Anyone care to quickload some data?

[243DH]

Trying to figure best powder and approximate velocity of new undelivered barrel. 20" 22-250 9twist, I plan to use it most of the time suppressed. I am looking at 50 & 53 gr vmax and 69smk, 0 to 400 yds on yotes with vmax and steel at longer range with 69smk. Ive got the 69smk on hand, 75-77 might be possible, but main use will be yote whacking. I have a bunch of h4895, tac, and h4350. I believe the 4350 will be too slow for 20" barrel, even with heavy bullets. I am looking for as close to 100% burn, as I don't want 50% to burn in the can. Thanks for any assistance.

 

[savagedasher]

None of the powder you have listed give better then 97% burn in the barrel. H4895 is the only one close.
Larry

 

[243DH]

Thanks Larry, I assume the 97% was with the lighter bullets? Would u care to mention charge weight, velocity, and pressure at safe max? I will start at 10% below that and watch for pressure signs.
The 97% will be just fine, or close enough. Sometimes it will be used at night with gen3 clip on and no can, so the more complete burn the better. Thanks again sir.

 

[savagedasher]

34 Gr should be a safe place to start. But don't take the numbers I have given to load with. Hodgdon has listing. Larry