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Old December 20, 2009, 12:41 PM   #5
zippy13
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Join Date: August 23, 2008
Location: SoCal
Posts: 6,391
Here's the numbers for energy...

For 7/8-oz loads, 20-ga Remington Managed Recoil target loads have an advertised velocity of 1100 fps, Premiere target loads are at 1200 fps and the Managed Recoil slugs are at 1290 fps.

Energy varies with the square of the velocity. So, increasing from 1100 to 1290 fps represents an energy increase of 37.5% That seems significant to me.
1290^2 = 1664100
1100^2 = 1210000
1664100-1210000=454100
454100/1210000=0.375289256198347 (37.5%)
check: 1.375289256198347x1210000=1664100
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