If you intend to have barrels added, then buy a CF rifle and not a pistol caliber or shotgun. The CF rifles use a SB2 receiver and just about any barrel can be fitted to it.
Thanks, Dinny
Great advice, then all you have to do is pick a caliber, and type of stock (synthetic or wood).
1. nope, so .280 is out probably. I have hundreds of .308 shells lying around because of the death of my woodsmaster 742.
Since you have .308 brass, if you want to save money on reloading, I would definitely consider a caliber based on the .308 case. I would recommend either .308

, or 7-08 (just use the 308 brass). BTW this leads us right back to .28 Cal. bullets.

Both have a great selection of bullets to choose from.
So after buying the starter kit I would need, primers, lead and what else?
A Reloading Manual. Got to have at least one!