10-14-2012, 03:40 AM
Join Date: Mar 2004
Great info. Going to try both the 45/70 and .458wm loads soon...
Originally Posted by Greenhorn Dave
Has anyone tried this or is willing to try these loads?
I have gotten the bug to get a Ruger No1 that makes a big hole in things, but I am no fan of recoil or retina detachment. I am beginning to get brittle -- nowhere near as elastic as I was in my 20s, 30s, 40s, 50s, etc.
I thought "45-70" lightly loaded might be good.
Then, for some reason I thought 458 Win Mag. might be OK too.
I have been shooting Hodgdon's cowboy shoot powder, Trail Boss, for about a year in my 44 mag with 250 grain lead bullets and enjoying it very much. Big noise, mild recoil, big hole, and pretty accurate and consistent. And it is impossible to load a double shot of powder.
So I thought, "I wonder if?"
On the Hodgdon data charts online they have loads for both the 45-70 and 458 using Trail Boss under a 405 grain lead bullet -- probably a good choice bullet.
Now, here is the revelation: according to Hodgdon, here is what Trail Boss and a 405 gr lead will do:
Trapdoor load for 45-70 Starting load of 12 gr TB yields 971 fps and 24,500 CUP
Max load of 13 gr TB yields 1007 fps and 25,600 CUP
Here's the Hodgdon 458 Win Mag Trail Boss load with a 405 grain lead bullet:
Starting load of 18 gr TB yields 1040 fps and only 14,500 CUP!!
Max load of 21 gr TB yields 1082 fps and only 17,000 CUP!!!
I have no idea why the 458 with more powder and speed would have a lot less CUP than the 45-70, but it sounds like the 458 Win Mag with the above loads would be a shoulder friendly fun shooter.
"There is no hunting like the hunting of man. And those who have hunted armed men & liked it , care for nothing else there after" Hemingway