This is a little OT, but in the booklet that came with the Witness, it states not to use +P ammo. I?m just learning 10mm brands and ballistics, but haven?t seen that much +P ammo out there. The Buffalo Bore and Lehigh ammos look to be on the upper end of muzzle energy, but Buffalo states their ammo is fine for properly operating firearms.
Just curious what ammo many here use; I realize that might encompass the whole spectrum of ammunition, but surely there are a few favorites that have been dependable and reliable over the years.
Can?t believe I didn?t say a thing about the EAA Witness ! Picked it up yesterday, plan to go to the range tomorrow, but it?s one beautiful firearm ! The 14 round magazine with spacer that I purchased works great, plan to get another. The Witness has a great feel in the hand; I can see that the trigger and double action may need those aftermarket springs, but all in all, the Witness P is one beautiful handgun.

Thanks for all of the informative replies. The Witness should arrive today; I purchased some Magtech 180gr and Sig V-Crown 180gr ammo. I?ll take it to the range and see how the firearm performs. Hopefully, no aftermarket parts will be required. However, I did order a Henning upgrade kit:
H081-30    Conefit Guide Rod - protects your frame from battering.
H051-TL    XL Firing Pin - aids positive primer ignition.
W15114     Lighter Hammer Spring - reduces trigger pull weight.
H037-18    Lightened Trigger Plunger Spring - reduces trigger pull weight
Also purchased an extra magazine.
The above kit looks like it?s more for shooter comfort and dependability of the weapon.
Still, I?ll just have to see how things go before making any changes.

I saw where there were discussions about the EAA Witness Compact several months ago.
I ran across a great deal on a polymer compact, and purchased it. I had been thinking about getting a Glock 29 before, but this fortunate? Incident occurred and I picked the EAA up at a bargain basement price.
My question is probably a restatement of many of the previous posts, and I don?t even have any 10mm ammo yet, but, I have read of problems requiring replacement of springs, and quite a bit of tweaking.
This is a new firearm, so hopefully, some of the problems of the past have been addressed.
I wanted this for an EDC, and obviously need something dependable.
All comments appreciated.