Originally Posted by prairie_goat

So how does a Ruger factory barrel not stabilizing certain bullets have anything to do with mag constraints?


Did you bother reading prior posts?

Originally Posted by shortactionsmoker
Factory 700's and 77's will easily kiss a 105 before you reach mag box limits. They'll spin 'em too.


A. A ruger has a longer mag box than the 700, so you probably can load longer in a 243. That being said, you are assuming the throat is correct, and you still have that pesky factory twist to contend with that won't stabilize 105's. I have tried it, groups go to schit after 100 yds.

B. I am building my 6XC on an M700, not a Ruger, so the magazine is shorter.

C. Find me a 7.5 twist factory 243.

D. What if you can hit the lands yet barely fit the round in your mag and your throat starts backing up? Do you turn your repeater into a single shot?

There is a reason the 6.5 Creedmoor was developed, to allow more latitude than the 260. Same concept with the 243 vs. Creedmoor -or- XC.