When the .17 HMR burst on the scene several years ago I was given the opportunity to spend some time with Ruger’s 77/17. I learned that at an appropriate range, with good wind conditions, varmints better beware. The rifle was so accurate and fun to shoot I bought it. I have no idea how many rounds have been put through it over the years, but a conservative guess would be around 5,000 or so.
Of late, much attention seems to be on “improving” the AR platform via cartridge enhancement. Combine this with the increasing use of suppressors and the stage is set for an AR chambered in a cartridge capable of supersonic and subsonic loadings. The .300 Blackout (BLK) is emerging as one of the most successful alternate chamberings.