After gathering this data for each test, I used ambient temperature, pre-test barrel temperature, and timed temperature reading data as a basis to generate a relative barrel-cooling trend for each barrel at each location. I then calculated this trend backward in time to the instant we had fired the last shot for that test. Data presented below represents strictly that information – difference in barrel temperature at each location immediately after firing the last shot and before firing the first shot.
I do not represent this data as being flawless but I am confident that the general trends are valid and that no significant or meaningful systematic errors occurred in the test protocol or occur in the following graphic presentations.
We began all testing with fully cleaned barrels that I had treated with a friction-proofing agent. We ran two clean and dry patches through each barrel before beginning this test but we did not clean any barrel during this testing. All barrels were brand new 26-inch Savage, varmint profile, unfluted but otherwise finished, factory-produced to standard specifications (the 5/35 is a factory barrel chambered to our proposed standard specifications for this chambering).