New To Reloading Question

[PeteS]

I would try either 29.0 or 30.0 and change seating depth to tune to your rifle.

Do you know how much jump you have at that OAL?

The difference between my chamber measurement and the OAL of the H 105 BTHP I loaded is .0205. I'm new to all these different measurements so is that sounding about right for the jump to the rifling?

Are you indicating 20 thousandths or 205 thousandths?  The former is reasonable, and the latter seems ridiculous.

I'd have to check my notes I wrote down, but here's a pic.    

The right one is a Factory Hornady Black 105 BTHP, and the left is the Dummy round I made for my Chamber. The chamber one is barely longer. The bullets r scratched up from other setups and tests. Or r you asking about the Bergers I loaded. Cause the Berger 108 BT loaded to 2.260 were fine, but were actually loaded to mabye 1 thounsandth off jam before me measuring my chamber.