Thread: Max fluting depth

Thanks for the reply's guys. Barrel is already 13ish inches and light as. But this is an experiment! @DPT safety is definitely my main priority for testing. Whilst this will be retired to subs only, I'll do some full power tests with a LONG piece of string tot eh trigger to take away any doubt. I'm thinking 20 rounds should be sufficient. I'm drawing it all up on CAD at the moment and will post pics soon.

Originally Posted by Tuckerbox

Thanks for the reply's guys. Barrel is already 13ish inches and light as. But this is an experiment! @DPT safety is definitely my main priority for testing. Whilst this will be retired to subs only, I'll do some full power tests with a LONG piece of string tot eh trigger to take away any doubt. I'm thinking 20 rounds should be sufficient. I'm drawing it all up on CAD at the moment and will post pics soon.

Can you slomo video as well please?

@marky123 unfortunately no means of slomo footage. Here are some drawings. A little more digging suggests Pac-Nor happily flute to within .150" or 3.8mm of the bore so I did drawings for both 5mm and 3.8 clearance. The square bottomed flutes look a little ridiculous on the 3.8mm clearance barrels. But I'm happy with the looks of the 3.8mm with 4.5mm ball end mill.