I'm certainly no expert, but, my understanding is that they used exclusively Douglas barrels.
I own a Flaigs "ACE" 25-06 and it's very accurate. It's built on an FN Supreme action and is my go to whitetail gun.
I've seen a couple of more through the years, but, don't have any first hand knowlege of those.
Rojelio
PS: Flaig's was a gunshop in Pennsylvania.
Last edited by Rojelio; 06/26/08.