Just like rifle stances, the key is eliminating muscle movement and trying to build a solid support. Typically, in free hand positions you must create bone structure support. If your elbows are bent, you're relying on muscles to control the position of the gun (and its sights) rather than building bone structure support (such as having elbows locked out).Ill give that a try. many years ago I was told to keep my elbows bent to use my arms as shock absorbers.
thanks
It can be a bit of an adjustment for people used to shooting another method, but typically if they keep at it they improve. I remember when I first started with pistols I couldn't hit from any form of the weaver stance (elbows bent). I can now, but not nearly as easily/accurately. Good luck, glad to help.