Wheeler Professional Reticle Leveling System on Bulldog

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I’m trying to set my rifle up to lap my scope rings.This device isn’t exactly ideal for this type of barrel/shroud combo. The shroud must remain on the rifle because the picatinny rail that the scope is mounted on is attached to the shroud. I had to remove the bottom screw (holding the shroud cap on and lower rail in place) in order to slide the lower picatinny rail back clear about ¼” of space that gave me just enough to fit around the shroud and close the level.

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The vise isn’t equipped to adjust to the contour of this rifle. I placed pieces of cardboard between the stock and the rubber mold on the vise clamp in order to cut down on canting the rifle when tightening the clamp in the butt of the stock. The rear portion of the rifle makes contact with the vise at the bottom of the grip as opposed to beneath the butt of the stock. This, in addition to the space between the clamp and the stock where the cardboard is, makes it easy for the rifle to cant while working on it. Anyone else have these issues? If you did, how’d you work around them?
 
I do basically the same as what you are doing (after lapping in the rings). l just put a bubble level on the barrel and on the picatinny rail and call it good for leveling the gun both ways. Then I loosely mount my scope in the rings and look at a plumb string hanging from the ceiling 10 yards away so I can level the scope's cross hairs to gravity. Then a bubble level gets permenantly mounted on the scope tube and is therefore always level to gravity and then the scope torqued down.

Basic leveling usually works, but because the bore end may not be perfectly aligned vertically, shooting it at various yardages and holdovers will indicate if there is a cant to the system.

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Thanks go to Scotchmo and Michael for this detailed rendition of cant.
 
@Airgun-Hobbyist This is all new to me. I’m trying to learn some basic stuff, but I keep running into unexpected hurdles. This cold weather will afford me a little more time to workout some solutions though. At least I hope it does. I recently saw some permanent bubble level for scopes. Why leave them on once you level your scope and tighten the rings around the tube? 
 
@Airgun-Hobbyist This is all new to me. I’m trying to learn some basic stuff, but I keep running into unexpected hurdles. This cold weather will afford me a little more time to workout some solutions though. At least I hope it does. I recently saw some permanent bubble level for scopes. Why leave them on once you level your scope and tighten the rings around the tube?

The permanent slope bubble levels afford you a precision tool to look at to ensure that the gun is strait up and not canted to one side when taking the shot. For example, if you are shooting uphill at a bird on a grain silo and you cant the gun over then the barrel is not directly under the scope anymore and not in line with the intended point of impact. The bubble level will ensure that you are keeping everything true with the scope, bore, projectile and gravity.
 


I have one of those and it is great for the most part. I will get you close and do it fast and easy. But I have found that the level and plumb-bob method is a bit more accurate on some guns. Once again that is for the most part as the Arisaka does a couple of the guns up perfect to start with.
 
Yeah, they work. I wasn’t knocking it at all. I was just making you aware that with some scope and air gun combinations, the two parts will not fit between the scope and rail. If it will fit, I like to use it to get me close and then use the plumb line as other’s have mentioned. I just prefer the line because I know it will be accurate. Just my preference. 

Good luck. Stoti
 
@airgun-hobbyist I see and it makes sense. Using a scope level may be a helpful reminder to pay attention to my posture in certain positions as well during target practice. I realize that posture won’t always be perfect because on a hunt sometimes an animal will briefly present itself only to leave you with seconds to take an optimal shot. In that moment you just wanna align the reticle, dots, etc within the kill zone to take the best shot possible.
 
@airgun-hobyist I see and it makes sense. Using a scope level may be a helpful reminder to pay attention to my posture in certain positions as well during target practice. I realize that posture won’t always be perfect because on a hunt sometimes an animal will briefly present itself only to leave you with seconds to take an optimal shot. In that moment you just wanna align the reticle, dots, etc within the kill zone to take the best shot possible.

Practicing with these bubble levels let's you build "muscle memory" into your shooting. As you bring the gun up and into your shoulder it feels the same every time, and you know that you are level. Then, when hunting and you whip that stock up to your shoulder and look through the scope it will likely be naturally level or real close.

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