No, my freeboring is removing the rifling .5", giving the bullet a jump before hitting the rifling. If none of you have ever done this, how can you judge based on assumptions. I am basing what I say on facts. In fact we would have to do a disclaimer for myself and for THR, if I were to tell you all of the results.
"Did a test with two differant guns, one freebored one not. Loaded the non-freebored gun with Power Pistol under a 250 grn. rnl bullet until pressure signs were being seen in the primer. Loaded freebored gun using same components and was able to put 2.4 more grains of Power Pistol until the same primer signs were seen."
Some things to think about. .6 of a grain of Power Pistol is equal to an increase of 55 f.p.s. On paper, I have not chronographed it yet, an increase of 2.4 grains of powder over a normal load, would be equivalant to 220 f.p.s., with the same pressure as the base load. If that were possible, do you not think it would be worth the effort?
I am going to chronogaph the two loads to see what the differance is in velocity, and not just on paper.