30.06. With 165 Sierra BT

[bobz7]

Hi everyone, I was able to shoot 500 & 600 yards for the first time, very little wind. At 500 three shots
4 1/2 in. At 600 8 in. Question is was 165 BT unstable at 600 yd. or the shooter. And what range will bullet spin cause drift. thanks

 

[KevinThomas]

Hi Bob,

You didn't mention which of the 165s this was; the SBT or the HPBT, or its initial velocity. My guess here is (especially if this is the HPBT), the bullet is likely going transonic at around the 800 yard mark and beginning to suffer from that transition.

Some more details would help.