OK
IN a custom 14T Hart, zero freebore, 223 minimum saami match chamber
40g nosler ballistic tips
Rem 7 1/2 primers, CCI 41, CCI BR-4
12.0g = 3000 fps
14.3 is what I load with the lot# of powder that I have at 3200 fps and it groups 1 1/2" at 200 yards
14.6g is an absolute max load
WARNING:
BLUE DOT LOADS ARE NOT LOW PRESSURE LOADS!!!
Blue dot bridges in powder measures, meaning that you may Get a light charge, then a heavy charge!
Use thick cup primers only!!!
600 rounds inbetween cleanings, and friend went 900 on a fire ball with no accuracy issues.
Work up your loads accordingly.
If you are throwing charges with a powder measure, I would suggest that you throw and weigh 100 charges, record the charges to check the variance. Leave yourself some wiggle room so that you don't blow a primer with a hot load.
Redding powder measures do not throw Blue dot worth a darn. I have not checked the Harrells. Belding and mull would be the very best would be my guess.
Seafire over on 24hrcampfire.com is an expert with blue dot, and has shot Blue Dot in many, many calibers.
I also shot Blue Dot loads in a 22/250 during the squirrel wars, buddy shot it in a 220 Swift also.
Again:
BLUE DOT LOADS ARE NOT LOW PRESSURE LOADS!!!!! I CAN NOT STRESS THIS ENOUGH!