It seems like not too many years ago there was real concern with picking cartridges that weren't going to shoot out barrels too quickly. But now we have the 6.5 PRC and 22 Creedmoor and no one seems to be complaining about barrel life. Are barrel materials better now, or was the original threat of shooting out barrels just overblown?
Marksman -
Howdy !
I think there are plenty of shooters that still pay attention to potential “ barrel life “, relative to the chambering that want to shoot; or already are shooting with.
Yeh…. barrels can be viewed as “ consumables “. But…having a custom barrel made along with having a machinist chamber/ thread it for you, is still a high-buck proposition; and covering the cost remains a “ push “ many shooters.
Varmint shooters campaigning smaller calibre high-intensity rifles a won’t necessarily go through barrels on the scale that high volume competition shooters do, yet they still know they’ll have to replace a barrel(s) at some point. As a result, many varmint shooters
may try to extend barrel life through measures like avoiding fast repeat shots.
Making enducated choices on powder selection, can only help. Avoiding use of powders that are proven to “ burn hotter “ than others within a certain “ burn rate “ span, should also help in prevention of excessively accelerated barrel erosion. Likewise, “ load pressure” is also a contributing factor to reduced barrel life. I often mention this quote from ballistician Homer Powley…. “ High pressure is high temperature, and therefore, faster erosion; it is as simple as that “. In that light, shooting with loads @ the max end of allowed chamber pressure is something a shooter should only do when cognizant of the potential negative impact to barrel life.
The increase in popularity/use of longer and heavier bullets in smaller calibers has played a role’ in achievable life ( IMHO ), because amongst other things… they can drive changing the powder burn rate selected, reduced charge weights ( compared to lighter bullets in the same calibre ); and likewise reduced muzzle velocity.
Another trend also advancing, is the acceptance and use of chamberings with 30* ( and even some sharper ) shoulder angles. These, along with adequate neck length, serve to keep the powder combustion “ turbulence point “ inside the case neck; and not out in the barrel / barrel lead.
Beyond all that: use a good bore guide, a good “ coated “ rod; and bore cleaning products that work.
With regards,
357Mag