Here’s a term you’ve likely heard thrown around a lot, lately: Barrel Life. We’re going to discuss what barrel life really means and how it works since it’s been coming up in articles lately. I want to make sure everyone has a good grasp of exactly what barrel life is. I want to make sure people understand what factors affect barrel life. Lastly I’d like to give some rules of thumb for lifespans of different calibers and what a person can reasonably expect for barrel life in those calibers.