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Normal Topic Throat erosion (Read 2405 times)
Larry D
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Throat erosion
Jun 14th, 2015 at 4:53pm
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What sort of throat erosion can be expected in a 32-40 using fast burning pistol powder?

Larry Smiley
  
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Schuetzendave
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Re: Throat erosion
Reply #1 - Jun 14th, 2015 at 5:43pm
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Have shot 30,000 to 60,000 205 grain to 235 grain .32 caliber rounds @ 1,350 fps to 1,526  fps in each of three rifles using 11.5 grains to 13.1 grains AA #9, H108 or WC820 without any sign of throat erosion when viewed with a bore scope.

Rifles were: .32 RKS Meachem Hoch, .32 RKS 1885 Winchester High Wall, and .32 RKS Miller DeHass with RKS stainless steel barrels.
« Last Edit: Jun 14th, 2015 at 5:49pm by Schuetzendave »  
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Re: Throat erosion
Reply #2 - Jun 15th, 2015 at 7:06am
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Same as Dave many thousands of rounds no erosion.   

On the other hand I have "worn out" Several modern .30 cal barrels shooting Silhouette. Have a couple take offs with no rifling at all first few inches. In fact reason few use . 243 in Silhouette is you can't get a season out of a barrel.

Plain base lead bullet probably impossible to wear one out.

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Larry D
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Re: Throat erosion
Reply #3 - Jun 15th, 2015 at 11:35am
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Thanks guys, thought that would be the case. I have always shot 6ppc, 6br, 6xc. Those have always been a concern.

Thanks
Larry
  
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