Rimfire Chart.....


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viking499
January 31, 2012, 10:13 PM
I have seen them on here before, but can not find them right now.....

I am looking for a chart that compares the common rimfire cartridges as far as drop, energy etc.

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dampoo
February 1, 2012, 12:13 AM
From the folks at Rimfire Shooting:

http://rimfireshooting.com/index.php?showtopic=76

viking499
February 1, 2012, 08:42 AM
Thanks dampoo

wombat13
February 1, 2012, 11:27 AM
I think the first chart is incorrect. How is it possible that the 40gr 22 mag would have more wind deflection than the 40 gr standard velocity 22lr? The 22 mag should be shooting the same bullet faster which would give you less wind drift.

I think the chart has the wind drift for .22 mag and 40 gr. 22lr swapped.

CraigC
February 1, 2012, 12:03 PM
Actually that is true and standard velocity .22LR has less wind drift than the .17HMR as well. Which also seems counterintuitive.

wombat13
February 2, 2012, 11:50 AM
CraigC, do you know from experience or some other source that .22lr would have less wind drift than .22 mag or are you basing your comment on what is in the charts in the link?

The .22 mag is starting off much faster at the muzzle than the .22lr. There would have to be a huge difference in bullet bc for the .22lr to have less wind drift. It seems unlikely that a 40 gr. bullet fired in a .22 mag would have a vastly lower bc than a 40 gr. bullet fired in a .22lr.

bhk
February 2, 2012, 02:11 PM
Been shooting rimfires for over 50 years, and it is common knowledge that the target .22 long rifle subsonic loads have less wind drift than the long rifle high velocity loads. Funny things happen when the entire flight of a bullet is subsonic and lower wind drift is one of them.

Lots of information is available on the internet concerning this if you wish to Google. I just looked it up for hard numbers and found this: Wind drift at 100 yards with a 10 mph cross wind for .22 long rifle subsonics is 4.15 inches, for long rifle high velocity it is 5.23, and for 40 grain .22 magnums it is 4.82. That places the magnum between the long rifle subsonics and the .22 high velocity loads. More Googling might give you slightly different numbers, but you get the idea.

I believe the logic you are using makes sense when the entire flights of the bullets you are comparing are sonic, but the logic tends to fall apart when all or some of the bullet flight is subsonic.

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