| Rule303 |
| (.416 member) |
| 14/10/19 09:32 AM |
Re: OSR, Double Damage and Barnes' Response
|
Quote:Quote:
This doesn't seem to happen with monometal bullets equipped with stress relief grooves, and following the hypothesis above, they simply do not cause high pressures of examples with no stress grooves......
I wouldn't rely on "grooves" in the full calibre width of the bullet one little bit. Instead the best monometal bullet examples have RAISED bands with the 'shank' being sub calibre. The rifling can groove the rainsed bands without excessive pressure or displacement. The grooves hardly change it at all. My hypothesis.
Interesting you observed the OSR on a bolt action Weatherby. Usually the reports of it are on much thinner barrelled multi barrel firearms.
John I read an article from Barnes when they first brought out the banded bullets. It claimed the groves were cut into the full sized-grove sized - bullet to allow the displaced material from the lands to fill into. Like you I would have no real confidence in this.
I must add that I can not remember moist of that article so it may well have gone on to say that was a trail only set up. Can anybody tell me if the current Barnes X bullets are bore riders or full size.