If it was me, besides reading the forum here, I would go to the following and spend a couple weeks
reading
http://www.shilohrifle.com/forums/http://www.bpcr.net/index-a.htmhttp://www.longrangebpcr.com/if you are going to shoot smokeless, there is plenty of info in the reloading manuals for the 45-70. The
larger 45's have such a big case, that shooting smokeless is inadvisable.
for blackpowder:
you will find that what works for my rifles, won't necessarily work for your rifle(s). also you will need to
determine whether you will be shooting plain old Goex, (about 13.00 per lb when bought in 25 lb cases)
Goex Express, Swiss, 17.00 + per lb, etc.
Different powders require different loading techniques, such as compression amount, etc.
I shoot Goex because I am buy 25 lb cases, and can't afford 1000.00 a year for powder to shoot swiss,
You don't necessarily need "magnum" primers. That is a myth that has persisted since smokeless came
into use.
A lot of the competitive shooters are actually using large pistol primers with thick wads under them,
or standard primers with under powder wads to cut down on the briesence (spelling ?)
I use "match" primers. Fed 210M (the M designates match, not magnum) or CCI BR-2's (Benchrest
quality primers).