Well Larspawn, you wanted discussion, and you got discussion. Personally I stick to the average weight pellets. Nothing too light nor too heavy. Mostly due to lack of availabilty of pellets in my area. However, to actually test the idea that too llight/too heavy pellets cause premature spring failures would reguire a test platform that I doubt most individuals or companies would be willing to invest time or money on.
It would require a test of a number of springs all produced from the same wire, under the same conditiions. Then these springs would have to all be stressed under the same forces that could be measured until failure occures. All of the testing would require a careful accounting to insure the same number of compressions and expansiions. Even the same temperatures etc. This type of testing is not practcal for home gamers. All aspects would have to be known and measureable.
It is doubtful that the average air gunner would ever be able to obtain 2 or more springs from the same batch. Then install them in 2 or more seperate air guns. Then count the exact number of times the gun was cocked and fired and with what pellets. And do this until failure.
This being said, I feel that the hyper light pellets are just, that hype. I tried a few and put them away. If I ever find some 10 grain pellets I may give them a try. Besides, springs are like everything else mechanical that is in motion...eventually they will fatigue and they will break.
