I use my variable magnification SFP scopes at different magnifications, I just remember the holdover at say x10 magnification, then at x5 I use half the holdover and at x2.5 use quarter of the holdover compared to the x10 magnification. You do need a Mildot/MOA reticle with equally spaced stadia on the 6 o clock crosshair so it doesn't work on BDC reticles.
I have a Bushnel 2.5-16x42 which I can use at x2.5, x5, x10 and x15. At x2.5 it's great for close range hunting or fast fire plinking, x5 gives me great low light performance for off hand shooting, x10 for supported/bipod shots with x15 for bench rested target shooting and pellet testing, which means one combo for most of my air rifle needs.
I think when you choose the right scope for your rifle and type of shooting it always looks right. I don't know what type of scope you should put on your HW's it all really depends on what and when you use your rifle for, say targets, hunting, aiming style, shooting distances, light conditions, weight/balance all play a part in choosing the right specification of scope.