Ok, thank you guys! I'll check at 150yds orso to see what happens to POIusing the two powder charges and keeping the POA the same. That's probably my maximum range given my abilities, iron sights, my old eyes and so on ... hopefully I'll get within 100yds though! I know Redclub's advice to use the smaller peep aperature helped shrink my groups - ordered a Merit adjustable insert as a result too!

thanks again!
phil