Thought about it a lot yesterday. I do believe I'm just going to go with the 1:32. It was pointed out to me that people smarter than I probably already put a lot of thought into it before choosing this twist for their barrels. It was the best choice for SMI and NULA, I don't see any reason I should change it. I may ask about the premium barrel. At this point, what's $10?
As for the Bergara barrel, the reason I'm not going that route is that I'm not completely sure I can make it work with a ramrod on the barrel, something I really want. Also Bergara barrels aren't set up for open sights. MN says I have to hunt with open sights during ML season. The cheapest I can find to have the barrel drilled is $30/hole. I also don't have any .45 stuff, so by the time I get the sights on and buy some bullets and sabots and all that stuff, I'm only saving a little.