Making Hollow Points With a Case Trimmer

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Definitely an interesting idea.  I’d like to see the results in some ballistic gelatin.

The absence of a copper jacket, and the fact the hole isn’t perfectly centered makes me think it wouldn’t retain its weight very well (if at all).  I have no doubt it would expand like a banshee though.



cmblake6 January 1, 2010 at 11:31 am

I used to take my 44 Spl rounds for my Bulldog and cut them crossways with a hacksaw. 4 prong bullets. Wadcutter and 4 separate projectiles on impact.


Admin (Mike) January 1, 2010 at 12:53 pm

Cool, i think those are called “Dum-Dum bullets” right?


Josh January 1, 2010 at 01:12 pm

A “dum-dum” bullet is any expanding bullet. A commercial hollow point would be considered a “dum-dum” bullet. It’s essentially any bullet whose lead core is exposed (not completely covered by a metal jacket).


Admin (Mike) January 1, 2010 at 01:19 pm

Interesting links, thanks Josh.


Josh January 1, 2010 at 01:20 pm

This site contains the results of tests done with different rounds by making X’s in them as described by cmblake6. The conclusions reached on page 4 by the author indicate it’s largely a waste of time and you’re better off just using jacketed hollow point ammunition. Ball ammunition modified in this manner seems to be only slightly more effective than the unmodified round.


Admin (Mike) January 1, 2010 at 01:34 pm

I love box-o-truth! Talk about fragmentation on those dum-dums… Some of those rounds are in like 15 pieces!


lilbear68 January 4, 2010 at 10:19 pm

drilling a larger hole (.22) in a hp bullet like .357 or .44 mag will work good if you fill the cavity with a liquid like water or oil and then put a gas check in the hole to retain the liquid. it works explosively as long as you weigh the projectile and load accordingly


Admin (Mike) January 4, 2010 at 11:34 pm

That’s a neat idea. I bet it would do some serious damage.

What do you mean by “put a gas check in the hole”? What is a gas check?



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