Originally Posted by
Grouse45
Yes Pete, a sabot is a safety valve as well. But a bullet and sabot is a hell of a lot tighter then a powerbelt. A powerbelt doesn't get tight until the pressure under the gas check builds and makes the powerbelt obturate and engage the rifling leaving the bore. As far as I know, only lead bullets obturate. You take a Lehigh Brass bullet thats not happening at all. So the sabot blows and the gas leaks around the bullet.
Exactly. So, how can the PB skirt blow when the bullet is obturated in the bore?
I don't know why CVA puts the restriction on sabots. The heavy PB don't blow the skirt when shot, and the 444gr PB's are fine to shoot. Lots of guys use the 405gr for elk with zero problems. I shot a bunch of 460gr NoExcuses bullets in my old MR with no problems.
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