I want to buy a rim-fire rifle, but cannot chose! It's the same rifle, but I can take it in either caliber.
A little background:
So in your opinion, which one should be my choice for small game? One of the concerns are wind drift, accuracy and trajectory.

Another important question is meat damage, for example if I shoot a rabbit.

A little background:
.22 WMR
.22 Winchester Magnum Rimfire, is a rimfire rifle cartridge, commonly loaded with a 40 grain bullet, it can deliver velocities in the 2000 fps. range from a rifle barrel. The .22 WMR was introduced in the 1950s by Winchester, and it was the only successful rimfire cartridge introduced in the 20th century. The .22 WMR uses a larger case than the more popular .22 Long Rifle rimfire, both in diameter and length. The .22 WMR's case is also much thicker, allowing much higher pressures. Since the .22 WMR generally uses the same weight bullets as the .22 Long Rifle, it is generally used in similar situations. The 40 grain .22 WMR at 100 yards still retains the velocity of a .22 LR at the muzzle, which can provide improved penetration at all ranges, and more reliable expansion at long range with expanding bullets.
Specifications:
Case length: 1.052 in.
Overall length: 1.350 in.
Bullet diameter: .224 in.
Bullet weight - 40 gr.
Velocity - 2,020 fps.
Energy - 360 ft.lb.
.17 HMR
.17 Hornady Magnum Rimfire, is a rimfire rifle cartridge descended from the .22 Magnum rimfire. It was developed by necking down the .22 Magnum case to take a .17 caliber bullet. Commonly loaded with a 17 grain bullet, it can deliver muzzle velocities in excess of 2550 fps. It is widely considered to be the one of the most accurate of the rimfire cartridges.
Specifications:
Parent case .22 WMR
Bullet diameter .172 in.
Neck diameter .190 in.
Shoulder diameter .238 in.
Base diameter .238 in.
Rim diameter .286 in.
Case length 1.058 in.
Overall length 1.349 in.
Bullet weight - 17 gr. / Velocity - 2,550 fps. / Energy - 245 ft.lb
Bullet weight - 20 gr. / Velocity - 2,350 fps. / Energy - 250 ft.lb.
So in your opinion, which one should be my choice for small game? One of the concerns are wind drift, accuracy and trajectory.

Another important question is meat damage, for example if I shoot a rabbit.

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