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Crosman PRO77 |
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Steyr M Series (9
mm) |
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Info: Manufacturer/Model: Crosman PRO77 Replica Of: Steyr M Series (9 mm) Made In: USA Caliber/Ammunition/Feed: 177, steel BB, 17-shot magazine Air Source: CO2, 12 g Powerlet Accessories: None Recommended Pellet or BB: RWS Match Grade BBs (5.4 gr) Weight (lb)/Length (in): 1.3, 6.5 Body Material/Finish/Grips: metal & plastic, black, plastic Barrel Length (in)/Material/Rifled: 4.1, steel, no Trigger Action: SA only Trigger Pull (lbs)/Adjustable: 5.9 (SA), no Sights (front/rear): fixed, fixed Velocity (fps): 325 Sound Level (dB): 95 Thickness of Pellet Holder (in): N/A Manufactured Dates: 2007 - present (phase I: 2007-2008, phase II: 2008, phase III: 2009-present) Condition/Manual/Box: 98%, yes, no (backer card) Serial Number: 409D00713 |
Comments:
The Crosman PRO77 was
introduced in 2007 as part of Crosman's largest introduction of
new CO2 air pistols in many years. Although
Crosman claims that the PRO77 is not a replica of any
existing firearm, their engineers obviously had the Steyr
M-series pistols in mind when they designed the PRO77. The PRO77
is a blowback design with a metal slide and polymer body. The
blowback action, which is pretty strong, uses some of the CO2
released for the shot. This reduces the velocity of the shot as
well as the number of shots available from each cartridge. You
can expect about 50 good shots from each CO2
cylinder. The fixed sights produce a pretty good sight picture.
The two-stage single-action trigger has a smooth first stage and
a creepy second stage with an indistinct break point. Pulling
the trigger with the safety on causes a BB to fall out of the
barrel. The slide is supposed to lock back when the last shot
has been fired but this action is unreliable. Crosman recommends
using only Crosman Copperhead BBs with the PRO77. Unfortunately,
the Crosman BBs are a very poor match for this gun producing
awful shot groupings (well over two inches at 15 feet).
Switching to RWS or Daisy Avanti BBs tightens up the groups, but
even with these BBs the accuracy is poor. The measured muzzle
velocity of the PRO77 was well below that claimed by Crosman
(255 fps vs. 325 fps). It should be noted that reviews by users
on vendor websites have reported frequent reliability problems
with the PRO77. Most problems seem to be associated with trigger
failures and broken magazines. When the PRO77 was introduced
there were only a few steel BB guns on the market with blowback
action. Today, there are many more air pistols in this category
and most of them provide much better performance than the PRO77.
Unless you are a collector, I recommend passing on this Crosman
model.
PyramydAir
Report on Crosman PRO77 (Part 1)
Performance:
Measurements were made on
2/27/10 at a temperature of 69 ºF and 14' elevation. A ten shot
string was fired from a distance of 15' using RWS Match Grade BBs
(5.4 gr).
The highest velocity measured was 284 fps, the lowest was 232 fps
(average of the 10-shot string was 255 fps, s = 14). A six shot string
fired offhand with open sights grouped at 1.09". Click the thumbnail below to see a
larger image.
Click
here for a description of the measurement methods. The Crosman PRO77 was tested with RWS, Crosman, and Daisy Avanti BBs. The targets below, shot offhand, show the results.
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Right Profile: The safety lever, located on the rear right side,
rotates through 180º as shown below.
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Front View: The Weaver rail in front of the trigger guard will accept standard accessories (lasers, lights, etc.) as long as they are not too large. The trigger blade on the PRO77 is very wide. This will be uncomfortable for people with smaller hands. | ||
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Left Profile 2: The front and rear sight are fixed and give a decent sight picture. | ||
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Slide Action: The PRO77 is a blowback design, which means that some of the gas expelled from each shot is used to blow the slide back and recock the gun in true semi-automatic operation. The slide locks back when the last BB has been fired. The slide lock mechanism works most of the time, but is not always reliable. | ||
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Right Side Markings: | ||
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Left Side Markings: | ||
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Loading BBs: The imagazine will hold 17 BBs. The spring follower
has a locking position. BBs are loaded through a hole near the
base of the magazine. The magazine is made entirely of plastic
and is pretty fragile.
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Loading CO2:
To load a CO2
cartridge, the piercing screw must be removed using a coin or
screw driver with a wide blade.
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Packaging: The PRO77 was purchased as part of a kit that included two CO2 cartridges, a small package of Crosman Copperhead BBs, safety glasses, and a Crosman trigger lock. | ||
Copyright © 2006