Originally Posted by
Abasmajor
Hello Pete,
I'm not really sure what BSA originally quoted for muzzle energy on the BSA Magnum, but anything near 4 ft/lbs is good enough for me at my normal pistol range of 10 metres. I have chronographed my Birmingham and Turkish made .22 Tempests and they both produce around the 3.5 ft/lbs mark which I think is about right.
Regards
Brian