I will be going deer hunting with my boss soon in georgia.He tells me that I need a flat shooting cartridge good out to about 300 yds. He mentioned a 7mm magnum. Although I own 14 guns, none of them is suitable for this. I thought my 30-30 Model 94 would be ok, but he says no. Would a 30-06 M1 Garand be Ok? Weight is not a factor. I've been looking for an excuse to buy one.