Tac Report post Posted November 3, 2015 I have recently purchased a scope level and set it up per reccomended specs hung a piece of string with a weight and set level to crosshair being inline with the string. When i go and shoot my rifle i now find that i have to torque the rifle to get the level to center and the butt is not comfortable in the pocket of my shoulder. I would like to rotate the scope in the rings to get buttstock in my shoulder and be comfortable. Will this effect accuracy more or is being comfortable more important? I seem to shoot it well out to 700 yards without paying attention to canting but if i have to torque the rifle it seems accuracy would suffer. Share this post Link to post Share on other sites
briant_az Report post Posted November 3, 2015 Did you level the gun before you leveled the scope? 1 Share this post Link to post Share on other sites
Tac Report post Posted November 3, 2015 not canting the scope I'm wanting to cant the gun and level the scope. how will that effect overall performance?i understand if you hold the crosshairs canted in the scope but what if the scope is straight and the rifle is canted. so basically moving the scope to the side but keeping it vertical Share this post Link to post Share on other sites
rcdinaz Report post Posted November 3, 2015 Lance I know you know this but it will still be the same as your original statement. The scope offset is what is canting off of the axis so a canted rifle and a plumb scope is the same issue. Maybe the degree varies a bit, guess this is what you are saying. I am not trying to be a stickler, just that your original post was a great example and OP should know it still applies. Correct me if I missed something. Never have thought about barrel timing, may have to do some reading on that one. I don't shoot any bench comp but it may be something they take notice of. Share this post Link to post Share on other sites
308Nut Report post Posted November 3, 2015 I've researched this to death and analyzed the equations from every angle (no pun intended). The bottom line is that having a slightly canted rifle with the scope level is no problem AS LONG as your scope is level for all shots which it should be for rifles that are level with their scopes too. Once you're sighted in, you're good to go. The pictures in a previous post do a good job of illustrating what happens when you're canting a rifle but that's based on canting a rifle AND scope together. Being comfortable is important. 2 Share this post Link to post Share on other sites
Becker Report post Posted November 3, 2015 As mentioned above I don't think rifle cant changes anything. Just scope cant. You essentially can shoot a gun upside down. It all comes down to the path of the bullet in flight. Basically we all account for the bullet going straight up and down as it moves down range (as the diagram above shows before canting the gun AND scope). You can achieve that like I said "upside down" if you like. Think of your vertical post in the scope as the up wards movement of the bullet until it reaches the highest point in its trajectory. Any ways doesn't matter how you hold the gun as long as your scope is level! Share this post Link to post Share on other sites
kwp Report post Posted November 4, 2015 This is really a simple trigonometry problem. Assuming no wind and no spin drift, the ballistics come out of the equation. If the rifle is canted but scope is plum, the result is that the vertical axis of the bore is slightly left or right of the vertical axis of the scope. Let's say you have a scope height of 2" and rifle cant of 3 deg. Trig calcs the bore axis being 0.105" off the scope axis. Now let's say you sight in at 200 yards. To do so you would have to adjust the reticle to account for this slight offset. With a 200 yard zero, the look angle would be 0.000836 deg off the flight of the bullet (trig again). If you project this look angle out to 1000 yards the POI would be 0.4" off of center. (Smaller than a scope can adjust for and not even noticeable when compared to group sizes at that range). Obviously a greater cant will magnify this number. The takeaway here, get your rifle as close to plum as you can and then mount your scope plum and you'll be good to go. 3 Share this post Link to post Share on other sites
Tac Report post Posted November 4, 2015 Less than 1/2 inch off center is negligible at 1000 seems like way more human error involved make it comfy and scope plum shoot it and see what happens Share this post Link to post Share on other sites
rcdinaz Report post Posted November 4, 2015 I was searching and I found a picture I remember seeing on another site take a look. Anyway Tubb's has a bunch of stuff on the topic and has rifles with some extreme cant and scope height as an example. Apparently demonstrating the trig KWP posted. My bad, I guess it really doesn't matter as long as the scope is level when shooting. Of course Tubb's sells his own version of an anti cant level that attaches to your scope. 1 Share this post Link to post Share on other sites
10Turkeys Report post Posted November 4, 2015 rcdinaz, That picture is a chin stock. Delevoped for Rifle Silhouette by David Tubb. Caused quite a clammer back in the day, quite a few people purchased the stock and then the NRA made them illegal to use. David used the same set up when he was shooting the Sportsmans Team Challenge when it was popular. Tubb was a Great shot and innovator. 1 Share this post Link to post Share on other sites
MMACFIVE Report post Posted November 19, 2015 As mentioned above I don't think rifle cant changes anything. Just scope cant. You essentially can shoot a gun upside down. It all comes down to the path of the bullet in flight. Basically we all account for the bullet going straight up and down as it moves down range (as the diagram above shows before canting the gun AND scope). You can achieve that like I said "upside down" if you like. Think of your vertical post in the scope as the up wards movement of the bullet until it reaches the highest point in its trajectory. Any ways doesn't matter how you hold the gun as long as your scope is level! Becker is absolutely correct. A rifle does know if it is canted or not. It only matters if the scope is sighted in level and held level for all shots. Remember the barrel actually oscillates, or moves in a circular motion when it is fired. With a "good load" we are just catching the bullet exit at the same position of the barrels motion. Share this post Link to post Share on other sites
5guyshunting Report post Posted November 19, 2015 Good example of two sights. Scope is leveled with a level rifle, not to be used with a canted rifle. Red dot is used for close shots.Here is about as honest of a test as you could get. Frank Galli is world renowned.http://www.scout.com/military/snipers-hide/story/1540059-canted-rifle-level-scope Thats how the tv gangsta shoots a glock Share this post Link to post Share on other sites
cactusjack Report post Posted November 20, 2015 I shoot everything canted. Its called "kill shot" 3 Share this post Link to post Share on other sites
Big Browns Report post Posted November 20, 2015 ^^^ Thats funny!!!!! Share this post Link to post Share on other sites
