What rifle do you shoot the most?

.22s mostly semi-auto, but the one bolt-action is probably my favorite for relaxation.

.357 Marlin 1894. Enough bang for me to find fun, but less reloading hassle than a bottleneck rifle cartridge. It also doesn't throw my brass halfway across the range if I work the lever gently. Good economy with reloads, and I can use them in my revolvers too. I don't doubt the value of .22-caliber practice, but I find it boring.

In volume, I shoot more 223 Rem. than anything else. While I have a couple of ARs in 223, the rifle that always goes to the range is a Savage model 12 in 223 that shoots very small groups at 200 yards with my hand loads.