Barrowed or stolen chronograph fps

[Dinadan]

I am especially interested in the Muzzle Energy numbers for the Pug, since that is  

   my normal carry. In the first chart I see that CCI Maxi-mag has a ME of 60.3 ft-lbs  

   ME while CCI Mini-mag has 58 ft-lbs, very close. I am guessing that because the LR  

   Mini-mag is about 3/8" shorter that the WMR Maxi-mag, that means that in effect the  

   LR round is fired from a longer barrel: 37% (more or less) longer. Recently I tested CCI  

   LR Velocitor and CCI WMR Gold Dot and there was no real difference in penetration from my  

   Pug. I am thinking that the extra barrel length which the WMR cylinder gives for LR  

   rounds is the reason for the obviously weaker LR round performing nearly as well as the WRM.  

   

   If you step up the the two inch barrel of the Black Widow, the cartridge/chamber  

   length ratio provides only about a 18% boost in barrel length for the LR, and the WMR  

   is way superior.

[sirscott]

[Dinadan]

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