I am new to long range shooting. The local gun shop near my house has a sale going on for the t/c venture. I already have this rifle in 30 06 and its accuracy at 100 yards is generally within .5 inch. So anyway I am considering going tomorrow to buy the t/c venture in 7mm rem mag to use for long range shooting at the range. Starting at a simple 200 and would like to eventually reach 1000 yards. Is this rifle going to be the right one for the job and if so is the caliber I want the right one or should I go with a 300 win mag or maybe even not a mag at all???