Info:
Manufacturer/Model:
Made in Japan for Gamo, P-25
Replica Of:
Sig Sauer P230
(.380 ACP)
Made In: Japan
Caliber/Ammunition/Feed:
.177, lead pellets, 16-shot double-ended clip
Air Source:
CO2, 12 g Powerlet
Accessories: None
Recommended Pellet or BB: JSB Match Diabolo (7.4 gr)
Weight (lb)/Length (in):
1.63, 7.75
Body Material/Finish/Grips:
plastic/metal, black, plastic
Barrel Length (in)/Material/Rifled: 5.13, steel, yes
Trigger Action:
DA and SA
Trigger Pull (lbs)/Adjustable: 7.5 (DA), 5.25 (SA), no
Sights (front/rear):
fixed, fixed
Velocity (fps): 450 (w/Gamo PBA pellets)
Sound Level (dB): 96
Thickness of Pellet Holder (in): 0.283
Manufactured Dates: 2010 - present
Condition/Manual/Box: 98%, yes, yes (backer card)
Serial Number:
10G15200
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Comments:
The Gamo P-25, made in
Japan for Gamo, is styled after the Sig P230 firearm. The P-25
has a metal slide that operates by blowback action. The frame is
made of plastic. The finish is generally
nice, although some seams are clearly visible on the plastic
part of the gun. The blowback action is strong and gives the gun
a good kick. However, the extra gas required to operate the
heavy slide reduces the number of good shots per CO2
cylinder to around 50. The trigger is
both DA and SA. In DA mode, the trigger pull is long and fairly
smooth but it gets heavier toward the end. Also, just before the
end of the pull, you can feel the clip being rotated as part of
the trigger action. In SA mode, the pull is several pounds
lighter but is still long and still has the catch in it
associated with the rotation of the clip.
The pellet carrier (I will refer
to it as the magazine for convenience) is an unusual design
(similar to that of the Umarex Beretta PX4 Storm) that
incorporates two 8-shot clips located at each end of the
magazine. When one clip has been emptied, the magazine is
flipped over and the gun is ready to fire eight additional
shots. CO2
cylinders are loaded by pulling down on the backstrap to expose the CO2
chamber and piercing screw. The short piercing pin requires the
use of CO2
cylinders that do not have a depression in the tip. The Gamo
P-25 has
acceptable accuracy
(0.65") when used with the correct pellets (in this case, JSB
Match Diabolo pellets). It has a fairly high muzzle velocity for
a CO2
pellet gun (367 fps), but would need to be used with the very
light Gamo PBA pellets to get close to the manufacturer's
velocity claims. The shot-to-shot variation in muzzle velocity
was poor. There are only a few CO2
pellet pistols with blowback action currently on the
market. If you are looking to purchase a blowback pellet pistol,
the Gamo P-25 is worth a look.
Owner's
Manual for Gamo P-25 (.pdf)
Performance (lead pellets):
Measurements were made on
12/22/2010 at a temperature of 70 ºF and 5000' elevation. A ten shot
string was fired from a bench rest at 15' using JSB Match
Diabolo pellets (7.4 gr).
The highest velocity measured was 418 fps, the lowest was 352 fps
(average of the 10-shot string was 367 fps, s = 20). A five-shot string
fired with open sights grouped at 0.65". Click the thumbnail below to see a
larger image.
Click
here for a description of the measurement methods.

The Gamo P-25 was tested with the
following pellets: Gamo Match (1.27"), JSB Match Diabolo (0.65"), H&N Finale
Match Pistol (0.80"), RWS R-10 Match (1.08"), RWS Hobby
(0.83"), and JSB S100 (0.88"). All groups were measured center-to-center. The
smallest groups
were produced with the JSB Match Diabolo pellets. Click the
thumbnail image below to see the test targets.

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