Things I liked:The most accurate for my Crosman 2100. 1/2 to 3/4 in. groups at 20 yards. No flyers. Clean and uniform. Things I would have changed:Better tin. I wonder how much they save by not using a screw cap. What others should know:The BC is fairly low, about 0.01, so they will lose lots of energy if you use them at long ranges.
Things I liked:Work pretty well with my Crosman 2100. I get some fliers though. I cannot see deformed skirts, or anything but performance is not as consistent as RWS superdomes.
Very good BC for this calibre and weight. Things I would have changed:The cap of the tin fits so tight that I cannot open it with my hands, I need a screwdriver!
Things I liked:Great for modding my crosman 1377. It has a rail for a scope and holds the barrel much better than the original plastic breech. It is easy to fit a long barrel. A 1760-001 will fit perfectly (but you'll have to replace or modify the stock barrel band). This breech allows acess to the probe with less disassembly than before. The hex keys included in the package make life simpler, especially the small one. Things I would have changed:The probe is too short. The original one has the same problem. Pellets may partially block the transfer port. Pellets with very long skirts, such as Gamo TS10s' may not even fire at all.
The small machine screw that attaches the breech to the frame is not supplied (you are supposed to use the small one). Including a slot-head screw of the proper size would be nice. The hex key is VERY thin and it is easy to damage the hex head. What others should know:If you are looking for a fancier breech, there are some high end (and more expensive) breeches. This one is fairly plain but gets the job done.