One of the disadvantages of Krytox I've read is you can't remove it completely without Dupont's special (expensive) solvent. As far as lube getting in front of the piston seal I've only had it happen with a worn piston seal. A new seal stopped the dieseling. The spring in this instance was lubed with bearing grease.
Thanks Ron,I suggest you shoot it some more to see if the velocity is stable. Over time (as the grease settles in a new equilibrium after so many shot cycles) and at high/low temperatures. Certainly, losing 12 FPS seems trivial, as many springers vary by more than that shot-to-shot.About how much grease did you use, in teaspoons, Cubic inches, or ml?
ThanksClipping the spring will have the effect of increasing guide to spring ID interference (the greater spring preload, the larger spring ID). Of you could make a larger guide... Depends on your goal for FPE. 16+ FPE sounds enough to lose one...
Yes, clipping one coil won't change spring ID significantly, Ron. Nor reduce the stored energy in the whole spring significantly. However, clipping that little may shift the resonant frequency or phasing of whatever portion of the spring is vibrating offensively.