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Ammo Direct DPT


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  1. #11
    Member
    Join Date
    Dec 2012
    Location
    Lower Hutt
    Posts
    151
    Quote Originally Posted by gimp View Post
    They always claimed "HP and MPI tested" but it was disingenuous as it was only batch testing ie 1 from a batch of however many, which not as good of a QC test as individually testing each bolt (but cheaper!)
    I was under the impression that the HPT process was basically subjecting the bolt to a proof test, which also has the effect of potentially shortening the overall life of the bolt by quite a margin. I read that the US army found that bolts (even HPT/MPI tested) will begin to crack at 5,000 rounds, and will generally break at 10,000 rounds.

    If bolts tend to let go at the same time, I'm not sure if the benefits of HPT stack up, but interested in others views.
    Last edited by scaggly; 20-06-2014 at 09:23 AM. Reason: Damned phone

 

 

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