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#5526991 - 01/07/15 10:18 PM Shooting in the freezing cold?
Brother in-law Online   content
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Registered: 07/08/07
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I need to shoot tomorrow or Friday , will the cold throw off a true 0?

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#5527008 - 01/07/15 10:31 PM Re: Shooting in the freezing cold? [Re: Brother in-law]
BOBO the Clown Online   content
decoy

Registered: 04/19/07
Posts: 42153
Loc: Metroplex
Yes

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#5527081 - 01/07/15 11:43 PM Re: Shooting in the freezing cold? [Re: Brother in-law]
Tactical Cowboy Offline
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Registered: 08/23/11
Posts: 3163
Loc: San Angelo
I doubt it will be much. Would you hunt in cold temperatures?
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#5527107 - 01/08/15 12:09 AM Re: Shooting in the freezing cold? [Re: Brother in-law]
kmon1 Online   content
junior

Registered: 09/27/06
Posts: 21397
Loc: Texas
It will throw it off some depending on the powder used it might not be much or it might be quite a bit. Some powders it may only be 30 fps from Summer time shooting, other powders it might be over 100 fps from Summertime shooting.

Go shoot and have fun. If the bullet is a little slower no big deal unless stretching it long range then count it as a learning experience
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#5527119 - 01/08/15 12:34 AM Re: Shooting in the freezing cold? [Re: Brother in-law]
BigPig Offline
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Registered: 08/27/09
Posts: 10755
Loc: Forney, Tx
Try and keep the ammo on the inside of your jacket to help keep it warm.
PS: I heard this works/helps, but I have no proof of does/does not work.

But yes the cold we are having right now can effect the POI
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#5527331 - 01/08/15 07:53 AM Re: Shooting in the freezing cold? [Re: Brother in-law]
redchevy Offline
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Registered: 10/25/04
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Loc: Texas
Id say a lot of it depends on how far you are shooting and what your shooting. Sub 100 yard hunting and I doubt you have anything to worry about. 1000 yard shooting and im sure you do.
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#5527362 - 01/08/15 08:06 AM Re: Shooting in the freezing cold? [Re: Brother in-law]
KRoyal Online   sleepy
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Registered: 01/24/07
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Loc: Sherman/North of Dallas
Hope it's this cold on the 24th up up
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#5527461 - 01/08/15 08:50 AM Re: Shooting in the freezing cold? [Re: KRoyal]
P_102 Online   content
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Registered: 09/23/08
Posts: 775
Loc: Grapevine
Ran a quick calculation with my setup: 300 yds. and all the same data except temp:
75 degrees = 2.6 MOA
0 degrees = 2.7 MOA

Can't say about powder/load temp, maybe keep them warm just in case.

P_102


Edited by P_102 (01/08/15 08:51 AM)
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#5527559 - 01/08/15 09:33 AM Re: Shooting in the freezing cold? [Re: Brother in-law]
Judd Online   content


Registered: 01/22/09
Posts: 11163
Loc: Sachse, TX
Powder plays a role in how much too. The reloader powders seem to really take a hit with temperature differences. The H Extreme powders not near as much.
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#5527571 - 01/08/15 09:39 AM Re: Shooting in the freezing cold? [Re: Brother in-law]
kmon1 Online   content
junior

Registered: 09/27/06
Posts: 21397
Loc: Texas
Judd some of the reloader powders have been improved to be less sensitive, much like UNIQUE was changed to burn cleaner. I think they were loosing business to Hodgdon and knew it
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#5527599 - 01/08/15 09:53 AM Re: Shooting in the freezing cold? [Re: Brother in-law]
Cast Online   happy
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Registered: 12/14/08
Posts: 16014
Loc: North Texas - God's Country
This is why I try to stay with the Extreme line of powders. They tolerate temp changes.
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#5527788 - 01/08/15 11:14 AM Re: Shooting in the freezing cold? [Re: Brother in-law]
ChadTRG42 Online   happy
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Registered: 09/16/09
Posts: 10620
Loc: Lewisville, TX
His ammo is loaded with H4350, so he's good on that. It will change up your trajectory no doubt. But your zero shift, if it does, it will be slight.
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#5527913 - 01/08/15 11:57 AM Re: Shooting in the freezing cold? [Re: Brother in-law]
Cast Online   happy
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Registered: 12/14/08
Posts: 16014
Loc: North Texas - God's Country
So we're just talking air density?
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#5527928 - 01/08/15 12:02 PM Re: Shooting in the freezing cold? [Re: Cast]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 20471
Loc: Wolfe City, TX
Originally Posted By: Cast
So we're just talking air density?


Yes. And powder temp.

Let your cartridges sit out in the cold weather for hours versus bringing them straight out of a warm house to a warm truck then shooting them.
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#5528184 - 01/08/15 02:06 PM Re: Shooting in the freezing cold? [Re: Brother in-law]
Bbear Online   content
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Registered: 11/24/13
Posts: 699
Loc: West Texas
Might not be of much help, but one of my 25-06's uses RL-19. I'd read that it was a rather temp sensitive powder. So, when working up my loads, I would put the loaded ammo in the freezer then transfer to a cooler full of ice to take to the range.
Checked zero this past weekend with temps in the 20's and it was still dropping five shot in a nickel at 100 yards and zero was the same as were it was this past summer.

Might start carrying the rifles out to the range in August in the 100+ qt igloo! smile wink
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