Bassfish EC's method finds jam Bruce Teel's method finds touch.
The point I've been trying to make is that a lot of people conflate jam and touch. grayfox's recommendation of .060" off the lands is a good example of that. If you use jam as a starting point you could be .030" in the lands depending on neck tension, you don't know and can not use the jump he recommended, especially if he's going off touching and you certainly couldn't use my .004" into the lands example. That's my point and I think a lot of new reloaders get confused by that. No matter if it's a gas gun or bolt action.
I don't expect most to go to the level of the pros but adopting some of their methods would be beneficial. You don't need to check touch every few hundred rounds, just try seating out a little further if your groups start to fall apart. Being consistent with headspace and trim length is all good advice, but you don't need to go OCD about it to the level of the pros.
The point I've been trying to make is that a lot of people conflate jam and touch. grayfox's recommendation of .060" off the lands is a good example of that. If you use jam as a starting point you could be .030" in the lands depending on neck tension, you don't know and can not use the jump he recommended, especially if he's going off touching and you certainly couldn't use my .004" into the lands example. That's my point and I think a lot of new reloaders get confused by that. No matter if it's a gas gun or bolt action.
I don't expect most to go to the level of the pros but adopting some of their methods would be beneficial. You don't need to check touch every few hundred rounds, just try seating out a little further if your groups start to fall apart. Being consistent with headspace and trim length is all good advice, but you don't need to go OCD about it to the level of the pros.