I have a .25X.307 (rimmed version of the .308) in an AI configuration. This came from Chase Mountain Custom. The cartridge was called the 250 Brady, there were a few built for the Encore platform back when Mike Bellm had an active forum. I put a Noveski polygonal rifled barrel on a "stub" a donor lug that was drilled out and tapped to accept the new barrel.
I have had really good performance with it. 120 gr. bullets do a job on our TN white tails!
Parent cartidge, fireformed case and .243 for comparison.
Threaded Mode