Ok I am new to shooting long range I have taken a few shots at around 300 yards but only because I knew my old rifle and thats around the range it was sighted in at. I do not currently have a scope but am planning to buy this Leapers UTG 3-12x44mm SWAT IE AO Mildot EZ-TAP Rain-Proof Riflescope FREE S&H SCP3-UM312AOIEW. Leapers UTG Rifle Scopes, Leapers Rifle Scopes. With a set of high rise rings to mount it on my sigm400. I have shooting solution free (its an android app) I am really clueless atm about how to even use a scope with mil dots, ive only ever used duplex style cross hairs but I want to be able to make longer shots and punch holes in paper at around 600 yards. My question is would I just use hold over with that scope? Sight it in at 100 yards and then my BC would give me the drop and wind drift correction. 75gr bthp would have a drop of 5.08mils and a drift of 1.0 so I could just use the mildots and hold 5 over and 1 mil to the left correct? (if the wind is coming from 3:00) Also how could I use the turrents to dial corrections in? I really dont understand the mill dots with moa turrents or how that works. I'm desperate, its my primary reason for joining this forum. I've looked and looked but I cannot find alot of clear cut and dry info. I wont have my scope for a few months tho (financial problems due to a medical issue in the family) After this trouble passes and if I can learn how to shoot decently with the leapers scope Ill probably upgrade.