Р351
НАБИВАТЬ/НАБИТЬ РУКУ (в чем, на чём)
collVPsubj:
humanmore often
pfv ) to become skillful, experienced in
sth. : X набил руку в Y-e = X got the knack (the hang) of YX got a grasp (a handle, a grip) on YX became versed in YX caught on(in limited contexts) X learned his trade.