50calty

I disagree with much of what you said about unburnt powder especially with BH-209.

BH-209 does emitt alot of black looking carbon after being shot, but it is not un-burnt powder. BH is a dirty buring powder it just does not leave it in the barrel... These results on the snow or the white sheet have been noted by others also.

I shoot 120 grain loads of BH or even T7 and get the powder burnt. You can verify this by continuing to shoot it through your chronograph. When you reach the law of diminishing returns your chrono will tell you.

My best results with a Gold Dot/Deep Curls is with a load of 110 to 120 grains...

Here is chart that shows the steady increase in velocity using much more that 100 grains of T7 or BH...

This is a comparison chart shooting a 45 cal rifle...



And this one is a incomplete 50 cal chart



I thought I had a picture of the dusting on the snow that BH does but I can not find it. I have collected the material and tried to re-ignite it - it is no go...

If you look at the charts you can see the velocity continues to rise as you add powder.

Primers... changing primers really does not have a lot of effect on the velocities that BH will earn for you - already tried that. It does change POI a bit but I can not even prove that it really effect group size that much.

Here is a target shot with different primers...