ISSF 25m Center Fire Pistol

Essentially the specifications are the same as that for Standard Pistol with the exception of calibre.

calibre; centerfire 7.62 to 9.65 mm
fit in a box 300 x 150 x 50 mm
minimum trigger weight (pull) 1000 grams(1*)
maximum pistol weight 1400 grams, including a magazine
maximum 220 mm sight radius
maximum barrel length 153 mm
no curvature of the grip around the hand (even partially)
open sights only (no scopes or mirror sights)
The grip cannot touch beyond the hand; i.e. the wrist must be visibly free when the pistol is held in the normal firing position.
Compensators, muzzle brakes, perforated barrels or any device(s) functioning in a similar manner are not allowed.
the rear part of the frame or grip which rests on top of the hand between the thumb and the forefinger, must not be longer than 30 mm. This distance is measured at a right angle to the extended center line of the bore.

1* The minimum trigger weight (pull) was 1360g prior to the 2009 rules