This is a great article, lots of good info here on not only the 41 but other BP cartridges as well. I am sure you know this, but one possible way of easier lubing for those heel-based bullets would be to use a Star sizer and SPG; this would (quickly) put the lube right where it belongs without the mess and bother.
I have tried before to find info on loading heel-based bullets, but had not come up with anything very useful. Until now...thanks again for sharing!
lathesmith