My friend and I went to the range today, Both experianced with firearms. I went to walmart and bought 2 of the hundred round Remington value packs(JHP) and he went to Dicks and bought 2 150 round value packs of ultramax. We had my XD45 Service, and his 1911. Neither had a bit of problem chewing up and spitting out the Remington ammo. But the Ultramax, was terrible multiple FTE and the nastiest ammo I have ever seen, smoked like a Blackpowder pistol and left debris all over our arms, I will definatly be doing a deep cleaning on My XD and my mags tonight before bed.