Maybe in the market for a PSR soon, any feedback on the different ones out there, from AI to FN's Ballista, to Barrett MRAD? Assuming availability. Like the multi cal option, 308, 300 WM, and 338. See advantages around range discrimination, cost of ammo, etc...question is it worth it. 308 option is great for lower cost ammunition yet still being able to practice the TTP's with the rifle you would be using in 300WM or 338 should the extended range call for it. Thoughts? So which one is worth the money? Thanks.