Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels & Ballistics

Rifles, Bullets, Barrels & Ballistics Applied Ballistics


Reply

Canting the rifle

 
LinkBack Thread Tools Display Modes
  #1  
Old 07-31-2009, 07:26 PM
Junior Member
 
Join Date: Jul 2009
Posts: 3
Canting the rifle

I was wondering if there was any information on the effects of canting ones rifle. I was hoping to find a way of calculating the shot error when canting the rifle. I understand that the height of the scope above the bore as well as the range, balistic pate etc. must be factored in. I recently had trouble getting a tight group with a recently scoped rifle. My friend swears that it was due to mt canting the rifle. I would love to be able to put a real number on that effect.
Reply With Quote
  #2  
Old 07-31-2009, 09:45 PM
Gold Member
 
Join Date: Jun 2006
Location: Shangri-La
Posts: 931
Re: Canting the rifle

Cant Errors - Long range shooting

solution

use an EXD

BROWNELLS : EXD ENGINEERING : EXD ENGINEERING VERTICAL RETICLE INSTRUMENT - World's Largest Supplier of Firearm Accessories, Gun Parts and Gunsmithing Tools

while rifle is in a vise



aim out the window or door to a distant horizontal or vertical object (weight on a rope, 4' level on a fence, vertical corner of building) and level reticle.

Install a ScopLevel

Scoplevel Anti Cant Leveling Device



so you can duplicate holding the rifle uncanted in the field or on the bench.

It is not as important that you hold your rifle uncanted as it is that you hold your scope reticle level.
__________________
If you can read this, thank a teacher.......if you are reading this in English, thank a soldier.
Reply With Quote
  #3  
Old 08-01-2009, 12:43 PM
Platinum Member
 
Join Date: Jan 2003
Location: The rifle range, or archery range or behind the computer in Alaska
Posts: 3,590
Re: Canting the rifle

A simple formula is the sine of the degree of cant * drop at desired range from boreline. Drop from boreline is NOT corrected for your zero.

An example would be a drop of 273" at 877 yards.

The sine of the degree 1 = .02

Take .02 * 273" and you have 5.46". This is how much horizontal displacement you will have at 877 yards with a 1 degree cant.
__________________
__________________
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.
Reply With Quote
  #4  
Old 08-02-2009, 10:38 PM
Bronze Member
 
Join Date: Jul 2008
Location: columbia falls, mt
Posts: 53
Re: Canting the rifle

i hope i can remember the "easy" formula i read about a few years back...i believe you multiply your inches of drop and degrees of cant and then divide that by 47, it should quantify things for you for the first ten degrees of cant, give or take a little. the resulting number should be the approx number of inches that you will be low and right or low and left. i think that was the formula i read of. hope it helps. greg
Reply With Quote
  #5  
Old 08-03-2009, 09:52 AM
Platinum Member
 
Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 5,953
Re: Canting the rifle

Hmmmm... IMO you should not be compensating for canting your rifle, because you should not be canting your rifle. Get an anti-cant bubble level.

-MR
Reply With Quote
  #6  
Old 08-03-2009, 06:18 PM
Junior Member
 
Join Date: Jul 2009
Posts: 3
Re: Canting the rifle

Quote:
Originally Posted by gahlizard View Post
i hope i can remember the "easy" formula i read about a few years back...i believe you multiply your inches of drop and degrees of cant and then divide that by 47, it should quantify things for you for the first ten degrees of cant, give or take a little. the resulting number should be the approx number of inches that you will be low and right or low and left. i think that was the formula i read of. hope it helps. greg

Thanks alot. Together with the help from this site and some just plain thinking I now have a handle on my problem.
Reply With Quote
  #7  
Old 08-05-2009, 12:04 AM
Silver Member
 
Join Date: May 2003
Location: AK
Posts: 157
Re: Canting the rifle

Quote:
Originally Posted by woods View Post
Cant Errors - Long range shooting


It is not as important that you hold your rifle uncanted as it is that you hold your scope reticle level.
Agree!

If you mount your scope using a boresighter with collimating grid (Bushnell 74-3333) you will notice any cant in your aiming. Keep the horizontal reticle element level across your target and you won't cant your rifle.

ETA: If you are shooting from benchrest position, use a square as your aiming point. Place reticle so it's in-line with bottom corner of your aiming point, and shoot your groups there. Easy to see when your crosshair is right on the corner of a 90 deg angle. Hold that same precise point for every shot and watch your groups improve.

Last edited by edward hogan; 08-05-2009 at 12:08 AM.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Canting the rifle
Thread Thread Starter Forum Replies Last Post
Do you use a scope level to eliminate rifle canting? Len Backus Equipment Discussions 19 10-18-2009 05:19 AM
Canting What do you think? mo Long Range Scopes and Other Optics 13 09-27-2009 10:51 PM
How Canting Your Rifle Affects Long Range Accuracy by Carl Taylor ADMIN Technical Articles - Discussion 7 03-20-2009 08:00 PM
Canting - 2 Gustavo Rifles, Bullets, Barrels & Ballistics 0 05-09-2006 09:33 AM
Effects of Rifle Canting on LR Accuracy Brent Rifles, Bullets, Barrels & Ballistics 10 09-27-2003 03:42 PM


All times are GMT -5. The time now is 03:18 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC