Re: H4350 vs h4350 EXT... Different data /powder?
Sierra used a different set of components to develop thier load. thus they got different pressure readings and thier data came out different. This is why it is safe practice to startt low and work up regardless of the data you use. But It is best to always try to match the components you load as closely as possible to the data you select.
H4350 is H4350, it has been an extreme powder for as long as I can remember
It takes 43 muscles to frown, 17 to smile, and 3 for proper trigger squeeze.
The latest caliber or gear is no substitute for experience and skill. Rifles and cartridges don't make hits -- shooters do.
Fact of life:
After Monday and Tuesday, even the calendar says WTF!