last week I sighted my rimmy up, using eley subs, zero'd the scope to 60yds, at 70yds it was one mil dot under, and 82yds was one and half mil dots under, bang on, I was putting bullet on bullet
now out lamping tonight, of course, distances harder to judge, but was using winchester subs, put the crosshairs on a rabbit, perfect engine room shot, right where I was aiming, but on walking to it, it was out at 82yds by my reckoning that would have missed using eley's, so is it all down to different ammo, or was there another reason