For several years I've been wanting to rebarrel my .270. Since getting my .308 I have hardly shot the .270 and running the numbers they are basically identical. Pushing similar size bullets to similar velocities and not much difference in BC. Why so many high BC options in 7mm but not in .277 or the lighter wight .308 I don't know. The 150 grain Etip in the .308 is just about perfect for everything I do here in California. I can't really see any rounds in the standard '06 case that get me too excited. My brother has a 7mm Rem Mag and a .308 so I was thinking it would be good to convert my .270 in to 7mm Rem Mag. The writing is on the wall here in California and I don't doubt we will go lead free state wide at some point. I have been real happy with the Etips so far and looking at the options there is a 150 gr. 7mm with a BC of .498 but they also offer a 180 gr. .308 with a BC of .523. Running the numbers for the 150 gr 7mm at 3150fps vs. the 180 gr. .308 at 3000fps you get the following at 600 yards: 7mm: -56.2", 2149fps, 1538 ft/lbs. and 21.4" of drift .308: -61.4", 2076fps, 1715 ft/lbs. and 21.7" of drift The 7mm has one minute less drop but basically equal in drift with a slight energy nod to the 180 gr. .308. I don't hear much about the .300 Win Mag for long range. I'd think either could easily take Elk sized game at 600 yards. Would the long length of the lead free etips be a problem in a .300 Win Mag? Any other thoughts? Also I've been looking in to changing the bolt face of my .270 to a magnum size any idea how much that costs? I've seen a few replacement bolts on line but most of them are over $350.