Gunsmithing 6.5 143eldx freebore

[TC308]

So building a 6.5 creedmoor on a long action, want to do a switch barrel type setup on my tl3 (when it gets here) and want to run the 143 eldx but I can't find a print on it. The Saami reamers is .199" freebore. I found the 140 Berger print but I've ready that the 143 is longer. Since I'm not restricted by coal, I want to see what I can get out of it.

Does anybody have a print print for the 143 eldx or know what freebore I could run without a coal limitation?

 

[Supersubes]

I think the .199 would do you fine. The ideal freebore for the 140 berger would be shorter than that ideally, because it has a relatively short bearing surface and a really long nose. I'm of the opinion also that pushing the bullet out .030 or .050 wont amount to anything meaningful. If you want more speed go long barrel or bigger cartridge or both. A 6.5x284 will fit in your magazine and smoke the Creedmoor without breaking a sweat. Trying to push the creedmoor hard will only close the barrel life gap between the two.