Thought I’d share this experience.
I have some .38 caliber rubber bullets. I think Speer made them but not sure. I’ve had them a long time. Made from a tough “O-ring” type synthetic rubber and shaped like a .177 lead pellet.
Used a modified primer flash hole as previously suggested and a standard primer.
Loaded some up to practice indoor point shooting. Worked quite well. Except I found out the hard way that they will penetrate a hollow core interior door!
Take ‘em seriously and be mindful of your backstop!
I never messed with the wax bullets, but did try some of the rubber bullets. It was fun at the time, but now, with the cost of primers being what it is, I just load powder and lead in the cases.
On a side note, I painted the case heads red to distinguish the drilled out primer pockets.
I say if you want to try the wax bullets, give it a go.
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