Recoil and velocity test of the FN 510 Tactical 10mm vs the Sig P320 X-TEN COMP 10mm. The SIG X-TEN COMP has a 3.8" barrel, the FN 510 has a 4.7" barrel. Does it make a difference for recoil and velocity having the shorter barrel in the comp and which one should you spend your hard earned money on?