With yr 7mm RM,you wont have much dial up to 300yds.Just divide yr dialing up into 1/3rds to 400yds and and 1/4s to 500yds.Try to round off to the closes inch.Not sure the drops for yr 7mm Rm.
Heres what I do for my 308.
4inch's=300yds
5inchs =333yds
6inchs =366yds
7inchs =400yds
8inchs =425yds
9inchs =450yds
10nchs=475yds
11nchs=500yds.
Theres a bit of drop between distances,but not enough to miss deer.Iv practice and shot at all the above diatance over the yrs.I know the 308 very well.Im no crack shot but deer don't no the difference.Enjoy yr canon and good hunting.
Yr 7mmRm will close the dial up distance abit better than the 308. I'm using Hornady SSTs 150gr at 2900ft/s.
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