I am planning on buying a new rifle in the next few weeks and need some help with deciding on the cartridge. I have decided on either the remington 700 CDL deluxe in 300RUM or the remington 700 LSS in 7mmRUM or 338RUM. Ideally, I would like the 300RUM in the LSS model but can't get it. I want a cartridge for up to 1000 yard targets and hunting deer and elk from 100 to 700 plus yards. I am a left handed shooter and I reload. Is the 7mm enough gun for what I want it for? Is the 338 overkill? If I have to I'll settle on the 300 as it is my second choice. (I prefer the looks of the LSS!) Recoil is not a huge concern for me.