Cold weather testing equipment:
Both our NV sights dropped out during the night with dead rechargeble Batteries due to the cold. Made a extension from com wire, paper, and 100mph tape so we could carry the batts inside our clothing, units worked for another two hours thereafter and then died.
Snowman Torsten <firstname.lastname@example.org>
Germany - Monday, December 07, 1998 at 04:27:25 (EST)
SKEPTICAL CITY, BY-GAWD USA - Saturday, December 19, 1998 at 23:50:00 (EST)
Area 51, NM USA - Sunday, December 20, 1998 at 01:39:16 (EST)
Last night I put an AR-15 with a Weaver KT-15 scope in the backyard
for a good cold soak. This morning it was minus 4° F. and provide a
good test of the AR (lubed with LSA) and scope. The rifle worked fine,
but the Weaver didn't care for the cold. The normally usable clicks were
non-existent. Couldn't feel or hear anything. How do the better Leupolds
hold up in "brisk" weather?
Food for thought.
Once someone commented that the Weaver KTs have a spring type vibration in them upon impact or firing a shot. He was correct. Don't know if it matters though. I had never noticed it on an AR-15 which is prone to the action spring noise and vibration.
Ron N. <email@example.com>
USA - Tuesday, January 05, 1999 at 23:44:54 (EST)
Ron, did you notice any accuracy difference when the rifle was that
cold ? If so,approximately how much? Good point about the scope being finicky
about the cold.I think I'll try that myself.
Jeff Babineau <firstname.lastname@example.org>
Truro, N.S. Canada - Wednesday, January 06, 1999 at 11:04:23 (EST)
We know cold air (that is not 'thin wind') is denser. What effect does this have on ballistics? Sea level performance in the summer is one thing, what about the depths of winter?
From the scope test, we know springs and lubes behave slower in the cold. What effect does this have on rifles? Are there any rifles that won't work in the cold - semi autos, high spec' rifles?
We know fingers and muscles dislike the cold. What is the effect on the shooter?
Finally, condensation from breathing will fog eyepieces (know this from experience). What can be done to avoid this?
Terry Warner <email@example.com>
minus 36 degrees with a slight breeze, Canada - Thursday, January 07, 1999 at 09:08:05 (EST)
A few winters ago we had it as bad as you now, with temps in -20°C. I had my breath, or just the condensation of my body forming ice flowers on the lens during a hunting trip.
My quick fix was one of my long socks into which I slipped one of
those small heat bags for warm toes. I tied the sock in an O and used it
as a lens cover with the warm toaster bag in the rear.
Presto, warm objective, and no more condensation.
This year, if it ever gets cold, I try just taping the bag to the outside of the objective, may warm the lens that way?
Try it and tell me about it, but dont heat up the lens to quick or it may fracture.
G3ermany - Thursday, January 07, 1999 at 09:40:16 (EST)
1. Use RainX anti-fog on the eyepiece and Regular RainX on the objective.
2. Avoid a wide brimmed hat and thick ghillie veil. Just the heat from your head can fog up the eyepiece.
3. Breath out your nose as much as possible. It directs the hot moist air from your lungs away from the scope.
4. Try to avoid moving the weapon from warm indoors to cold outdoors a lot. In the Marines we used to try to use a cold room to store weapons in cold weather to keep condensation down. When living in an arctic tent with a yukon stove or such, keep weapons behind the frost liner if the tent has one.
Weapons operation in the cold. Its more of a lubrication thing than anything else. For semi-auto's use 3-in-one oil, with bolt guns white lithium grease has worked for me. Moly lube?
Elk Garden, WV USA - Thursday, January 07, 1999 at 10:00:15 (EST)
Put a Leupold 24X (first generation) in my deep freezer for about
6 hours the other day. The temp was -20° F. ( -28° C). There was
quite a bit of stiction (sp?) on the first attempt to move both elevation
and windage knobs, and each jumped about a moa or so. However, once broken
free, both knobs responded with tactile and audible clicks that were not
very different from those in normal temperatures.
Ron N. <firstname.lastname@example.org>
USA - Friday, January 08, 1999 at 16:57:23 (EST)
Wilmastrand, Finnland. - Wednesday, January 20, 1999 at 16:03:07 (ZULU)
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