JustAGuy2020
Member
- Joined
- Nov 6, 2011
- Messages
- 8
Ok, so I finally got out to do some shooting and data collecting on my new AR-15 varmint rifle. Rifle is a Wilde chambered 24 inch Wilson stainless bull barrel.
My question is: given this caliber and this barrel, what is considered good, average and poor Standard deviation and extreme spreads on the velocities? I shot some Federal white box XM 193 and some 40 gr V-max over 8208 XBR in two different loadings, 0.6 gr apart.
XM 193 SD: 1.86 FPS, ES: 5.91 FPS, Average velocity: 3619 FPS.
Lower 8208 load SD: 4.87 FPS, ES: 15.09 FPS, Average velocity: 3624 FPS.
Higher 8208 load SD: 3.74 FPS, ES: 11.81 FPS, Average velocity: 3636 FPS
These look pretty good to me especially considering the handloads were NOT trickled but taken straight from the powder thrower.
Thoughts?
My question is: given this caliber and this barrel, what is considered good, average and poor Standard deviation and extreme spreads on the velocities? I shot some Federal white box XM 193 and some 40 gr V-max over 8208 XBR in two different loadings, 0.6 gr apart.
XM 193 SD: 1.86 FPS, ES: 5.91 FPS, Average velocity: 3619 FPS.
Lower 8208 load SD: 4.87 FPS, ES: 15.09 FPS, Average velocity: 3624 FPS.
Higher 8208 load SD: 3.74 FPS, ES: 11.81 FPS, Average velocity: 3636 FPS
These look pretty good to me especially considering the handloads were NOT trickled but taken straight from the powder thrower.
Thoughts?