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Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles

4seventy
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Reged: 07/05/03
Posts: 2210
Loc: Queensland Australia

Double Crossed!!!
29/12/03 08:52 AM

How's this for a bit of info from "The Drilling Hotline".
http://www.drillinghotline.com/double.shtml

"SXS - The argument against optics on a Side by Side is the so-called windage problem. Some recommend to only sight-in on one barrel - but this now reduces your very expensive double to a single shot rifle.

Let's examine the physics of a center line sight-in.
The rifle centers of a .470 caliber are about ½ to ¾" apart.
The rifle is regulated for the barrels to cross at 60 Meters (66 yds.).

The physics states that they will again be ¾" apart at... Answer: 120 meters

Your homework assignment is to calculate when the rifle will shoot 3 to 4" apart.
(You may use graph paper or join Members Only)

O/U - The argument against optics on an over and under rifle is the elevation difference.

That's right, but the difference can be used to your advantage. The lower barrel will give a larger midrange trajectory. A few sessions at the range will work out the unknowns".

Edited by 4seventy (29/12/03 09:11 AM)

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Subject	Posted by	Posted on
Double Crossed!!!	4seventy	29/12/03 08:52 AM
Re: Double Crossed!!!	DUGABOY1	30/12/03 08:28 AM
Re: Double Crossed!!!	4seventy	30/12/03 08:55 AM
Re: Double Crossed!!!	400NitroExpress	29/12/03 03:55 PM
Re: Double Crossed!!!	4seventy	29/12/03 07:09 PM
Re: Double Crossed!!!	NitroX	29/12/03 03:26 PM
Re: Double Crossed!!!	mickey	29/12/03 03:57 PM
Re: Double Crossed!!!	NitroX	29/12/03 04:27 PM
Re: Double Crossed!!!	400NitroExpress	29/12/03 08:11 PM
Re: Double Crossed!!!	4seventy	30/12/03 07:35 AM
Re: Double Crossed!!!	DUGABOY1	30/12/03 08:26 AM
Re: Double Crossed!!!	400NitroExpress	29/12/03 08:16 PM
Re: Double Crossed!!!	mickey	30/12/03 02:31 AM
Re: Double Crossed!!!	4seventy	29/12/03 07:57 PM

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