Blue dot loads are NOT low pressure loads.
I shot 40s, start at 10.0g and work up in .2g increments. Find max pressure for your outfit, and back off .5g.
IMPORTANT TO USE THICK CUP PRIMERS WITH BLUE DOT! CCI 41, 71/2, CCI BR-4. AVOID THE CCI 450S AS IT WILL SPIKE PRESSURES.
I fear that most will confuse pressure spikes with powder bridging in the powder measure. These large flake powders will bridge in the powder measure, one charge will be light, the next will be an over load. So, when using blue dot, I weigh EVERY charge....every single powder charge.
IN the 221 FB, I shot the 40s at 3000. In the 223, I shot the 40s at 3200, which gave me 1.5" groups at 200, plenty accurate for minute of squirrel. The accuracy node and max pressure with blue dot with 55's is at 2600, and trajectory was like a 45/70 at 200. So, I stuck with the 40s.
I did kill some close range coyotes/cats with the 55g Sierra lead tip blitz at 2600, which is better than a 22 Hornet. However, the 40g Nosler ballistic tip at 3200 proved to be an excellent coyote killing load.
Again, watch the powder bridging, weigh every single blue dot load, if you don't, you are in trouble, you just have not found it out, yet.