N570 in the cold

[Trm82]

So I was check VV website and came across this warning from them.
I have never really heard people discuss about pressure from being too cold with N570 has anyone had any experiences with this?
Should a guy steer clear of it living in a cold climate as they suggest ?

 

[Earnhardt]

…news to me…

 

[WeiserBucks]

If you're hunting in -65 you don't GAF about powder stability.

 

[Trm82]

If you're hunting in -65 you don't GAF about powder stability.

I never said I was hunting in -65 , I hunt in -20c/-4F so I'm asking if anyone has seen this pressure they are talking about in the warning.

 

[WeiserBucks]

I never said I was hunting in -65 , I hunt in -20c/-4F so I'm asking if anyone has seen this pressure they are talking about in the warning.

No. I hunt sub zero F regularly and never had an issue with N570

 

[WeiserBucks]

Their warning is a very conservative CYA statement probably pushed by lawyers.

 

[Trm82]

Their warning is a very conservative CYA statement probably pushed by lawyers.

Copy that , might stick with the N568 powder.

 

[slikmrc]

I remember reading that guys were seeing this cold temp spike with IMR 8133 also. Think they were up in your neck of the woods. Not uncommon to hunt in -4 or colder herein the NW US.

 

[waveslayer]

If that's the case, work up a load that's not pushing it to max pressure

 

[Lefty7mmstw]

570 isn't the only powder that will do that. There are plenty of reports of people having pressure issues at extremely cold temps with other powders too. That's one of the reasons why backing off a smidge from brass damage isn't enough. You have to cut 5% of your charge which will usually take 10% or so off the pressure.

 

[Seabeeken]

What about just switching to N-170?

 

[Trm82]

If that's the case, work up a load that's not pushing it to max pressure

You don't tell a drag racer to only use 3/4 throtttle do you ? No you feed it the corn till things are at breaking point
I'm just kidding.
Maybe I'll just be a better hunter and kill my food before November haha.

 

[BEEMAN]

I ran N570 in my 6.5 Sherman with 140 Berger's. I can't say that I noticed any pressure signs in the cold. I also shoot/hunt in some very cold weather.

 

[ShtrRdy]

Thanks for bringing this up. I was unaware of the sensitivity.