If I swap a barrel in .22 for an identical length barrel in .177, on the same rifle, is there a known percentage that the power will be lower from the lower efficiency?
Sub 12 ft lbs, 250mm barrel, everything else is identical (Edgun Leshiy).
If it’s 11.5 in .22 and still kicks out over 10 in .177 I’ll be happy. Thanks in advance.