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17 Ιαν 2023 · Rifle barrel life in perspective. A 308win cartridge will burn circa 42grains of powder for a 30 caliber bullet. A 300 Norma is burning 90 grains of powder for the same 30 cal. bullet. A 338 Lapua burns circa 90grains of powder under a larger .338 bullet.
23 Ιουν 2020 · In order to determine the accurate barrel life of a rifle, we can use a barrel life calculator. The most widely used barrel life calculator on the web today is known as Mike’s Spreadsheet , which uses five variables to provide a good accurate barrel life estimation.
Loaded Powder (Type Propellant Charge) grains. Select Propellant Brand
10 Αυγ 2013 · A factory sporting rifle starting out at 1/2 MOA at 100 yards may show twice the barrel life; about 6000 rounds for a .308 Win, .222 Rem or about 2300 rounds for a .308 Norma Mag. M14 and M16 service rifles as well as the M1 had barrel lifes 3 times as long; 9000 rounds or more based on a 1 to 2 MOA accuracy level at 100 yards.
21 Οκτ 2008 · Mike’s program predicts barrel life using five variables: 1) Bullet Diameter; 2) Powder Charge weight; 3) Powder Heat Potential (KJ/kg); 4) Pressure (in psi); and 5) Bullet Coating (yes/no). Mike provides a table with Heat Potential ratings for most popular powder types.
23 Ιαν 2024 · Here's a step-by-step guide on using a barrel life calculator: Input Total Rounds Fired: Enter the total number of rounds you've fired through the barrel of your firearm. Input Powder Charge: Specify the average powder charge used in each round.
30 Ιαν 2020 · The best life can be expected from the 22 long rifle (.22 LR) barrels with 5000-10,000 accurate rounds to be expected. We have in our shop one our drop-in Anschutz barrels that has 200,000 rounds through it and the shooter, a competitive small-bore shooter reported that it had just quit shooting.
