Target rifles need not go together with chronograph. I never used a chrony reloading ammo. Didn't need to know exact muzzle velocity; +/- 77 fps was close enough by guessing. I never owned one nor thought I needed one. Borrowed one to see velocity spread with different amounts of pressure rifle was held against my shoulder and velocity increase from clean to dirty barrel over 5 shots.chronograph. Target rifles and chronographs go together like peanut butter and jelly.
I never worked up a load for new barrels or any existing bullet-cartridge combination.
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