I notice that a lot of guys that shoot BPCR at mid to long range will sit and use cross sticks as rifle support. I'm in the process of drafting a new set of rules for shooting BPCR at my club's 600 yd range. Can you guys give my some more details on pros /cons of the sitting position ? Reason I ask this specific question is per our current rules only prone is allowed on the 600 yd line. I'd like to add a rule that sitting be allowed for BPCR.