My neighbor was working up a gallery load for a 7.65 Argentine with a 115g commercial 32-20 FN.He started at 2.5 of Unique and when he was down to about 1.5g when he lodged this bullet 10” into the rifling and had to drive it out.It was interesting to see the trough the powder had cut onto the side of the bullet and melted the nose.The 1891 Argentine throats were like jumping the Grand Canyon for this bullet and i assume that when the offending gas got by?
George
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Wow!
Once again, one picture is worth a thousands words.
That is one of the best examples of gas cutting I have ever seen.
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could you post a before picture of the bullet? I'd like to see the difference in the base.
I was considering doing this same project for a .30/06.
thanks,
Bill
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It appears from the angle of the cut that the gas may have channeled in the rifling cutting across the bullet. I have never seen such a deep groove. Was there any indication of leading in the barrel as a result of this?? A picture comparing the fired bullet and an unfired bullet, especially the bases would be interesting to see.
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could you post a before picture of the bullet? I'd like to see the difference in the base.
Bill I was thinking the same thing.
I have nothing against bevel bases as several of my better shooting boolits have them. Was wondering if it (possibly) had any contributing effect.
Again, a picture is worth a thousand speculations. Thanks for posting this.
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wow that is interesting it is the first time i have ever seen gas cutting like that. i think you are right long throat is the real problem. joe gifford
if you think you have it figured out then you just dont understand
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I'll get a before bullet picture and one fired with 2.0 that was normal for comparison tonight. I will also measure them to see if it “bumped” up or not compared to the higher charge.
george
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cutting was on the groove section of the rifling.
George
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I thought as much on the groove. Picture should prove to be quite informative.
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neighbor worked late tonight so i didn't get to his shop.Gas cut bullet was still .311,same as before it was fired.I looked close with a magnifier where the cutting started and thought it may have been a void in the casting that let the gas by,but couldn't see any sign of it.
another pic of bullet from different angle
George
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wow, that is one way to melt lead! never saw anything like that, am glad for this info, as said, one picture, etc. really enjoy these findings, thanks frank l jr
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Is it possible that the gas cutting occurred due to the bullet stopping in the barrel? Once it stops the gas has to have somewhere to go, right? I might be all wet, but it's just a thought...
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Got an unfired bullet and one shot ith 2g of powder that came out fine.Diameter was .311 not the .314 i had thought.All bullets same diameter.
George
left-------------cut bullet
middle---------2.0 charge fired
right------------unfired.
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That is really neat. Now, can it be reproduced? Or if not was it a fault in the bullet? Ric
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That is really neat. Now, can it be reproduced? Or if not was it a fault in the bullet? Ric
I am going to try to reproduce it.Wish i knew the anwser.Where in F.W. Mann when you need him?
George
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I think he's burried in NY.
Is there any evidence the bullet did not enter the throat straight?
Great respect for Dr. Mann's volume of research.
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sluggo
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Eddie Southgate
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Capt. Moroni Hunt
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