You can figure the muzzle velocity "close enough for government work" from the reloading tables, if you don't have a chronograph.
"close enough for Government work" is a pretty elastic standard, depending upon the particular Agency or Dept. (and individual: Paging Lon Horiuchi....) in question......
If you want to hit your target the first time, you really need to know your load's muzzle velocity out of your rifle, and it's BC..... and exact range to target.
Anybody with a spotter and a set of binoculars can walk rounds onto paper..... you could do that and write down your ups....