Yes, I agree every guns different and you got use some judgement. If you use the .22 cal pellets as an example, and stick with the recomendation to not use pellets in spingers over the 15gr . suggested max, then you eliminate a lot of very good pellets. I count about 16 in .22 on Pyramids site that are over 15gr. These include some good stuff, such as most of the Beeman's, JSB's, and Gamo's. I'm certainly not suggesting using a real heavy pellet like a En-jin. Just stuff that goes maybe only 2 to 3 grains over the limit. Just suggesting to the guy with the Crosman and Kodiacks, not to sweat it, and have fun. I am only expressing my opinion, and assume all risk to my own guns. Cliffspot, my RWS 320 (B-20),also hates heavy pellets . Would do the same thing yours does with anything heavier than superdomes, and it DID break a spring. I believe the wire dia. of the factory spring in that gun was around .118 dia. maybe a little less. It broke clean, near the guide, about 2 inches from the end. The problem I found with my gun is the stuff inside was not good quality. I actually like my newest G-1 Extreme with the gold trigger installed better than that gun. It shoots faster, and cocks easier, all with only a quick clean and home lube and polish using the original factory guts. To be honest, I did shoot the 320 about 3000 times, over about two years, before the spring broke. I then tuned it with a maccari spring kit and seal myself. It only likes CPL's now. My R-10 on the other hand , will not shoot anything but CPH's and Crow mags well. Does dime sized five shot groups with the crow mags at twenty-five yards rested, when I do my part. It has not been tuned and is been giving service since 1986, when it was bought new. It does 820fps with the crow mags, according to my old Pact crony.
