Pretty hard to beat 13 gr of Blue Dot under a 40 or 50 gr Vmax.
well ya can beat it.... both of those will take 14 grains of B/D.... that is what I list as max for a 50 grainer...
you can push the 40 grainer to 14.5....
I have messed around with some 35 grain NTX Hornady bullets ( the lead free one).. they are about the length of a 50 gr V Max...
I've pushed those to 15.5 and 16 grains of B/D, but I normally do the 15.5 max... with a SR primer...they are running like 3500 to 3600...
and also with Berger 30 grain HPs...
just for those that might be interested if you come across any 30 grain HP Bergers....
223 Range Report
Powder: Blue Dot
Bullet: Berger 30 grain HP, Varmint
Rifle Used: Ruger 77 VT
Barrel Length: 26 inches
Primer Used: Winchester Small Rifle
Bullet O.A.L. : 15.55 mms
Cartridge O.A.L. : 57.93 mms
10 grs: 2844 fps
11 grs: 3082 fps
12 grs: 3210 fps
13 grs: 3407 fps
14 grs: 3712 fps
15 grs: 3797 fps
15.5 grs: 3814 fps
16 grs: 3873 fps
16.5 grs: 3957 fps.
Accuracy Potential:
Load of 15 grains of Blue Dot, 30 gr Berger, WSR primer:
5 shot group size@ 100 yds: 0.4260 0.224 bullet diameter = 0.202 group size
Scope: 6.5 x 20 Simmons.. setting at 10 Power.
Personally my max load is 15 grains.. the extra 150 fps between that and 16.5 grains is not much gained..