Federal Champion BYOB (Bring Your Own Bottle), 22 WMR, 50 Grain, Jacketed Hollow Point, 250 Round Bottle 757BTL250 There's a party at the range, so BYOB. Federal BYOB rimfire buckets and bottles are bulk packs that stack, store and carry easily. They're loaded with high-quality 17 HMR, 22 LR or 22 WMR rounds that are perfect for a fun day at the range or in the field. Shooters can remove the packs' lids completely or keep them on to use the easy-pour feature.