Any way to quiet the pellets in a Sideshot mag? Mine sounds like a baby rattle!

 I have a Wildcat Mk3 and recently switched from 34 grain JSB King Heavy to 26 grain pellets. I like the performance so far, but apparently they are slightly shorter and now the pellets make an annoyingly loud sound every time I point the barrel up. Even worse, the spare mag in my pocket is a non stop baby rattle! Has anyone found a way to deal with this?