Unverified load 7800 in caliber .38-40 Winchester

LoadID 7800
Bullet Magma .403 cast
Bullet Weight 180 grs
Powder Accurate-5744
Powder Weight 17.0 grs
Primer CCI-350 MAG
Brass Make Star-Line
Barrel Length 24 (inches)
C.O.L 1.582 (inches)
Velocity 1295 fps
Group 100 yds 2.75 inch at 50 yards (inches)
Submitted By Float Pilot
Gun Info Original 1892 Winchester mader in 1892.
Comment Tried with both CCI-300 and CCI-350. The magnum primer did much better on the velocity spread, but the group was the same size for each. This old gun has a very pitted bore.