Backward calculations

[Lucky6547]

Hello,
I’m sure there’s a way to do it, but I haven’t been able to figure it out, is there a way to calculate muzzle velocity from my 600 yard speed? Haven’t shot in a while and the first time back the club I shoot with has new electronic targets, so I shot a 199-6x with my 6mmBR, not really holding for the wind at all (I’ll work on that again, but after so long away, I figured I’d just see how it goes). Anyway, the target told me my average velocity was 1966fps 11.7sd.
Thanks,
Ken

 

[Lucky6547]

Oh, 6mmBR
105gr Berger vlds
RL-15 30.3gr

 

[Doug Beach]

Using a ballistics program, enter your environmental variables, and play with the muzzle velocity until you get the correct 600 yard velocity.

 

[creedfan]

some where in the 2870fps range is my best guess

 

[squint-n-squeeze]

Hello,
I’m sure there’s a way to do it, but I haven’t been able to figure it out, is there a way to calculate muzzle velocity from my 600 yard speed? Haven’t shot in a while and the first time back the club I shoot with has new electronic targets, so I shot a 199-6x with my 6mmBR, not really holding for the wind at all (I’ll work on that again, but after so long away, I figured I’d just see how it goes). Anyway, the target told me my average velocity was 1966fps 11.7sd.
Thanks,
Ken

Cool! I didn't know they could tell you that information. Do you know what kind of electronic targets your club uses?

 

[Lucky6547]

Cool! I didn't know they could tell you that information. Do you know what kind of electronic targets your club uses?

The program is called “shot marker”, don’t know the exact brand.

 

[Lucky6547]

some where in the 2870fps range is my best guess

Took several inputs...jbm says about 2885fps

 

[Oleg S]

+/- 15 FPS

Took several inputs...jbm says about 2885fps