10 to 10.5 is probably best.
IF you get tested, and It's over 12ft lbs "LEGALLY" you are in possession of a modified firearm without authority which carries an 8-year prison sentence.
"LEGALLY" IF you were in possession of a rimfire or centrefire rifle, you are in possession of a firearm without authority which carries an 5-year prison sentence.
Very stupid considering the differences, BUT that is the law, and if there was some sort of political or usual anti gun campain / er at the time that's what YOU could get!
Just don't bend over to pick up the soap in the shower
I'd go mad, if I didn't have the devil on my shoulder to talk to.