My dealer received my SU-22CA today, and I picked it up. I opened the box and gave it a once over, then discovered that it is one of the older models without the modified ejection port & feed ramp. I removed the bolt and recoil spring assembly, gave everything a good inspection, clean & lube, then reassembled it. The new Blackdog magazine was cracked at each assembly screw location, but it did not seem to want to fall apart, so hopefully it will last - still disappointing for a brand new product.
I headed to the range to give it a workout, and took some Federal bulk pack, Remington Subsonic, Aguila SE Extra subsonic, PMC Moderators, and some CCI Stingers. If any of the above rounds did fire, the next one did not, and would not extract. The extractor claw just slid right over the rim of the cartridge, instead of hooking it. I finally became discouraged with the continuous light strikes & extraction failures. I gave up after 15 or so rounds of various manufacture, and was glad I took my cleaning rod along, because it came in handy for punching out the rounds that did not extract.
So far, I am quite disappointed in my example of the SU-22CA, it is very neat in theory, but the actual shooting experience leaves me still wanting.