Re: H4350 vs h4350 EXT... Different data /powder?
correct. That will give you the ballpark you can safely work in. I personally use the highest start charge with the lowest MAX charge when crossing data to develop a load. then IF and ONLY if I apporach MAX without over pressure signs, ill go ahead and load over max so long as the results continue to improve and pressure signs stay normal.
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!