muskrat30, my 22-250 shoots 55gr ballistic tips and vmax bullets fine with a 14 twist.
If I were to rebarrel, it'd be with a faster twist to shoot heavier bullets.
Since your barrel isn't installed yet and you're making an investment into a custom gun, its not too late to go to a faster twist. You can always sell the Shilen.
But if all you'll ever do is shoot 55gr and lighter than stay with it.
Post some photos when you get your rifle home.
Evan, you're photo link requires a password.
Have you thought about the Savage VLP:
http://www.savagearms.com/12Varminter.htm
You can get a 22-250 with a 9 twist. Not as fast as you like but you can still shoot 75gr bergers with it.
I have the VLP in 243win and love it. The accu-trigger is awesome.
I've mentioned it before on here. As much as I like my Remmy's, that Savage is the first one I tried that didn't feel like a 2x4 in my hands.
And of course the bolt handle won't fall off...
Allen