That is the awesome benefit of having a sub-caliber training analogue of your primary weapon systems. I didn't have a whole lot of .223 laying around, and I can't afford to go out and get a couple hundred rounds to burn off. Thankfully I have a few bricks of .22lr handy, and the little Smith & Wesson rifle is set up darn close to my go-to full-size rifle. Still got valuable training, and didn't have to spend a lot of money.
Cro, on the other hand, has stockpiled it for years, and he's breaking in a new BCM rifle.
My feet are still cold.