Leshiy 2 low power .25 tune

Anyone running an L2 in .25 cal on a low power tune? (Around sub12 fpe) What tune do you find works ok for you? Can the dog bone & collar help in this scenario? Only interested in lower power tunes in this cal thanks, I’ve used other rifles in this cal & in this power range before on close range rats with great effect and find I get far less runners due to pass through etc