The Firing Line Forums - View Single Post - Stainless Steel Barrel Life, 1 MOA @ 400 yards

Bart B. · December 22, 2019, 08:36 PM

Nick, the powder heat index plays a role too. Hotter burning powders cause faster wear rates than cooler ones. A guy on Accurate Shooter forum modified my formula to make a correction:

https://www.accurateshooter.com/tech...l-barrel-life/

The above link mentions some benchrest barrels are considered worn out when they no longer shoot groups in the ones; under 2/10ths inch/MOA at 100 yards. Yet several-group aggregate records include some groups larger than 2/10ths inch. His standard could mean no groups in the ones are no longer shot regardless of the largest one's size.

Here's a different approach:

https://www.accurateshooter.com/tech...ed-by-formula/

December 22, 2019, 08:36 PM	#15
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	Nick, the powder heat index plays a role too. Hotter burning powders cause faster wear rates than cooler ones. A guy on Accurate Shooter forum modified my formula to make a correction: https://www.accurateshooter.com/tech...l-barrel-life/ The above link mentions some benchrest barrels are considered worn out when they no longer shoot groups in the ones; under 2/10ths inch/MOA at 100 yards. Yet several-group aggregate records include some groups larger than 2/10ths inch. His standard could mean no groups in the ones are no longer shot regardless of the largest one's size. Here's a different approach: https://www.accurateshooter.com/tech...ed-by-formula/ Last edited by Bart B.; December 23, 2019 at 09:51 AM.