| DBBill |
| (.300 member) |
| 24/12/03 12:43 PM |
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Regulating a double rifle???
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I've always wondered about the effects of shooting in different areas have on the regulation of double rifles.
For example if you bought a gun made in Austia (or anywhere) and it was regulated with factory ammo what would likely happen if you took that rifle to Africa or Australia or anywhere where the ambient conditions were different....altitude was different, temperature was different, etc.
This would have an impact on how that same factory ammo would perform with a resultant change in poi and regulation......wouldn't it? Has anyone experienced this and if so, what did you do about it?
| mickey |
| (.416 member) |
| 24/12/03 01:23 PM |
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Re: Regulating a double rifle???
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Bill
You are right ambient temperature and altitude do effect the speed of the bullet and thus the regulation. This is also true with single barrel rifles. Increased pressure will increas velocity and during the 'Olden Days' Kynoch was loaded down in a Jungle load.
What always confused me is how a barrel rifled in the Northern Hemishere can shoot in the Southern Hemishere? Wouldn't the bullet just come out with no spin?
NitroX
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| (.700 member) |
| 24/12/03 02:20 PM |
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Re: Regulating a double rifle???
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In reply to:
What always confused me is how a barrel rifled in the Northern Hemishere can shoot in the Southern Hemishere? Wouldn't the bullet just come out with no spin?
Mick
What you are forgetting is when you are in the Southern Hemisphere you are standing upside down. That makes everything the right side up again and the spin is maintained.
Hey we should join that other board too.
***
Bill
That is why I am building up my loads mid-Summer so the tempaeratures are consistent (well that is my story and I am sticking to it!).
| DUGABOY1 |
| (.400 member) |
| 25/12/03 07:16 AM |
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Re: Regulating a double rifle???
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In reply to:
I've always wondered about the effects of shooting in different areas have on the regulation of double rifles.
According to my findings, you are absolutely correct in your assumption the regulation will be different according to Temprature, and altitude! Not as much by altitude as temprature, however!
I have two different regulateing loads for the doubles I use in the North American winter hunting at high altitude, say 4000 ft above sea level, up, and 20 to 60 deg temp fahrenheit , which takes in most of the western USA. Another load for the same rifle to be used in Africa, at sea level to 1500 ft above sea level, and in 90 to 120 deg fahrenheit heat. The loads are worked up for each sittuation either at my sister's home in PHX Arizona, @110 degs, or at my home in the Dallas/Fort Worth area in winter, @ 400 ft above.
Neither of these loads will regulate at it's opposite condition, very well. I find most Britt rifle regulate pritty well with factory at between 30, and 70 degs and under 1500 ft above, but have to use the tropical load in Africa, from September through November! For this reason, amoung others, I choose to hunt Africa in late June, to 15 Aug, when the temp in most of Zimbabwe, Zambia, and Caprevi are between 35 degs at night, to a high of 70 degs in the day, both temps fahrenheit !
Please note the change from centigrade to fahrenheit !
| DBBill |
| (.300 member) |
| 26/12/03 04:19 AM |
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Re: Regulating a double rifle???
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Be careful with your units on the temperatures as you are mixing them up a bit.
Zero degrees Centrigrade = 32 degreees Fahrenheit
100 degrees Centrigrade = 212 degrees Fahrenheit
The first is the melting point of ice and the second is the condensation point of steam.
| DUGABOY1 |
| (.400 member) |
| 26/12/03 05:42 AM |
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Re: Regulating a double rifle???
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You be right, Y'all! You have to overlook an uneducated ranch kid, of 67 years of age! I,ll edit out the brain failure! 
| DBBill |
| (.300 member) |
| 26/12/03 12:44 PM |
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Re: Regulating a double rifle???
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Mac......I can't help myself.....I'm a retired USAF Weather Officer.