Shooting standers is what I do. There are techniques and disciplines you can learn that will be transportable from rifle to rifle, but you will only get the best result by using just the one rifle.
What practice with any other rifle will do for you is to give you confidence when you come to shoot standers in FT or HFT.
Here's a practice card of mine, ten shots at 20 yards, standing, 22 cal S410 carbine using JSB 5.51 pellets.
What's important is the group size, not the zeroing.