I am very interested in the SCATT shooter training system. But it looks like you must dry fire to use it. If so, I've heard that repeated dry fires can damage the firing pin on a rifle. I've also heard that dry firing is the only way some people can practice without going to the range when it's inconvenient, and they never had any problems at all. I know there are snap caps for dry firing purposes, but not in 6.5x47L. Will dry firing cause any damage?