Re: Seating Depth 45-70
A length putting the bullet hard into the leade, on the closing of the action, will usually give max accuracy; makes the rifle difficult to unload, sometimes, as extraction may pull the bullet from the case.
The Ruger has a bit of camming action, the Sharps, none, so be sure you can manually chamber the round with your thumb, of finger, at this length.
If you choose this approach, back off a bit on near max loads, as the loss of 'jump' into the throat, will raise pressure, markedly!
Don't start no s**t and there won't be none, Terry