Muzzle velocity

Anyone have any tips or ever figured out muzzle velocity of a 22 lr without having access to chronograph. Trying to prep for prs match in coming weeks.

I'm sure someone local would be willing to meet up and let you use their chronograph. It would help to know where you're at...

Rookie said:

I'm sure someone local would be willing to meet up and let you use their chronograph. It would help to know where you're at...

Click to expand...

^What he said.

Determining velocity without the use of a chronograph sounds like a tall order. I guess if you knew all the other variables (height of scope over bore, etc) you could hypothetically shoot at several different distances, and then do some complicated math to determine velocity, but at that point I would imagine you may as well determine your dope using trial and error at the various distances you expect to shoot at, and not even bother with calculating velocity.

The only other tip I would have to offer is that, especially if you're shooting out of a bolt action, you can typically tell the difference in sound between a supersonic and subsonic round, due to the supersonic "crack." That can at least tell you if your ammo is above or below the speed of sound, and with some brands of ammo I've actually noticed that some shots will have the supersonic crack, and some won't, which tells me that the average velocity is pretty close to the speed of sound, since some are falling just below and some just above that speed. Doesn't really give you a precise enough idea to get good ballistics calculations, though.

If you shoot a couple distances to figure out your drop, assume BC, you can guess a decent ballpark but at that point, you already have drop data and don't need MV to calculate it.