9mm 147gr verses (3) water jugs, with drilled out hollow point silicone filled

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The 147 gr hst is designed to expand at subsonic levels. Perhaps the bullet you shot that you drilled out isn’t suppose to expand at all. Ammo manufacturers have a special mixture they use in bullet making that helps them to expand/not expand so they control what they want the projectile to do.
 
The 147 gr hst is designed to expand at subsonic levels. Perhaps the bullet you shot that you drilled out isn’t suppose to expand at all. Ammo manufacturers have a special mixture they use in bullet making that helps them to expand/not expand so they control what they want the projectile to do.
i bet the lead is softer then the basic plated one i used and a real hollow point they have cuts in the brass to help it fold back and the brass acts as a wall to control the expansion
 
Yes lead in hollow points bullets is softer to a degree to aid in expansion. Also like you mentioned they have serrations to help the jacket “peel back”. I’m not sure what all is mixed with lead because pure lead is way to soft. I think tin and antimony is added to help control expansion so it doesn’t over expand and compromise penetration while still giving good expansion.
 
Lead in plated bullets I’d usually pretty soft.
How did you determine there’s was no expansion when the bullet wasn’t recovered?

With jacketed hollow point bullets I think the jacket composition, size of HP, the perforations in the jacket all determine when and how much the bullet expands. Drilling into a plated bullet is a neat experiment, but doesn’t replicate factory ammo.
 
Lead in plated bullets I’d usually pretty soft.
How did you determine there’s was no expansion when the bullet wasn’t recovered?

With jacketed hollow point bullets I think the jacket composition, size of HP, the perforations in the jacket all determine when and how much the bullet expands. Drilling into a plated bullet is a neat experiment, but doesn’t replicate factory ammo.
The entrance and exit of the 3rd jug holes were 9mm size when I look at in closly
 
Cast lead is generally a lot harder than the soft lead in a jacketed bullet. Even going to Brinell 10 I was unable to get any expansion in 124 gr 9mm Lee cast bullets using the Forster Hollow Pointer tool. Of course, I might have been doing it wrong, too.
 
Interesting experiment, but I wonder what the bullet actually weighed since you drilled out part of the heavy (copper and lead) material and replaced it with a lighter material (silicone). I'm sure it didn't weigh the original 147 grains.
 
Interesting experiment, but I wonder what the bullet actually weighed since you drilled out part of the heavy (copper and lead) material and replaced it with a lighter material (silicone). I'm sure it didn't weigh the original 147 grains.
this new one to the left is about 132 grain DSCN0001.jpg after sanding a lot of the brass jacket down it was thicker then i thought and i trim down the bullet nose some another test comming soon:evil:
 
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