P99Man, I have introduced 2 women to shooting through my GLock 10mm. Both of them were in their early 20's and had never fired a handgun. One was very afraid of guns and thought only Cops and Soldiers should have them. Both proved to be quite profecint using UMC and other "light" plinking loads, accuracy didnt seem to diminish when I progressed them to Silvertips and Cor-bons. The advantage of having a student that has zero experiance with a gun is that they have no preconceaved notions about recoil. Neither of the new shooter complained about recoil and I never brought it up...it was a non issue. I simply instructed them on the proper grip, stance, gun safety etc. I told them that the gun would move in their hand when fired, like they had seen in the movies, but it wouldnt hurt them and they wouldnt drop it if they held it properly. I hade gun-buddies raging me for starting timid ladies out on a "bucking demon" like the 10mm. But it seemed to work out very well, they both own guns now and enjoy target shooting. The 10mm dosnt kick that bad anyway. If they had been shooting .38 wadcutters all day, and then picked up the 10mm the perceaved recoil would have seemed much worse. 99% of recoil controle is mental. Ask folks that shy away from "hard kicking" guns like the 10 and 45 to describe what they experiance during recoil. Very seldom will they say painfull or even uncomfortable. I have found its the fear of recoil, noise and muzzle blast, not the actual kick that keeps most recoil-shy people from shooting major calibers. Put it out of your mind, focus on the sights and trigger controle, let recoil happen..dont even think about it prior to the shot. I'm not a big guy, about 6-2 135lbs, and not overly machismo or egotistical guy, but I find very few handguns uncomfortable to shoot. just dont psych yourself out, and dont let recoil scare you away from a fun new toy or effective tool.
You want to know the honest truth? I also have a 9mm P99 and unless I fire one right after the other, I cant tell a real diference in the 9mm and 10mm recoil. the 10mm is louder and has more muzzle blast, but as for what I actualy feel in the palm of my hand, there is negligable difference.