I have a couple boxes of 45 ACP 230gr +P HST's. I found out today with my chronograph that these rounds come out of my 4" XD compact at the same velocity the non +P is rated out of a 5" barrel. My question is that assuming both guns weighed the same and one had a 5" barrel and the other a 4". If I shot +P out of the 4" and non +P out of the 5" gun and the velocity for the 230gr. bullets were the same, would I feel the same amount of recoil between the two guns? Let's also assume the volume of powder is the same in both the non +P and the +P rounds.