Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Hunting > Long Range Hunting & Shooting

Long Range Hunting & Shooting Nightforce Optics


measuring scope height using canted bases

LinkBack Thread Tools Display Modes
Unread 05-19-2009, 10:07 PM
Silver Member
Join Date: Feb 2009
Posts: 154
measuring scope height using canted bases

Does anyone know how to measure the scope height above boreline using canted bases??? do you use the back end of the scope where it sits higher above boreline or towards the objective where it's closer???

Just as an example, on my 17hmr if I measure from the objective it's 1.5" above bore. If I measure from the center of the scope it's 1.8" and If I measure from the rear it's 1.97"

my data from shooting from 25 40 50 and 100 yards plugging into trajectory software prints closer when using 1.97"

is there a correct formula or method to properly measuring scope height when using canted bases??

thanks in advance!!
Reply With Quote

Unread 05-19-2009, 10:32 PM
Bronze Member
Join Date: May 2009
Location: Louisiana
Posts: 62
Re: measuring scope height using canted bases

You may have to go to the range to confirm which measurement to use. A friend of mine had the same issue. Not going to make alot of difference until you get out there a ways. On his gun, with a 200 yd sight in, the ballistics program said to add 17 clicks to be on at 400 yds. with both scope height measurements. So it took quite a distance on that rifle before any discrepency showed up in the program using the 2 heights. Of course, when this will happen will depend on the trajectory of the round you are shooting.

I would plug in the higher, print off the data for the middle and lower number and go shoot and see what matches up.

Unfortunately, this looks like a case of having to tell the ballistics program what to do instead of the other way around....

Hopefuly somebody can give you a more useful answer than this. I just know we went and shot my buddies 7WSM to make sure and settled on the middle measurement at the scope .


God Bless The USA


Last edited by Seven Oaks; 05-19-2009 at 10:46 PM.
Reply With Quote


Thread Tools
Display Modes

Similar Threads for: measuring scope height using canted bases
Thread Thread Starter Forum Replies Last Post
Measuring scope height elkstalker300 Long Range Hunting & Shooting 27 06-07-2014 06:22 PM
Measuring Scope Height with a 20MOA Rail ?? .25MOA Long Range Hunting & Shooting 12 09-12-2013 12:58 PM
Canted Bases For Scope iSnipe Long Range Scopes and Other Optics 10 07-04-2013 01:10 PM
Measuring Scope Height?? Moman Long Range Scopes and Other Optics 1 03-18-2008 07:52 PM
Measuring scope-to-bore height ?? Holmes Long Range Scopes and Other Optics 2 04-08-2003 03:25 PM

All times are GMT -5. The time now is 02:06 AM.

All content ©2010-2015 Long Range Hunting, LLC