Hi, thanks for the replies.  The original 30 -40 grain was specified at 40,000 PSI pushing a 220 grain bullet, at about 2000 FPS leaving the barrel.  The current Remington Ammo I have uses a 180 grain bullet which is lighter, and claims 2430 FPS leaving the barrel.  I would like to find some "lite" loads like the limited recoil 30-30 rounds I use in my 03 Winchester.  It's probably safe anyway, but I would like this rifle to last a long time, so my grandson can enjoy it when I'm gone.  The limitd recoil loads for the 30-30 allows me to shoot that gun with less shoulder abuse!!  The single lug design on the Krag bolt gives me some concern, I love that bolt action but that lug is very small!!