Cool, let us know how you like the Weaver.
When I first got this barrel, I followed the advice of a fellow on Accurate Reloading who is very experienced with Contenders in general and the .30-30 (including AI versions) in particular. He recommended IMR 4198 and 125 grain Nosler ballistic tips. I tried his combo and was impressed enough with accuracy and performance that I looked no further. Years later, I'm still shooting the first load I tried. I don't remember the powder charge off-hand, but since mine's an Ackley version, you'd probably not want to use it anyway.