I've found most factory match ammo is pretty close to what is stated. Most is tested from a 24in barrel, so I usually add 50 fps for my 26in barrel then punch it all in to my ballistic calculator. After a 100yds zero I usually take it straight out to 890 with the scope settings from the calculator than punch whatever adjustment I had to make on top of there's into the trajectory validation tool for a more precise fps estimate. I then run tests on targets between 220yds and 887yds (particular to the range I go too) to verify the new fps settings. Has been very successful without the use of a chrono.
After all that I use this setup when I shoot in the highpower Long Range steel matches at the range. As long as my settings are putting me on target with first round hits minus the wind call being off at times I see no reason to go through the trouble of running a chrono. As long as it gets there accurately and repeatably, I'm satisfied!
Bookmarks