I am interested in anyone's experience in pushing PC bullets very fast, in this case, say over 2000-2200 fps and higher and if you have seen any deposition of material (lead or powder coat material) in the bore. I have been playing with a few calibers (375 H&H, 375 Winchester, 348 Winchester and most recently the 405 Winchester) with bullets on the lighter end of the scale for those calibers and driving them at higher velocity. To date I have not seen breakdown of the PC or any indication of leading.
I know a few members have commented about pushing their PC bullets to higher speeds and would be interested in feedback. I know accuracy is a different issue and often times lead bullets can be less accurate at higher speeds but do they foul the barrel? Theoretically I would guess there is a limit to the PC before breakdown, but my experiments to date have not show any issues up to almost 3000fps.
I would appreciate any insight from the members on their experiences. Thanks in advance,
Paul