I recall someone ran a program that estimated the pressure of the killer load in thread "blown up real good".

Can someone estimate this load(Better if there's more than one estimation from different programs/manuals) :

7.62X54Rimmed Russian
125 grain Speer FMJ bullet, .311" dia.
49.0 grain H335

If this has not reached/exceed maximum, what is the max charge for the very same setup(I seated the bullet less than .300" deep)?

I used the maximum load for .303 British but I know the Russian round do have more capacity than the .303

Thanks for help
Pyro

Pyro, QuickLoad says that 49 grs H335 are no problem:
81.6 % load density, 42886 psi, 3015 fps, 2524 ftlbs.
With 53.6 grs and 89.2 % load density, 56292 psi, 3271 fps, 2971 ftlbs you should stop, says QuickLoad (26" barrel).

What I see is that you need 9.4 % more powder to increase speed by 6.8 % and you'll have a heavier kick on your shoulder.

Thanks, waitaminit!