OK, I have been shooting 10mm for 24 years now
I have Delta Elite mags with and without bumpers, I think I have 5 and I have used 8 round Wilson Combat .45 mags for years and years
They all work flawlessly with the Delta I had and my Kimber Eclipse works with all of them-that's my .02

Yup
I feel weird as this gun has been one of the very few I left alone and it is awesome
If you want I can post pics of gun and ammo

I have had my Eclipse since 2005 or so bought it new.
Had a 22lb spring and finally settled on a 20lb spring.
It has been 100% with CCi Blazers, Georgia Arms 180 FMJ as both are my primary plinking ammo.
It is STUPID accurate with both those factory loads, I have shot 135 Nosler loads and they are very accurate too, 155 Gold Dots from Georgia Arms is my defense load and I have shot some 155 XTP's with good results.
I have not shot some 200 Noslers, this is next along with the new Federal soft point 180 grain load.
This pistol is one of the most accurate out of the box bone stock guns I have ever fired, and it shoots flat out to 100 yards.
Kimber screwed this one together right, great trigger and great sights regulated
Every person who has shot it loves it

I have some 155 grain
I bought it thinking it was "XTP" but this was before that bullet--way late 80's
The back of the box lists these velocities:

155 HP  1410 !
170 HP  1320
200 FMJ 1150

the box flap has 88 stamped-this is a refernce year in my opinion
hope this helps--they are HOT when I shot 5 they were very accurate
If anyone wants some to test I would be happy to mail you 5 if you send me some denero