Thought I would chime in here, I was just comparing the original 13.4’s that I’ve used for my 25m guns for all my matches,1-yr earlier tests showed slightly better accuracy in both LW poly barrels, tonight came across those Redesigned 13.4’s again and thought what the heck have another go!, so set up for testing @ 30yds w 25m br targets pretty much the same results... then I chronographed both ( original/Redesigned ) found that the Redesigned were consistently shooting 25fps slower? So quickly went to hammer spring tension adj., picked velocity up to 810fps ( 20ftlbs) looks really good!, I have a match this coming wknd so if I can test more to confirm these initial results I will use them this weekend and will post my scores! I don’t know of anybody actually competing with these?, so can only assume they don’t even come close to originals overall! But if anyone has any experience using these in comp. let me know, thanks, Joe