Need a Scope Rail For My Edgun R3M/R3
Guys,,,
I have some problem with finding and calculating scope height with my Edgun,,, the impact points are not the same that Hawke chairGun and Strelok mentioning ,,,, i know it happened because of putting wrong scope height, because of inclining of the Edgun R3M scope rails ,,,
so, any one knows the scope rail that fits Edgun scope base ??? but i want a scope rail without any inclining ,,, thanks guys,,,
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Viewing 11 replies - 1 through 11 (of 11 total)
EdGun scope rails are angles 30″ or 1/2 of a degree (otherwise known as 30MOA).
There should be no reason to have no drop in order to get ChairGun to work. I have a USFT with the same cant and I have no issues.
In ChairGun you want to know the height of the scope above the bore at the MUZZLE. And unless you spend the time drafting out the relationship of the scope and the barrel centerlines in CAD it’s pretty tough to figure out on paper. Although it is certainly possible.
Chairgun BC’s (ballistic coefficients) are not one size fits all. Each barrel has it’s own unique BC for each type of pellet. On top of that a couple clicks here or there is nothing really.
An 1/8″ click (1/8″ at 100 yards) at 25 yards is 1/32″ (0.03125″), so a 22 caliber pellet is 7 clicks tall at 30 yards.
If you gun is accurate to 0.125″ at 30 yards that means you can be off as much as 4 clicks and still be ‘on’ for that distance. If you rifle is within 0.5″ at 50 yards, that is 8 clicks and still ‘on target’.
Try adjusting the BC slightly, if the program says your BC is 0.031 try 0.029, that should add some clicks at the distance shots. Or go through the trouble of figuring out the BC of your rifle with it’s favorite pellet.
Changing the BC changes the long distance click data, changing the scope height changes the near distance click data.
So far CG has been close enough to produce some wicked accurate dope (data on previous engagement) sheets for field target competition in 177 and 22. Far better than doing it manually! 😐
This is from an earlier post. It works if you want to change the slope of your scope rail a few degrees.
1) remove the scope rings and rail.
2) wrap the muzzle end of the rail in heavy cloth or cardboard.
3) put he wrapped end of the rail in a vise and apply some hand pressure to gently bend the rail muzzle end up
4) frequently take the rail out of the vise and lay it upside down on a flat surface to observe if any and how much you have bent the rail. Take your time and don’t over do it.
5) stop bending when the rail has about 1/16 (or less) rise (arch) in it (for scopes that run out of adjustment – poi is high and can’t be lowered any further)
6) remount the scope with the muzzle end ring as close to the end of the rail as possible.
The slight bend is not noticeable.
That is it. Good luck.
Your thinking wrong, incline should not be entered into chairgun
Get the Burris Z rings to get the scope closer to center and it will work just fine (will work without too, chairgun doesnt care)
Guys,,, what is the Rail incline of old R3s???
i think old R2.5 & R3 don’t have any inclining,, isn’t it?
Brother Phlegm, Chairgun is for sissy girls… Try the Russian Stelok program..
I know it is 0.5 but thechairgun pro will not accept it. When I put there it will remove automatically. ..
And I think it is the incline of the target not the scope rail/base… ????
If you click on it..your phone cam will take the incline of the target. .
It is 0.5 degree of incline.
I checked my android chairgun app. it allows for negative incline. does anybody know the negative incline angle of the Matador rail?
Hemn in the field where it asks you to input your penis size, did you get an error “Value to small”? Luckily it didn’t happen to me but I know it happened to others like Sir Ville and SEcoda. That’ll definitely cause calculation errors.
Scope cant in relation to the bore will not affect the ballistic calculations.
Are you sure you input all the data into the calculator including the scope height over bore correctly? At the relatively short ranges we shoot a small error in scope height measurement won’t affect the numbers too much, but the more accurately you can measure it the better. Since the rail is canted you can measure the centerline height between the bore and the scope tube right around the windage knob and that will be more than adequate.
When making longer shots are you dialing elevation with the elevation turret or using reticle holdovers? If you’re using the reticle for holdovers and it’s a second focal plane scope the solutions provided by the ballistic software will only be valid at a certain magnification level where the reticle is the correct scale.
Also, remember– not all scopes are perfect. Sometimes elevation erector mechanisms have slight errors and need to be “trued” in the ballistics software. Sometimes on an SFP scope the power that’s marked on the magnification ring that indicates where the reticle is properly scaled is a little off. Your chronograph may report a slightly incorrect muzzle velocity. All of those can make the software output not match what the rifle actually shoots. You always need to “true” the software a little to what the rifle really shoots, once you get the corrections nailed then the software output will be much more accurate for future solutions.
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Synopsis, that was an excellent post. Spot on