I am in need of refilling my new magazines solely for home defense situations. What SD/HD 9mm ammo can you recommend that will do the job? The reason why I wanted to go for lesser cost is because it will allow me to afford practicing that exact load at the range more often. I wish I could shoot a box of Winchester Ranger 127gr +P+ at end of each session but its not ideal financially. For indoor situations, would a higher grain or lower grain be more ideal?