Ok guys I have my lyman sighted in with my Nikon BDC scope with 105 of blackhorn 209....I am dead on at 100 yards...any guesses on the drop at 150 and 200???? I was guessing 3" low at 150....6.5" low at 200???

That's really hard to say without shooting them. I ran them through a ballistic calculator with a BC of .207 and a velocity of 1923... There would be a drop of -4.69 at 150 yards and -13.63 at 200 yards for a 250 grain Barnes Expander. I personally would guess more then that.That is why there is nothing that beats range time...

Thanks that helps immensely...yes I need to get out and shoot at those two distances...just always rarely get shots out past 100...lots of timber and such in SW Iowa