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Chronographing brass

 
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  #1  
Old 06-22-2010, 10:57 AM
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Chronographing brass

I bought a chrono the other day and loaded up my 35 gr VARGET with a 55 grain bullet and cci primers(for my 22-250). i trickled the powder and the biggest difference was .1 (35 gr compared to 35.1)...i used all the same REMINGTON casings

when i shot it through the chrono i was getting different readings... i shot 5 shots and they went from 3599-3626....is that going to be a problem. i really only want to have an accurate drop chart out to 500 yards as i am also working on a 7mm-08 project. Is there something i did wrong to get different readings or is that 27 fps difference not going to be a problem when shooting at 500 yards
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  #2  
Old 06-22-2010, 11:49 AM
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Re: Chronographing brass

27fps spread is not that bad, even though it would be better if you could find a load that had less of a spread.
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Old 06-22-2010, 11:56 AM
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Re: Chronographing brass

so you think that it is my load thats messing it up, even if the powder was almost exact in each case???
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Old 06-22-2010, 01:36 PM
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Re: Chronographing brass

Some loads have more of a spread than others. You could try another load and see what you get with it. You can also try another primer and see if that helps.
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Old 06-22-2010, 01:44 PM
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Re: Chronographing brass

ok, i havent even tested the drop chart with these loads yet. so im going to start with that and if it makes a big difference ill go back to the drawing board but i dont think that 27 fps should make a huge difference at only 500yds
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  #6  
Old 06-22-2010, 01:53 PM
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Re: Chronographing brass

It will not be as much, as if you were shooting at 1000yrds.
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  #7  
Old 06-24-2010, 07:42 PM
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Re: Chronographing brass

Do a drop chart using the 3599fps and do another using the 3626fps then compare the two at distances out to 500yds and you'll know. JohnnyK
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