Thread: Trajectory Validation

Guys, been playing around with my .270 at various ranges. Just been trying to make the trajectory numbers marry up.

So so far I have got my load - 130gr SST, Norma brass, 60gr AR 2213SC. On a hit sunny day it chronied at right on 3000fps. I have it a bang on 100m zero.

Entered all the data into strelok. Took it to 200m. Strelok tells me up .5 MRAD. Fire. POI strikes 3" low if I recall. Anyway I needed .6 to get it bang on. Trajectory val = 2750 fps.

Try at 330m. Up 1.7 MRAD. Using 2750fps. Fire, hit x3. A little high but hard to tell if it's me or what.

Try at 480m. Up 3.5 MRAD. Strikes way high. Guess -.3 MRAD. 4x hits, off to right but fine for height. Trajectory val showing 2872 fps. Sweet.

But then it doesn't marry up at the shorter ranges. Any body see something I'm doing obviously wrong?

Cheers