I’m basically trying to replicate a +P 45ACP for my wheelguns. I’m old, live a quiet life and just like my wheelguns.
So I chronographed some loads today.
3" Model 629-6
51 Degrees
20ft to Chrono
9.5grs of W231 w/ 180gr XTP
Average of 10 Shots 996fps
ES 48 fps
SD 15fps
10grs of W231 w/ 180gr XTP
Average of 10 shots 1074 fps
ES 90fps
SD 27fps
10.5grs of W231 w/180gr XTP
Average of 10 shots 1079fps
ES 42fps
SD 14fps
I shot through the chronograph into a target at 15yards, with 3 different powder charges they all went into one large hole about 2-2 1/2".
Shot another 38 rounds at a 25 yards target. Recoil is not bad, you know you are touching off something. My 3" Ahrend's combat grips on it. No fireball, all cases ejected smoothly. All ammo loaded at the same time, same machine, new brass, Remington 2 1/2 primers. etc.
Someone please help me with the ES/SD.
The 10.0 / 10.5 loads are really close but in the 10.5gr load the spreads are narrower. Does that make it a better load? Does it mean that in this situation, the powder has reached its "useable" loading?
Max load is 12.0grs w W231. Do you think there would be any advantage to adding a 1/4-1/2 gr more powder.
Next will be to test expansion, but it will be a few days, cold weather coming.
So I chronographed some loads today.
3" Model 629-6
51 Degrees
20ft to Chrono
9.5grs of W231 w/ 180gr XTP
Average of 10 Shots 996fps
ES 48 fps
SD 15fps
10grs of W231 w/ 180gr XTP
Average of 10 shots 1074 fps
ES 90fps
SD 27fps
10.5grs of W231 w/180gr XTP
Average of 10 shots 1079fps
ES 42fps
SD 14fps
I shot through the chronograph into a target at 15yards, with 3 different powder charges they all went into one large hole about 2-2 1/2".
Shot another 38 rounds at a 25 yards target. Recoil is not bad, you know you are touching off something. My 3" Ahrend's combat grips on it. No fireball, all cases ejected smoothly. All ammo loaded at the same time, same machine, new brass, Remington 2 1/2 primers. etc.
Someone please help me with the ES/SD.
The 10.0 / 10.5 loads are really close but in the 10.5gr load the spreads are narrower. Does that make it a better load? Does it mean that in this situation, the powder has reached its "useable" loading?
Max load is 12.0grs w W231. Do you think there would be any advantage to adding a 1/4-1/2 gr more powder.
Next will be to test expansion, but it will be a few days, cold weather coming.