I've been working on a new pet load for my original Winchester Model 1876. I figured 25 grains of 5744 under the 322 grain cast GC bullet I've been using should give me somewhere in the neighbourhood of 1,325 fps. I loaded up seven rounds, five to see how they shoot over the chronograph and two to shoot offhand at 100 yards. Here's a photo of the five for the chronograph ....
I got the brass from Rocky Mountain Cartridge in Cody, WY. Folks can also get nice 45-60 brass from http://www.marstar.ca/ammo-etc/new-brass.shtm
Here's a photo of my old '76 ....
The first thing I did at the range was to take my two offhand shots at 100 yards. I have the rest of the summer to practice for hunting season, but here's the target anyway ....
I then set up another target at 100 yards, aligned my chronograph, and took five shots. The 25 grains of 5744 gave an average velocity of 1,332 fps with an extreme spread of only 17 fps. That is nice burning consistency. I'm a little rusty, so the group was a bit looser than the gun is capable of, but here's the target anyway ....
This is going to be my pet load for my '76. The Rocky Mountain Cartridges have a little less case volume than Chaparrel brass, so the same load may give a lower velocity in the latter. I'm taking this deer hunting this fall. Now to practice all summer and early fall with this so I can get real good with it. I'll be practicing out to 200 yards.

I got the brass from Rocky Mountain Cartridge in Cody, WY. Folks can also get nice 45-60 brass from http://www.marstar.ca/ammo-etc/new-brass.shtm
Here's a photo of my old '76 ....

The first thing I did at the range was to take my two offhand shots at 100 yards. I have the rest of the summer to practice for hunting season, but here's the target anyway ....

I then set up another target at 100 yards, aligned my chronograph, and took five shots. The 25 grains of 5744 gave an average velocity of 1,332 fps with an extreme spread of only 17 fps. That is nice burning consistency. I'm a little rusty, so the group was a bit looser than the gun is capable of, but here's the target anyway ....

This is going to be my pet load for my '76. The Rocky Mountain Cartridges have a little less case volume than Chaparrel brass, so the same load may give a lower velocity in the latter. I'm taking this deer hunting this fall. Now to practice all summer and early fall with this so I can get real good with it. I'll be practicing out to 200 yards.