For those shooting 50 BMG target rifles, what kind of barrel life are you getting. I would like to know what brand and twist barrel with which powder and what bullet.

Way, way, way too wide open. Because of the dramatically larger size of the .50 BMG cartridge, its a whole new world. Most folks on this and most other shooting forums are shooting well under .50 BMG. Suggest that you become a member of FCSA and then get on the Members Only Forum - http://fcsa.org/members/ Actually, you may be able to get access without membership...but get called for not being a member. They also have a sub-forum for those new to 50s, called, amazingly, "New to Fifties".

I did not find any significant differences in the 50 BMGs barrel life. the bullet weight to powder and velocity is not that much different from other cartridges. Heat is the only real difference because of the amount of powder used and would be my concern. J E CUSTOM

Since it’s basically a scaled up 30-06, probably very similar to the barrel life of a typical 30-06 would be what I’d imagine.

The math would indicate differently, so I'm posting it up for consideration. Cartridge overbore index ratio comparison: Cartridge Case capacity bore area overbore ratio 26 Nosler 99 .05723 1730 28 Nosler 99 .06261 1581 50BMG 300 .20093 1493 7/300 WM 92 .06261 1470 300 Norma 104 .07335 1418 30 Nosler 97 .07335 1322 300 WM 94 .07335 1282 338 LM 113 .08813 1282 30-06 68 .07335 927 Search cartridge overbore calculation for more. To find your cartridge's overbore index ratio: (Not sure why I'm typing this, no one will probably do it.. it's MATH!! LOL!) Measure the water volume in grains of a fired case from your rifle, or if already known, (google is your friend, Chuck hawk's lists some common capacities) use that value. If the caliber of your cartridge happens to be one of the above, use the number under the heading "bore area" for your caliber. If you've got this number, you can skip to the bottom. *** If not, Whip out your calculator, or app on your phone. Use the diameter of your bore to find the radius of your bore. R=D/2 (so divide the diameter of your bore by 2, resulting number is the radius of your bore.) Then use the formula for area of a circle to find the bore area, which is A=pi x (RxR) Spoken, this formula is stated: Area equals pi R squared First multiply your bore radius times itself, multiply that times pi, the product is the area of your bore. *** Now, divide the case capacity number by the area number. The quotient is your overbore index ratio.