Re: 300 RUM or 338 RUM?? Which and why???
Ask yourself, do I want a super flat trajectory or super low wind drift numbers.
After owning two 300 RUM's and one 338 Edge, I will take the 338 every time. I wont always take a 338 over a 30 cal but when it comes to the RUM case, I refuse to ever own another 300 RUM.
Simply put, the 338's 300 SMK has alot less wind drift and alot more energy than the 30 cal variety and offers conciderably longer barrel life. You can drive them 30 cal 180's at 3300-3400 FPS+ all you want but at the end of the day all it does for you is allow you to brag that you pissed further than your buddy who owns a 7mm Rem mag as well as cook the throat in the bore at an alarming rate. 180's at 3300 FPS just doesnt hold a candle to the energy and lack of drift as the 338's 300 SMK.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.