I'd love to see some data on the 7SS with a shorter barrel even with the heavier projectiles as I'm sure I'll probably run some 175-180's through it too. Keep us posted! Who are you having chamber it? I'm looking for a new smith as my old one has fully retired, have a local guy that I'm still feeling out. I've had him thread some barrels and rebarrel one rifle but I haven't shot that rifle enough to really feel 100% on him yet.I just got my barrel in, 20" paradigm carbon 1:8" twist 7ss. Hopefully have everything else ready and will start forming then load development second half / late August. I plan to shoot 175's though, but hopefully I should have some data by the end of August.