I finally got the chance to do my first official Field Test Shooting Video Review using the Caldwell Ballistic Precision Chronograph and like my Test video everything went really well. I was a little bit scared since my first round through it shooting the Crosman DPMS SBR CO2 Blowback BB M4 was a "no read" but then the following 5 shots where all good. I think my shot placement was just a tad off on the first shot as I adjusted my aim a bit for the tore 5 shots.
So getting to the results of the Crosman DPMS SBR CO2 Blowback BB M4 Air Rifle... I was using a somewhat used set of 12 gram CO2 cartridges that I had previously shot a couple of magazine through shooting in a bit of semi auto and full auto so I would assume I had at least half of, if not a bit more of my CO2 left in them. The Crosman DPMS SBR CO2 Blowback BB M4 was also fully warmed up and it had been a day since I shot it last which lets the CO2 and the gun warm up and pretty much perform as if it was using new CO2 for the most part.
My results shooting 5 readable rounds through my Caldwell Ballistic Precision Chronograph with the Crosman DPMS SBR CO2 Blowback BB M4 Air Rifle where an average fps of 402 fps, the slowest being 397 fps and the fasters hitting 411 fps so not too m much of a spread. I was using RWS 5.1 grain 4.5mm zinc coated Steel BB's for my testing.
Moving on to my accuracy testing. I would like to note I was using a Red/Green dot scope which I think is a great add on for any action shooting air rifle. Shooting with the included open iron sights may not have given us a little bit different results but I don't think by too much. My first grouping was with 10 shots all in semi auto shooting mode and this resulted in a nice very close to 1 inch grouping with 8 out of the 10 shots all within about a 3/4 inch group. I then adjusted my sector switch to the much more fun full auto mode for the 15 remaining 4.5 mm Steel BB's and setup again 30 feet away. I then let her rip releasing all 15 rounds till the Crosman DPMS SBR CO2 Blowback BB M4 bolt locked back and to be honest I was fairly surprised at how tight my 15 round full auto group was. It only spread out to about 2 inches with not too much vertical drop so velocity remained pretty consistent which was nice to see.
All in all you really can not go wrong with the Crosman DPMS SBR CO2 Blowback BB M4, it's got more than enough velocity at right around 400 fps which is great for a blowback action shooter still providing some nice accuracy not only in semi auto but also full auto shooting modes. And it has got to be the coolest looking and functioning 4.5mm Blowback BB M4 out there right now.