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Post by sw on Jan 15, 2009 7:58:40 GMT -5
:)5-6 years ago a cold snap hit the nation. It got to a little below zero here in Arkansas and colder north of here. A # of us shooting 10/60 VV-110/120/250XTP/shortMMP found that our velocities dropped from 2720'/sec to <2000'/sec at zeroish temps. That very accurate, "perfect", duplex instantly fell out of favor. RB developed the 14/61 duplex that replaced it. With the current cold temps over much of the nation, this would be a good time to check you load's velocity.
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Post by ewc on Jan 15, 2009 8:10:36 GMT -5
I will be shooting the .40 Saturday if my 30mm rings will show before then. I'm weighing powder this evening. The 14/61 may not be a bad idea - different powders of course-  |
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Post by fowlplay on Jan 15, 2009 13:15:36 GMT -5
Steve,
I would like to help you out but I have committed myself to do some insulation testing this coming Saturday. I will be in a duck blind in 7 degree weather. Saturday also start our late deer season but I have already tagged out. I guess my 50 caliber dinosaur will still Get-R-Done for me. ;D
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Post by nitro1947 on Jan 15, 2009 13:30:30 GMT -5
7 above and in a duck blind......ever think of seeing a shrink?  ;D ;D |
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Post by fowlplay on Jan 15, 2009 13:57:40 GMT -5
7 above and in a duck blind......ever think of seeing a shrink? ;D ;D Now your sounding like my wife. ;D ;D Maybe I need to start listening? |
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Post by sw on Jan 15, 2009 14:28:55 GMT -5
I would like to help you out This isn't to help me out; rather, a suggestion to check your own loads if they haven't already been tested at this cold of a temperature. Some people will be surprised. Some single powder loads may not even go off. |
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Post by wilmsmeyer on Jan 15, 2009 17:04:34 GMT -5
"fowl-play" I get it now. ;D ;D Hope you smoke 'em good.
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Post by savagebrother on Jan 15, 2009 17:11:56 GMT -5
sw i think it will be about size of the powder load and the intended pressure. my load of aa 2015 at 72.6 grains goes off just as good at 0 degrees as it does at 85 degrees. also i might mention that my sabotless load of 65 grains of h 322 and a 275 be does so just as well and they dont fit my bore real tight. just my 2 cents.
sb
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Post by Dave W on Jan 15, 2009 19:23:08 GMT -5
also i might mention that my sabotless load of 65 grains of h 322 and a 275 be does so just as well and they dont fit my bore real tight. just my 2 cents. sb Terry, I plan on shooting that load or thereabouts in the near future. I tried 63gr last time and the group and velocity/pressure was not what the gun wanted. How does that load group for you and what speed are you getting? I know you will probably be faster than what I get due to the longer barrel but just curious. Thanks |
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Post by savagebrother on Jan 16, 2009 12:50:54 GMT -5
hey dave w well its been averaging about 2635 fps, which when you think about it.
a 275 grain bullet moving at that velocity-look out lions and tigers and bears oh my!!! lol
sb
oh and it shoots at about and inch to and inch and a quarter
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Post by sw on Jan 16, 2009 22:18:14 GMT -5
I'd be interested in the velocity loss temp wise.
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;D ;D
