WC-820 and 7-TCU

[w.w.wall]

Looking for some load data for rcbs 145 cast in the 7-tcu with wc-820 powder. The powder may be too fast, but ok for lighter loads?

[Jon K]

w.w. wall,

I haven't used WC820, but , it looks like same burn rate as AA#9 or H110. That falls right in between 2 loads that I do use in the 7tcu.

T/C 10"
Fed 205 primer
RCBS 145 Sil
Unique 8 gr
1296 fps avg/ 4.3 sd dev

T/C 10"
Fed 205 primer
RCBS 145 Sil
H4227 14.5 gr
1400 fps avg/ 4.5 std dev

I use these loads to shoot IHMSA/NRA Silhoutte in Standing Class- very accurate and mild to shoot. Bullets cast- ww/10% lino,or 20:1 (bhn 9-10) retains good knock down@200m

Hope this helps,
Have Fun Shooting,

Jon

:castmine:

My guess for your wc820 would be to start around 10-12 grains.

[w.w.wall]

Thanks for the info Jon K, I'll give it a shot and see how it goes. My usual load for this bullet is 22.0 grains of wc-846 and it shoots great, but I wanted to try wc-820 because I have quite a bit of it, about 16 pounds. Should make a nice light standing load.

wally wall