Siringo wrote:Randy -- I have loaded 325 FXT's, heavy cast bullets and 400 grain speers and 405 grain Remingtons.
There should be posts on the 325 tests. I can't speculate on the charges of powder that I used (it was LG though), but my velocity was 1800 fps. Same as shooting this same bullet in Hornady's factory load out of an 18 inch 45-70.
Cast bullet performance was so-so. Problem is the short gas check. They need checks at least .10 to .125 inches tall.
The 400's presented some additional problems. First, since the velocity is slower than the factory bullets (which the system is balanced for) I was getting rim tearing/bending. I switched to a tubbs heavy buffer system and used an H3 (5.0 oz) buffer and this seemed to alleviate the problem My velocities were in the 1500 fps range. Accuracy was 1 1/2 inches to 2 inches. Note that they twist in the 450 is marginal for long heavy bullets. Typical 45-70 twists are 1-22. The 450 is 1-24. Match 45-70's are generally 1-18.
The 350's you listed are for 1800 fps or faster (according to Hornady). They may not expand reliably at the 450 velocities, which I would estimate at 1600 to 1700 fps.
If your looking for a good short range heavy bullet --- try the Remington -- if you can find them. They are designed to 45-70 trapdoor velocities and should blow a good hole thru a deer. They also size much easier. The Speers and Hornadys are tough and you will need a very strong press!!!I am going to play around with the 400's this winter --- trying VV120 powder. LG may be too fast for such a heavy bullet.
ALSO --- CHECK THE KNOWLEDGE BASE ON THIS SITE. THERE ARE LOADS LISTED FOR THE 400'S.
Siringo...thanks for the info........I'm not too interested in expansion, heck I've already got a 45 caliber bullet.
I was think more about penetration, thus the hard cast 395gr gas check bullet or the 350gr. jacketed round nose.....something for large hogs, black bear, maybe even moose.
I'm also thinking LG is too fast for these loads.........any other powder suggestions?