Randy Garrett's loaded ammo is very low PSI
I have only used the 500 Grain solids he sells as loaded ammo ( Speer Bullet's)
There a fair round nothing to write home about.

There is far better factory loaded rounds to be had from Grizzly then Garrett even Buffalo Bore makes better loaded rounds

http://www.grizzlycartridge.com/Search.bok?category=45-70

Hope its ok to post up that link ..But it does make the point... there are 4 other companys that make and sell
loaded ammo in 45/70 that are far better then Mr Garrett's

If you do own a 45/70 and would like to have ammo custom loaded Mike at Grizzly will make you up what you like
and ship it to you in a factory sealed box
Its a good deal if you make your own bullet's and dont want to go through the trouble of reloading for it .
Mike will load 45/70 rounds up to around 43.000 PSI
For your --- New model lever actions in 45/70
and higher for your single shot New model rugers and other high PSI rated action..

Anyway i bet this post gets me beat up

let the punching start