Hey everyone, I am thinking about a future rifle project chambered in the 22 BR. I have a few questions. What is the estimated barrel life of a 22 BR shooting the 40 - 55 grn bullets? Any draw backs to this little fast round? I am thinking varminting primarily with this round in the 100 yard to 500 yard ranges. Also target shooting up to 500 yards. Would this be a good round for mid to high volume shooting? If not this round, any other suggestions? Basically I am trying to come up with a 3400+ FPS mid to high volume shooter. Accuracy is top on the list. I am also looking for a round that is good on barrels (4000+ rounds of accuracy). Primarily a varmint/target rifle. Low recoil is also a must. I am not blast nor recoil shy, but the primary shooter of this rifle is, so any rounds that fit the criteria? Does not have to be a 22 cal. Thanks for any help!