I just looked and I have been shooting Federal 1100 Black Pack 38gr. HP, and have not had a failure to fire in about a fourth of the bulk pack. Just shot a grey digger (Ca. ground squirrel) about an hour ago and it worked fine. I have quite a bit of .22 ammo, bought thru the years, and seldom have a misfire. Now, I did find a ziploc bag of about thirty rounds of the same looking Federal ammo, but very corroded and dirty, and had about thirty % misfires, but very old and not taken care of ammo.

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Kevin in Oregon