.38 Special
Here is a post pertaining to the testing and results obtained for the .38 Special caliber.
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Strange that the 135 grain Gold Dot +P shoots 141 ft/sec faster in a Smith 642 with a 1 7/8th inch barrel than it does in the generic 2 inch barrel.
One thing to remember, Burke:
So, it’s really more like you’re looking at 3.5″ with the T/C (I just measured from the back of the cylinder to the end of the barrel.) And looking at the numbers, that makes perfect sense.
Jim D.
I just don’t understand these numbers. If the T/C for 2″ was actually 3.5″ as stated in the post above, velocity should be higher for the T/C. It was lower with the Speer, significantly lower.
I enjoyed reading about these tests on the website-however, I’m having some difficulty with the comparison numbers with the 642.
In any event, the most credible data I guess would be in comparing the T/C velocities alone for the various barrel lengths, and noting the percentage reduction in velocity as barrel length is shortened.
Ted, sorry – I wasn’t clear enough. To get a good comparison using a revolver, you have to measure from the back of the cylinder to the end of the barrel. On my 642 that is right at 3.5 inches. So, then you look at the testing data we have with the T/C, find the numbers for 3″ and 4″, and that will give you a bracket for where the 3.5″ comparison would fall. One example:
Does that help?
Jim D.