Marakkai et al,

The shotgun is a prewar German 12 ga. Sauer at http://www.thadscott.com/ I don't have it in hand yet, but if it measures up, I will convert it to a 577 light nitro.

1) Can one use the 3" instead of the 2 3/4"?
2) Do you cut down you 3" to make 2 3/4"?
3) Can one use a standard press (I have a lee classic)?
4) What load will keep it at or below 10 tons with a 650gr bullet?
5) If I bought the cases, powder and bullets, could someone load me up 40 for the gunmaker to use for the conversion?