Ask the Community
Get answers from fellow firearm enthusiasts and share your knowledge with the community.
.17 HMR is 17 caliber as the projectile is 0.17 inches in diameter.
Larry, As far as relationship goes .17 caliber is .05 smaller then a .22 caliber round.
Larry, .17 is the diameter of the bullet. .17 bullets compared to 22 bullet picture here : http://bulletin.accurateshooter.com/2013/01/winchesters-new-3000-fps-17-win-super-mag-rimfire/
A 17 HMR is a 22 WMR necked down to a 17 caliber bullet. It's typically 17 grains in weight. It is common to find 20 grain and 25 grain 17 HMR rounds for specific needs. The 17 HMR is a "laser" with flat trajectory. If you like the 17 HMR you might really like the 17 WSM; the most powerful rimfire round in the world. It is a rocket of a projectile and greatly outperforms it's little brother 17 HMR. But they both have a purpose. It was my pleasure to assist you. RIP Kobe Bryant.
