I wanted to not only do my Field Test Shooting review for the Umarex 9XP Blowback CO2 BB Pistol but also compare it to the discontinued Umarex SA177 since both guns share most of their internal parts. I had a good idea that both airguns would perform very similarly with perhaps the newer 9XP having the edge due to it being almost 5 years newer.
A with all my current BB Pistol Field Test Shooting Reviews, I test out the real world Feet Per Second performance by shooting 5 rounds through my Chronograph to see what they average out at, of course I use a brand new CO2 for this and my choice of BB was RWS Zinc coated 5.1 grain Steel BB's.
I started out testing the Umarex SA177 to use as my baseline and after about 5 warmup shots, the SA177 came back to life after sitting on the shelf for many years un-shot. My 5 shot string averaged a respectable 397 fps which is pretty good for a blowback pistol!
I then moved on to the newer Umarex 9XP CO2 Blowback Pistol and right away it popped out all 5 shots at over 400 fps with an average of 412 for my 5 shot string. Not only was the Umarex 9XP more powerful but it also had a snappier blowback action and was louder than the SA177 leading me to believe the CO2 valve may be setup to let out a bit more CO2 with each shot.