Well, having both. . . I'd say that for ammo availability/selection you would be HARD PRESSED to put the 9x23 against the 10mm in factory loadings.
Figure 180gr hunting loads at 1300fps from a 5" barrel for the 10mm (as claimed by CorBon) to lightweight 135gr jhps moving at 1450fps.
Unfortunately we only have Winchester for "factory" stuff.
As for ease of shooting, I have never been bothered by handgun recoil (we ain't touching off 460 Wby in an 8" Contender, but that' be fun, once

), so the modest recoil of any 10mm load didn't bother me.
I will say that the 9x23 is a lighter recoiling round and that has its merits to some.
Having not loaded for the 9x23, I can't say for that caliber--yet. But with some proper home cookin' figure the 10mm to be able to hit 1400fps with 155gr and 1500fps with 135gr.
Between the two which would I rather have hanging on my belt? Well my 9x23 has 18+1 capacity and so does my P16.10. Can't I have one on each hip? :grin:
Either round will give you all you could want!
Derek
<font size=-1>[ This Message was edited by: viesczy on 2001-09-07 10:22 ]</font>