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375 CT & wc 860

Re: 375 CT & wc 860

The old 5010 was much slower than the 860, but the new 5010 is about 10% hotter so you NEED to work loads up with 5010 or SEVERE pressure problems WILL happen.
Just curious but why are you not using Retumbo or RL25?
 
Re: 375 CT & wc 860

I am using retumbo and RL25 / I have a quantity of surplus powders and like any other maniac wildcatter want to look at different propellants with the hope of getting More Something out of a rifle.
I have accumulated a variety of .375 projectiles in min quantities of 100 @ The more I can benefit from others experience the more performance I can gain......The rifle is still in break in, but as weather warms up I will be out with the chrono every day..
 
Re: 375 CT & wc 860

Looking only at getting 100% fill this is what is coming up
Vihtavuori N570 100.0 160.0 10.37 3244 92.5 54955 19467 1.107 ! Near Maximum !
Alliant Reloder-25 97.3 146.8 9.51 3234 100.0 55840 17324 1.091 ! Near Maximum !
Ramshot Magnum (Big Boy) 94.5 153.6 9.95 3227 97.6 55840 17962 1.091 ! Near Maximum !
IMR 7828 96.1 141.8 9.19 3227 97.1 55840 17678 1.078 ! Near Maximum !
IMR 7828 SSC 90.9 141.8 9.19 3227 97.1 55840 17678 1.078 ! Near Maximum !
PB Clermont PCL 517 94.9 153.7 9.96 3226 97.6 55840 17947 1.091 ! Near Maximum !
Norma MRP 90.0 142.6 9.24 3226 99.1 55840 17793 1.100 ! Near Maximum !
Vihtavuori N560 91.8 142.3 9.22 3225 96.5 55840 18050 1.090 ! Near Maximum !