Question: what are the different size rifles?
Answer: .172. 17HMR. 17 Hornet. 17 Remington Fireball. ... 
.224 / 5.56mm. 22 Hornet. 22 K Hornet. 218 Bee. ... 
.264 / 6.5mm. 6.5mm x 52 Mannlicher-Carcano. 6.5×54 Mannlicher-Schoenauer. 6.5mm BR. ... 
.308 / 7.62mm. 30-30 Winchester. 30-40 Krag. 300 Savage. ... 
.338. 338 Federal. 338 Ruger Compact Magnum. 338-06. ... 
.375. 376 Steyr. 375 H&H Magnum. 375 Weatherby Magnum.