New to the forum and pistols. I use a XD 9mm. Shot a few rounds of Remmington 118gr. and I think it was 148gr box purchased from the local shooting range. Had one of the 188gr. jam the gun. Wondering now if higher gr. ammo is necessary or if the this was a fluke. Also wondering if there is an offical ammo spec listed some place? The forum has an entry regarding NOT to use a certain brand. Any URLs for XD 9mm specs?