Went with a couple ball powders to make most use of 308 case volume.
Just did one round of each load for velocity/pressure indications.
I'm going to load up some of the 51/52 gr 2230C for an accuracy check. Curious how they will do jumping .150" to the lands. Only one way to find out.
308 Winchester Loads, 22" factory bbl
Win brass
130 TTSX, moly'd
50gr W748 2917 fps
51gr W748 2967 fps
52gr W748 2992 fps
50gr 2230C 3019 fps
51gr 2230C 3079 fps
52gr 2230C 3113 fps
53gr 2230C 3207 fps
QL calc's for 2230C. I factored up the case volume from 58.0gr to 59.0gr to account for the freebore. Calcs and velocity are fairly close. 53gr at 3200+ looks nice, and the brass or bolt lift didn't show any issues, but at 67K calc'd pressure, it seems prudent to back off to 51-52 grains.
Powder indicates AA2460, as indicated by AA, as 2230C is not a standard powder.
Cartridge : .308 Win.
(59.0 gr volume,factory Remington chamber/throat)
Bullet : .308, 130, Barnes 'TSX'BT 30838, Friction Proofed
Cartridge O.A.L. L6: 2.800 inch or 71.12 mm
Barrel Length : 22.0 inch or 558.8 mm
Powder : Accurate No.2460
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-02.0 96 50.00 3015 2623 55591 8599 98.7 1.013
+00.0 98 51.00 3074 2727 59440 8705 99.2 0.984
+02.0 100 52.00 3133 2833 63575 8797 99.5 0.955
+03.9 102 53.00 3191 2940 68023 8875 99.8 0.927
+05.9 104 54.00 3249 3048 72814 8936 99.9 0.901
+07.8 105 55.00 3307 3157 77983 8982 100.0 0.875
+09.8 107 56.00 3365 3268 83568 9014 100.0 0.850