I have a Tikka T-3 LH in .243 that I would like to re-barrel to a .257 Roberts. The Tikka platform action length will accomodate standard size cartridges, as well as short action ones. The magazines are one length and short action cartridge magazines have a block in them, preventing the shorter length cartridges from slipping back and forth in the magazine.

I have looked at loading data and can't find any standard OAL of .257 Roberts loads over 2.8" but am certain that a barrel with a long throat will allow me to seat the bullets farther out.

Two questions:
1. Is my thinking solid or am I forgetting something?
2. I'll need some names of 'smiths who are recommended for re-barrel projects.

Thanks for your input.

No reason in the world to not cut your chamber to handle a longer OAL Maximize your net capacity.

For a Douglas barrel it is hard to beat ITDs price. http://itdcustomgun.com/_wsn/page6.html

As to extra work or longer throat you would need to ask.

I've been happy with the work Too Manytools has done for me.

Gentlemen, thank you both for your responses and insight. This is going to be fun.