Thanks for all the kind words guys. I had the Nimrod out on the range this morning and it turned what had been a mediocre load in the un-modified Bisley base-gun (300gr Cast Performance LFNGC, H110, new Winchester brass, WLP primer) into a decent performer: 6 shots into 3" at 25 yards, off-hand. Not anything for a bullseye shooter to be happy with, but darn good for me on the first outing with a new revolver. That load is a bit stouter than what I plan to run in the Nimrod when I start loading for it specifically, but it was all I had on hand. Next stop, the loading bench