I'm considering using .38 special +P Speer Gold Dots in my new Ruger SP101 but am unsure whether I should use the "short barrel" version (135 gr)or regular version (125 gr) for maximum performance--I have a 3" barrel and the "short barrel" version says it was designed specifically for use in 2" barrels and provides ballistics and other test data from a 2" barrel, and the standard version provides ballistics data from a 4" barrel, I'm obviously right in between. Would the short barrel version perform better or worse in a 3" barrel? I'm thinking a 3" barrel might actually slow it down as it appears to have been designed for complete powder burn by 2" of bullet travel, and the extra inch of barrel travel would not be accompanied by ongoing powder burn, effectively slowing it down? Does this make any sense? Thanks all! (the other load I'm considering is the Cor-bon +P 110 gr JHP which puts up great numbers, 1050 fps/269 ft lbs)