Re: Leupold GrandSlam Shotgun muzzleloader Scope
Simple, if you shoot 3 pellets you put the scope on those marks and your gaps are the right distance apart to account for the drop..2 pellets the velocity is less therefore the gaps are bigger, the shotgun drops are even bigger therefore you need bigger gaps...I bought one when they first came out and tested it with the 250 shockwave, they are right on the money with the amount of drop..never checked the shotgun obviously but I'd bet they are perfect. Sit at the bench and look at the difference the gaps show at all three settings, that's the only way you'll see it... They don't work at just any point of adjustment only at those three marks...great scope, right where the big thick crosshairs meets the thin is dead on at 300 yards... Mine is on a t/c triumph..shot mine with 777 pellets also, never checked anything else.
I see your using it on a rifle, I'd set it on 9, sight it in at 100 yards dead on, then using a big piece of paper shoot a shot without changing anything and see how much higher the bullet hit at each mark, easy to figure out then how far each dot will shoot dead on..