MtJerry
In Pat Wolfs Book of loading for the Springfield Trapdoor Rifle there is a section devoted to what is called Gallery Loads. These were common place back when our US Troops were fighting on the Indian Frontier. Regular ammo was not used for target practice as recorded in much data to be found. You can find the link on my web site:
http://the_montanan.tripod.comSo the round ball was used for target practice in these Gallery Loads. You can get nice groups with the round ball at a reasonable distance. I have used these to take deer with.
I used the following with a Springfield Trapdoor that I had and took a nice buck with it. The round ball passed completely though and there was no recovery of the round ball.
Here is my loading for a Gallery Load:
45-70 Rem case or Starline
Fed 215 or 210 primer
FFg Goex using from 30-gr to 50-gr compressed
Card wad down over FFg
Lube or grease cookie from either SPG or my own Buffalo Gold lube
.45 cal round ball then seated on top of grease cookie or BP lube
Then add a bit of lube to cover top of round ball.
Here is a site for creating a Gallery Load using sabots either with round ball or pistol bullets:
http://willowlake.business.directnic.com/45-70_fun.htmNow, I also agree with Paul5388 about using the 405-gr as discribed... there is plenty of knockdown and accuracy when loaded as he has posted.
I hope this helps