Good evening everyone,

Recently had my BSA Superten carbine stage 2 blueprinted by JB as its been sat in the cupboard for a few years unused. I Chrono'd it when i got it back and it was running around 11.25 ft/lbs with AA field 16grn. Thought id clean the barrel and iv run about 50 pellets through it and the power is now consistently running at 10.5 ft/lbs. Has anyone noticed a power drop after a barrel clean before its fully leaded up again? 10.5 ft/lbs is quite ample for me, just strange its dropped a bit.

Thanks for reading!

Tom.