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Old December 10, 2019, 11:02 AM   #10
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Join Date: July 15, 2016
Location: Florida
Posts: 179
Originally Posted by Bart B. View Post
The top ranked competitive shooters using AR15 rifles in 223 rebarrel about every 3000 rounds. Ditto for benchresters shooting 22 caliber cartridges the same size as the 223 Remington.

All barrels will eventually shoot a given load's bullets a bit slower and require more sight elevation at longer ranges. Accuracy also degrades and at some point no longer meets some standards. The cause is not gas leak but instead less resistance to bullets entering the chamber throat and bullets increased jump to the throat as it erodes .001" down the barrel every few dozen shots.
That's interesting thank you.
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