Bald-faced hornet Bald-faced hornet Dolichovespula maculata is a eusocial wasp of the cosmopolitan family Vespidae. Its colloquial names include the bald-faced hornet, bald hornet, white-faced hornet, white-tailed hornet, spruce wasp, blackjacket, and bull wasp. This species is a yellowjacket wasp, not a true hornet (genus "Vespa"). Colonies contain 400 to 700 workers, the largest recorded colony size in its genus, "Dolichovespula". It builds a characteristic large hanging paper nest up to 58 centimetres (23 in) in length. Workers aggressively defend their nest by repeatedly stinging invaders. "Dolichovespula maculata" is distributed throughout the United States and southern Canada, but is most common in
.17 Hornet fit an Ackley chamber without full-length resizing. Existing rifles chambered for the Ackley wildcat can have their barrels set back one turn and rechambered to the new .17 Hornady Hornet which meets the Sporting Arms and Ammunition Manufacturers' Institute (SAAMI) standard for the .17 Hornet. This fixes the bullet jump issue and improves ammunition availability with little risk of diminished performance. .17 Hornet The .17 Horneta is a .17 caliber centerfire rifle cartridge originally offered as a "wildcat cartridge" made by P.O. Ackley in the early 1950s. He created this non-factory (wildcat) offering by simply necking-down the .22 Hornet to