Unfortunatelly, Higginson is out of WSP to. That's where I usually buy them.
So far, from what I have been told, that doesn't seem to make any difference at all. I'll probably buy a 1000 first, chrono them and see if it makes any difference. If not, I'll probably buy a few untill I can find some WSP pimers again.
Thanks for your help guys,
JP.