Originally Posted By: DarkkerYes, and sort-of.
Win 760/H414, is among the older generation of ball powders. It is sensitive to an extent, it isn't as bad as RL-22 in the 25-06, but still somewhat.
The other issue is the 243. As many many reloading manuals/labs have said, the 243 case is a bit of a screwball. The 243 has random pressure excursions, with everything, for no reason.
Starting this summer, and working into this winter I have become a fan of CFE223(SMP-842) for the 243 in a BIG WAY!
Thus far it is incredibly stable, and provides very fast velocities, without pressure issues.
Thanks for the info. I just posted about these two being temp sensitive, forgot about your post. Are they the same powder, or just very close in burn rate?
What bullets are you using with CFE223?
Kevlars