Thanks for that report. I've been suspicious of NBT's at high speed, may have to try some.

They're usually very accurate, in some cases more accurate than NAB's.

Next time you're in the market for US869, try WC872, a Vulcan takedown surplus powder.

IME, performance is identical to 869; same charges, same velocities.

Here's a link. Talk to Jeff; he's knowledgable about these things. 872 is cheaper than 869.

http://www.gibrass.com/gunpowder.html

DF