Hi I think people here are viewinghis question of wheeler system to having a level on scope or rail or built into scope or rings ,.First the Wheeler system is good I use mine alot , as I do other things likea wedge to level scope to gun but I always verify my work , to ,ake sure it is spot on. then I install my levels on scope ,
The guy here ToddGedddes63 gave another way to check level on scope by having a string or fishing line with a sinker tied on it and then confirm it lines up exact with string as a string with always be PLUMB so he is correct ,
SO yes at long ranges everything needs to be exactly plumb or forget hitting your target WHat I am talking about is If you shot say 1000 yrds for example while anyone can walk in to hit target with many shots but to understand just how much your POI will be off , say you shooting at a 72 inch target and you were spot on with your dailing or holding to hit center , but you make a mistake of being off by like *degrees you can be 40 inches off center meaning a clean miss as from center of target is 36 in at any point .
Now guys here may say well we don't shoot 1000 yds with our airguns well airguns are worse as they don't have the speed and BC of a powder burner , so example a 1000 yrd shot is about equal to a 300 yrd shot with a pcp gun .
OK here is what I use for leveling my scopes and put a level on my scopes
first to level scope to gun I use
1. Wheeler 2 clamp set up level system
2, wheeler small level magnetic
3. a string or line with a weight on it and it is attached say 6 feet in air and the weight will hold string exactly perfect
Levels for guns
1, this is my favorite it is not a bubble level it is a ball level so way more sensitive best for Long range it can be illuminater with a a tritium phosphor capsule which can be bought on line
2,any bubble level attached to rail or to scope
3 some mounts have built in bubble levels so nothing sticks out of gun , most are pricey like
SPURH , STIENER , RRS ECT
4 I own 2 scopes with built in levels inside of scope , one is my US-OPTICS B25 , the other is my thermal ATN HD THOR 5-50
LOU