Interesting. I took my New Nano along with my LC9S to the range today. I had previously been shooting my Nano at over 600 rounds through the gun in the past few weeks. Trying to get use to it, after shooting thousands of rounds through the LC9S. (Owned since it first came out)
Today I took 6 mags for the nano and 6 for the LC9s. I put both guns on the table and rapidly picked up one gun, then the other. The Nano has less recoil than the LC9S and less muzzle flip. I had not shot the LC9S much since buying the Nano, but I am usually a good shot with it. However, my first shots with the Ruger were HIGH. Great 2" group but high. The Nano was center. I have become use to it, so that helped.
The last 100 rounds were with Fiocchi 124gr. I love this ammo. Yes, it is hotter. And I could feel it with both guns. However, a Big difference in the LC9S. I could really feel a more pronounce recoil. The difference was significant especially when shooting two similar guns.
Not brutally harsh, but still significant.
Both guns are great guns. However, for CCW, I will start carrying the Nano.