Problem with 10mm OAL

[Bush Pilot]

I've been working up some loads for my various 10mm semi-autos (Glocks 20/29, S & W 1006/1076) and 2 different EAA Witness models. The bullet is a 180 gr Extreme with an OAL of 1.244". The loaded rounds load in the Glock and Smith mags like a million bucks, not so the Witness mags. The first 3 go in just fine, #4 does something and the mag spring tension goes away leaving the loaded rounds not to stay in place. I tried loading a second Witness magazine with the same results. I couldn't see any burr or anything down in the magazine body that looked out of place.

This is driving me nuts, I don't want to have to baby some ammo for the Witness. Has anyone else ever come across this problem?

 

[rfwobbly]

...the mag spring tension goes away leaving the loaded rounds not to stay in place.

If you mean that the ammo in the mag starts to rattle around like a loose bolt inside the mag, then that is completely normal. It will not hurt the ammo or the firing of the gun. The gun is completely reliable.

 

[Bush Pilot]

This isn't normal IMO. I can't figure out why it would do it on the Witness and not Glocks or Smiths. I thought maybe the OAL was a bit long (within specs) I played around by seating the bullet slightly deeper, it didn't help.

 

[rfwobbly]

Heck, that's not a problem. That's a "feature" !!

That's how you tell the full mags from the empty ones.


It does it on all the CZ pistols as well. We call it the "CZ rattle".