The relationship between the reticle and the target is not constant with an SFP scope, and as a result, the additional aiming points on a graduated of BDC-type ... 45-70 lever gun where shot ...

but each of these scopes has a reticle that’s designed for the ballistic drop of standard straight-wall cartridges. It’s a critical consideration, as the relatively heavy, slow-moving bullets drop ...

Compared with other bullet-drop-compensating (BDC ... has no reticle or any other visible presence of its own. On top of that, it takes a couple minutes tops to mount one on your gun.