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what is the actual velocity?

 
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  #1  
Old 04-18-2013, 11:25 AM
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Join Date: Apr 2013
Posts: 5
what is the actual velocity?

i read in lyman 47th reloading handbook about factory cartridges velocity and actual velocity.cal 270win 130g bullet has 3060 muzzel velocity same cartridge has 2883 velocity at 3 yards from 22" bbl length.in my loads i have 3166 velocity in 3 yards with same bullet (chronographs always in 3 yards)ma i have a 3343 muzzel velocity?can anyone help me thancks.
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  #2  
Old 04-19-2013, 06:00 AM
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Join Date: Dec 2005
Posts: 2,114
Re: what is the actual velocity?

Your velocity numbers don't make sense to me.

Could you check your data and verify it's correct, then let us know?

If you chronograph numbers are what you say, I suspect your loads are way too hot and pressure's too high for safety.
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  #3  
Old 04-19-2013, 08:10 AM
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Join Date: Jan 2012
Location: Hot Springs, South Dakota
Posts: 505
Re: what is the actual velocity?

If I am reading correctly, you are measuring with a chrono from 3 yards?

If you are, you are way too close and getting muzzle blast also. Try moving the chrono to 15-20 ft away from the muzzle.
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