I've tried several brands/types of "off the shelf" powders in my 45 cal. 1-26twt. Hot Rod Hawken with decent accuracy. . .looking to try some of the Swiss brand of powder. I have two bullets that I have been shooting, both grouping inside 5" at 100 yds. (not bad but feel it could be better); the LEE 452-255 RF and the Accurate 46-310H both lubed/sized to .453. The two powders that have shown the best results have been GOEX 2F and Triple 7 3F at 80 grains by volume lit by a RWS musket cap. I'm needing to make a powder order for other metallic cartridges I load for and plan to add Swiss to the mix. For this rifle/bullet which Swiss powder 1.5 or 2.0 should I order. . .or is it a coin toss? Thank you.