In this Filed Test Shooting Video recorded in the Replica Airguns Indoor Sea Can Shooting Range, I test out the Gamo GP-20 Combat CO2 BB Pistol to see what the actual velocity is in fps shooting 4.5mm steel BB’s with a fresh CO2 Cartridge. I also shoot 10 rounds of BB’s into a paper target setup 30 feet down range to see just how accurate the accurate the Gamo GP-20 Combat Pistol is out of the box. If you are more interested in details and specifications along with some closer up video of the Gamo GP-20 Combat CO2 BB Pistol, then make sure to watch my Table Top Video for it located here.
So let’s get to the velocity test for the Gamo GP-20 Combat CO2 BB Pistol. Gamo does claim up to 400 fps and to find out if these claims are true, I first installed a brand new 12 gram CO2 cartridge in the Gamo GP-20 Combat CO2 BB Pistol and proceeded to shoot 5 rounds through my Chronograph. I then averaged the shots out and was impressed with a much higher than claimed velocity of 422 fps. My slowest recorded shot was 419 fps with the fastest shot hitting 424 fps, so all of them very close to each other.
Moving on to the accuracy portion of my Field Test, I then setup a brand new paper target 30 feet away and using a semi rested shooting position (Hands on a sand bag up front and sitting on a stool in the back), I purposely shot 10 rounds with care into the target. The Gamo GP-20 Combat CO2 BB Pistol does not have adjustable sights at all so you will have to adjust your aim point if it is not bang on out of the box for you. That said, for me I was able to get about a 3 inch 10 round shot grouping, fairly well centered but just a bit to the left, about an inch or so. The shots did spread out a bit more up and down with less of a spread left to right, but still a decent grouping none the less.
The Gamo GP-20 Combat CO2 BB Pistol is like many of these low cost CO2 NBB BB Pistols, was very predictable as I have shot a ton of them and since they all share similar mechanical attributes internally, they tend to shoot about the same. I don’t mean this as a bad thing since they generally all shoot fairly decent with right around 400 fps velocities and generally I get anywhere from a 2 inch to 4 inch grouping with them. The good parts is the design is tried and trued and seems to be very durable and problem free with less moving parts to go wrong. They are also rather low cost and the magazines are interchangeable, so if you have other models based on this same build design, then you can mix and mach your magazines and load them all up for non-stop shooting fun. I do like the overall feel of this NBB CO2 BB Pistol, and the sights are very easy to aim with being white dot in the front and fiber optic in the back. If you are looking for a low cost basic NBB CO2 BB Shooter then this could just check all those boxes for you.