I paid closer attention today, and of course it may be different for you, but no glitches at all with Estate 1 oz, 1180 fps. Have also shot up some of the 1 1/8 oz and pretty good amount of Fiochi 1 oz lately. If you were still looking for an inexpensive, easy to come by shell. Made in the US on the box so I'd assume Federals, so if you try them, maybe keep that in mind just in case they disappoint.