If I find a node with a certain bullet type and speed, does this mean I should find a similar node with a similar grain weight bullet, type, and speed? I'm thinking the weight and charge develop a certain "barrel whip", and the node is the point where the bullet leaves the barrel as it crosses the zero point, or harmonic.

I'm also thinking that if, for instance, if i'm using 168 grain smk's, I should look for a similar node if I load to a similar velocity with 168 gr Gamekings...

Anyone try this??~~