Originally Posted by zack0923
Another quick question, is it bad to keep the gun cocked and open with the lock through it or no because a friend told me it was but then what else would the lock be for?
Your gun lock is directed at two groups: Children and Lawyers
For the most part the lock that comes with the gun is pretty useless.
Your XD should handle damn near any competently loaded 9x19 (para, luger, nato, etc) ammo. It'll deal with the Russian stuff just fine, but there are potential long term issues. It'll handle Walmart's cheapest Federal/Winchester just fine too, which is what most of us select.
Shoot whatever brand you want, and do a respectable job cleaning your firearm. That'll serve you quite well with an XD9. And buy a box or two of decent JHPs for defense. I like Winchester Rangers, and I prefer the 124-127gr variety. YMMV, and there are a ton of other great choices for defense ammo.