6PPC bullet wt Vs. tune

[fishbone]

If a 6PPc is tuned (load, OAL) and the bullet wt is then changed from 67gr to 66 or 68gr, will it fall off the sweet spot. I would expect a velocity change, but how about it sliding to the edge of the tuned node, or farther?

 

[P.Ericson]

Most likely. I guess it depends alot on the shape of the bullet. If they are made in the same die(and same jacket lenght) I guess it might be less sensitive, but if not I would expect it change.