The equipment list is always an interesting perspective, but not always indicative of what works best. Equipment lists are based on choices and in BR, those choices are generally fueled by "conventional wisdom." I've spoken to a lot of BR shooters lately, and very few of them can speak to why they use what they use with actual data. One honest guy answered a number of my questions with, "I don't know."
The argument in BR is, "cut rifled barrels don't work for rimfire." This is purely not true and there's actual data that says so. Slugging, taper lapping, most of the other hokus pokus just isn't "required" as much as it's worshipped as "the way."
MB