. KD