Wheeler Engineering Professional Reticle Leveling System
I just bought one of these a couple of weeks ago...been shooting LR for years with scopes only "eyeball" mounted and only had minor issues but figured this tool would simplify things...and it did.
Checked the scopes on all my long and medium range rifles (5 of them)...all were unlevel to some degree, some worse than others but none were very bad at all.
Mounted the Vortex on my new 30-06 with this kit, used the front scope base to level the rifle..."shot the box" at 200 yards, perfect square.
I believe a lot of folks tend to overthink things sometimes...these neat lil kits speed up proper mounting in that you don't have to get yourself crosseyed from looking through the scope to level it and they ARE worth the money.
The caveat is...in all those years of shooting, up until the last 5 years....I never dialed a scope, hell, never owned a scope that cost over $200...the came the internet (for me), first I bought an S&B (overkill, very nice scope, but not what I expected....I think I expected something along the lines of Hubble for that price tag....found I didn't need it, sold it), bought a $600 Leupold (another letdown, nice scope, just didn't see the $600 price tag as worth it...sold it)...had some good luck with Nikons in the $300-$400 range...the last one I bought was the Vortex Viper HS (non LR) 4-16x44mm for $500...its a little early to tell but I think this scope is the "sweet spot"...does the job at a reasonable price.
Not dialing explains why I never had much trouble with slightly unlevel reticles...but so far the Vortex seems good to go and was bench mounted and leveled.