I picked two martini, one in a swiss41 long rifle and a martini-enfield action.  it's a mark 1 #3.  On the action...it says khartom 1909, it's case hardened.  what kind of pressure can this action take?  I have been looking at these cartrdges for the action 50/90 sharps,50/70 govt,45 2.75
45/70,40/50SS,40/50 bn,35 win.30/40 krag,25/35 win

"Kartom 1909" sounds a bit odd for a Martini Enfield.  A few pics might be of help to identify that one, esp. since there are poorly made copies out there  that are generally referred to as "Khyber Pass Martinis" made by tribesmen in the hills of Pakistan/Afghanistan. Those home made rifles may not even be safe to shoot...  many were imported and sold as decorator items but the warning got lost after they changed hands a few times. 

Here is a link to a discussion of these fakes, unfortunately many of the pics are now gone from this old post:
(You need to Login or Register to view media files and links)

got pict but can put them on her  email me and tell what I got