CLIFF NOTES: DO NOT RUN THE CBI 260 Rem Match if you plan to use AI Mags!!!


Finally got my rig put together and ran some loads @ AI mag length (2.85, 2.86 is mag length).

Loaded ladders for the 142 SMK and 140 Amax. I had not checked jump as I wanted to see how well they would shoot at AI mag length. They did not shoot well. Apparently the longer freebore of the CBI 260 Rem Match is NOT such a good idea if you plan to run AI Mags.

With the longer freebore, I am running a .05 jump on the 142 SMK and .065 jump on the 140 Amax. Both of these bullets prefer a .02 jump. I am going to play around with the charges some more to see if there is a charge that works well with the larger jump. I ran ladders from 41.9 thru 43.1 in .3 increments. I'm going to run a little higher to see if I can find an accuracy node that tolerates the larger jump.