''I've never understood just exactly where that gap is supposed to be. The 22LR is perfect for point-blank shots out to, oh, 75-90 yards, depending on quarry. The 22mag is good for point-blank out to 175, maybe 200.
The HM2 makes somewhere around 150 ft-lbs KE. 22LR makes between 120 and 190ft-lbs or so. The 22Mag makes somewhere around 300 ft-lbs, or a bit more.''
Sorry Brian, but I agree with Mobuck & 9x19 when it comes to a genuine gap-filler between the .22lr & ,22mag.
Your figures for effective distance work fine on paper but in the real world, on game, the .22lr is a 75yd proposition , .17M2 - 120yd & the .22magnum - 160yd.
Yes, we have all stretched out & shot them all at greater distances on stationary targets but it doesn't take much wind to make that impractical, when hunting.
Every year, 5 of us travel to a station in Central Otago for a week of Rabbit
erradication, we are not just there for fun but to do a job of work for the owner.
.22lr & 17hmr are of no use, as 80,000 to 120,000 are shot there each year & the rabbits are too weary to sit any closer than 100yds or hunker down untill you almost on top of them. Wind off the Southern Alps, swirling in the gullies pushes the high velocity, light 17hmr bullets all over the place. We use 17MK2 ,.22MAG .222 & .223. & shotguns
Last trip, we took 1791 rabbits in 4 days.