I now have a pretty good collection of 1950 - 1990 British air rifles. It seems to me the ones I have from the 50’s 60’s seem to be around 10 FPE? Webley Mk3, BSA Airsporter. I assume when the 12 FPE rule was enacted it was thought that British Manufacturers would easily be well under this limit? Did that limit actually cause the manufacturers to try to increase power up to it?