Thread: Replication of ballistic performance @ 400 meters

I'm wanting to replicate projectile expansion in a media @ 400-600 meters by shooting them into said media at a distance of 10 meters. To remove the accuracy variable I want to shoot the projectiles at a target 10 meters distance from the barrel. Would the test be considered fair if I pulled projectiles from loaded factory ammo and tweaked them until I could chronograph at the published speed for this distance I.E utilizing Tail Boss to replicate speeds at 600 meters.

I can't see any issues with testing them in this method, but would be interested if anyone could poke holes in running the tests this way. thx.