IMR 7383 and 338 win mag

[Grumpyoldguy]

Hey guys.. any one have experience with IMR 7383. Its a military surplus powder. I have been using it in alot of different calibers with good results. 4064 is supposed to be close in burn rate.... anyway. I am getting close to max charge in my 338 win mag. Max charge of IMR 4064 for 250 grain sierra bullet is 60.3 at 2700 fps.. My bullet is 230 gr eld x .. I am at 59.9 grains so far working up from 57.5.. no pressure issues so far... however.... my chrono is only telling me 2300 even 2200 range for speed.

[Grumpyoldguy]

Ireally dont trust chrono graphs. but usually the chrony is within 100 fps at least. Loads are already compressed pretty good.

[Grumpyoldguy]

Think i will load up some other stuff like 4350 and see what chrono tells me.... Maybe keep going up with the 7383... also. in small increments. but dont know if i will get to 2700 . thats where i need to be. for speed. Can also use 4831 reduced by 15 percent to start for the 7383.. Data