10mm load question
Quote from Reloader on May 4, 2016, 4:41 amI made a small batch of 10mm shells that resulted in a low velocity projectile with a fairly hefty recoil. I used a 180 gr. Hornaday HAP bullet, 9.5 gr. Hi-Skor 800-X, CCI 300 LPP. The powder filled a lot of space in the shell casing and I'm sure it was compressed with the bullet seated. When fired my chronograph was registering an average of 450 fps, much lower than I expected. I was shooting a Glock 20 gen IV with a stock 17lb spring, only mod is a Storm Lake barrel.
I'm guessing the powder ignited slowly and pushed the bullet out at low velocity and then continued to burn, possibly at an accelerated rate, after the bullet left the barrel; as mentioned I was getting a good kick. Any thoughts?
I made a small batch of 10mm shells that resulted in a low velocity projectile with a fairly hefty recoil. I used a 180 gr. Hornaday HAP bullet, 9.5 gr. Hi-Skor 800-X, CCI 300 LPP. The powder filled a lot of space in the shell casing and I'm sure it was compressed with the bullet seated. When fired my chronograph was registering an average of 450 fps, much lower than I expected. I was shooting a Glock 20 gen IV with a stock 17lb spring, only mod is a Storm Lake barrel.
I'm guessing the powder ignited slowly and pushed the bullet out at low velocity and then continued to burn, possibly at an accelerated rate, after the bullet left the barrel; as mentioned I was getting a good kick. Any thoughts?
Quote from Reloader on May 6, 2016, 11:36 amThat much powder, that much recoil -- my first thought is the chrono is not giving accurate speed reports.
That much powder, that much recoil -- my first thought is the chrono is not giving accurate speed reports.