Will that be a major improvement in barrel life as a focus on HP projectiles or niche thing among a small % of shooters? Extreme twist rates and new materials, etc, supposedly takes gain twist to the next level of performance and barrel life:
Lengthy discussion. Not a new tech per se (progressive twist) but use of materials and designs with rifle calibers may bring something new to the scene, promises of 40-60% increased barrel life or greater and other benefits.
In all reality, we’ve never found barrel life to be an issue at all. Maybe benchrest lunatics who have to have an absurd level of accuracy change barrels every 2k or so. But we’ve never had a gun that we felt needed to have a barrel replaced due to legit long term wear.
Increased life is great, but the increased cost has to be less. Otherwise it is a wash.
Now with more high pressure cartridges on the horizon the gain twist might go a long way to improving safety margins in bolt/lug shear forces and save some case heads by reducing the duration of peak chamber pressure since the bullet is able to more easily start down a barrel with much less resistance from rifling twist.
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Years ago when developing the M256 cannon the Army found that at maximum speeds rifeling actually slowed the round down and made it less accurate.
I will assume we are talking obout massive differences in the speed of the projectile, but I wonder when this takes over in rifles as it did with tank cannons and ammo.