Thread: 223 on deer

Originally Posted by 7mm Rem Mag

They are about the only pill I couldn't get to shoot in my Tikka 1.8 twist

I initially had them shoot great in my 1:8 tikka @2920fps. But that was in hot weather and only one batch of pills which measured 0.020" shorter than the next batch lot I got. It was erratic as after the temperatures cooled off.
The 80gr are too long to stabilise in 1:8twist at that speed or less. If you change temp and barometric pressure in your ballistic app you can see the stability calc go up and down accordingly.
I ground 80% of the red tips off some as a test and they shot good again but their BC was degraded down to about G1 0.290!