Dave, its been mentioned for quite a while about pressure issues with Blue Dot, especially in the 41 magnum. You should be fine with the loads you mentioned. Also, don't worry about Starline brass, probably the best brass you can get & you can buy it direct.
Really there are no bad powders for the 41 magnum, the issue that's usually mentioned has been bullets, most people like them a bit heavier than 210 grs.
I've owned at least one 41 magnum since 1967 & taken a lot of game with them including 2 elk & its a great caliber, probably my second favorite. The Hornady 210's have a great reputation but I never use jacketed ammo on anything. My favored bullet for almost 50 years has been a 230 gr. Keith slug from an old Saeco mould. I also like a 250 gr. LBT WFN & took my last elk with it. That bullet broke both front shoulders of a very large cow & exited, she dropped at the shot. With the 230 gr. cast I've always used 17 grs of 2400 & the same amount with the 250 gr. cast.
Accuracy trumps recoil & velocity always.
I've always got complete penetration with both, even on elk & large mule deer. 9.2 grs. of Unique also works well with the 250 gr. LBT & gives over 1150 fps in my 5 1/2" Bisley. Universal will work, as does Power Pistol, H110 , AA9 , 4227 & 231 for a midrange load.
Some might ask, why only 17 grs. of 2400 with the 230 gr. cast, the reason is accuracy & penetration. I've always got both so why ask for more recoil if you're shooting clear through the animals.
Dick