I started plugging numbers once again for an LR elk/bear rifle. My initial plan was to just keep my 300 RUM, but go with a 28" or 30" barrel. I was also now thinking of the 338 RUM and shooting the 300g SMK. What could I expect for velocity wise with say a 28" or 30" barrel shooting the 300g SMK. The ballistics aren't bad even for say 2700fps, but I would really like to push it to 2800fps to really see any big advantage, then going over the 300 RUM and the 240g SMK at 3000.