243 AI freebore ?

degreen

Well-Known Member
Joined
Feb 24, 2015
Messages
174
Location
Lander, Wy
I am building my wife a 243AI. I want to set it up for the 110 SMK's, but when I tried 115 Bergers or 108 Eldm's I found around .025" difference in seating depth BTO. Just wondering if I should set the freebore for the 110 SMK's, and if they don't work just seat the 115's or 108's deeper in the case. I want to be able to chase the lands a couple times if I can with the 110's.
 
I have seated the 100 grain SGK to the same CBTO as the 110 SMK's. By the naked eye they look like they are very close as far as how much of the bullet is in the case. I wonder if the 107 SMK's would be in the same ballpark? Should I just set my throat for what I want with the 110's or find a happy medium between the 110 SMK's and the 115 Bergers?
 
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