Travis,
I use 2.270 for a COAL because that's as long as the magazine will allow. I haven't checked it yet to see were that COAL is in relation to the lands. I'll have to check that tonight.
Mart
PS. Travis, I checked the distance to the lands. With the Speer 80 grain it touches the lands at 2.378, a quite a bit longer than the magazine will allow.
Thanks.
Travis