A typical rifle barrel is worn out in 5-10 seconds of use
This is a discussion on A typical rifle barrel is worn out in 5-10 seconds of use within the Accuracy forums, part of the M14 M1A Forum category; Very interesting.
Article says a .308 barrel is often good for 5000 rounds. At 168 grain per round, that comes out to 120 pounds of bullets doing down the barrel in 10 seconds. That is a lot lead to shove through that little hole in ten seconds!
Weird way to look at it. But it is interesting. Maybe you guys that reload can calculate how many pounds of powder goes off in that 10 seconds to do the shoving.
A grain is equal to 0.000142857 pounds. Multiply that by your load times 5000.
Hmmm. That has got to be a pretty big bang!
Kind of reminds me of what my engineer dad used to explain. If a Cadillac got 15 miles to the gallon, you could theoretically shoot it out of a cannon with one gallon of gas as the propellant and it would go 15 miles. That is the amount of power in one gallon of gas. And it does not matter if it pushes the car down the road at 35 mph for 15 miles, or launches it from a cannon. The work is the same to get the car from here to there. (Of course there are other efficiency issues and dynamics involved, be we are talking 'Theoretical' here.)
Article is basically telling the reader that accurate barrel life is equivalent to time the bore see the bullets travelling through it as another method of determining accurate barrel life, but expressed in time versus number of rounds. Such studies were conducted many years ago by the German arms mfg.'s for the Mauser Model 98 or it's variants. When I say many years ago, referring to a time period of pre WW I. Similar studies conducted on the various artillery weapons and barrel life, accuracy, etc. Actually Napoleon was a student of ballistics and known as an excellent mathematician which brought him to the attention of "superior officers" for his skill in directing fire and artillery deployment in battles. Good article and makes one think, but it hurts my head to think very much.