I am new to deer hunting but not to shooting. I have been told by some people that i should get a 270 or a 30-30 or 30-06. My dad has an 06 so i may not get that caliber as i could just use his. please help me choose a caliber. also have any of you heard anything about the new mossberg rifles (atr 100). Are they decent for a first time gunter. also what company sells pretty good optics for less than $100. thanks any help will be appriciated.