New to air gunning and trying to learn a little and I have a couple of probably dumb questions, so here goes. Do air rifles have a break in period? Do different brands/models of air rifles shoot better or more accurate when using a certain pellet? I just bought an Umarex Octane .177 and was surprised and a bit overwhelmed when I had to choose which ammo to buy. So I was wondering if anyone else owned the same rifle they could share their choice in ammo. Or are all rifles different and will I have to try different pellets to see which shoots best out of my rifle? BTW - I mainly just shoot targets . Thank you for your time.