Hi all! I have been thinking of putting a custom tube on one of my savages and contemplating on the chambering for some time now. It is gonna be either a .224 or .243 bore and should be able to launch some heavier for the caliber projectiles which probably warrants the 1:8 twist rate. I keep on stumbling though which particular case I should have it rimmed for. Looks like I 'm split between either a 22-250/243 AI or one of the newer fatter cases. I keep on checking the latter ones at the reloading store that I visit and I like them visually but, from what I see at least, there aren't a lot of rifles built for those. Am I simply not seeing them or there are some downsides to the newer crop short/super short magnum rounds? I read somewhere before that brass is much thicker and harder to work with for one, if that's true. Anything else I should be aware of that may steer me away from them toward the older cases that I mentioned? Thanks.