What's your velocity? How much drop between 30 and 100 yards? I shoot a RB in .44 sighted with a Leupold M-8 2x and get 3" at 100 yards with a 7" drop from my 25 yard zero. This is with either a 240 SWC or a 240 Hornady XTP, both factory loads and they both hold the same zero. I'm sure your .41 shoots much flatter, especially as hot as you're pushing them, just curious how much.