I only checked because I was looking at my spare barrel and remembered hearing about tight spots in barrels.
I have been thinking about it and I think that there is only a problem when using green pellets as the soft skirt will take up any slack with lead, my .22 80 barrel loses a fair bit of power when using green pellets as dose my Diana but my TX loses none so I am expecting the Diana to have a tight spot when I check it later and the TX to have no tight spots