Chambering Problems

[Dwight Gruber]

</font><blockquote><font size="1" face="Verdana,Tahoma,Arial,Helvetica,Geneva">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">Originally posted by unspellable:
<strong>One of the experimental versions was a straight sided case with a very slight bottle neck. Your comments make me wonder if they just continued to use the bottle necked reamer forever after.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">Unsp.,

The chamber is not really bottlenecked. As you can see in the blueprint, it really is a cylinder from the breech, 9.85mm diameter; the step is an abrupt reduction to 9.75mm, with a slight taper to 9.7mm at the chamber mouth.

One wonders why they did that, and if the chamber was reamed with one reamer, or if it was done in two stages.

I have noted that in some of my Lugers the step is very pronounced and strong, and in others it is hard to see and isn't completely circumferential. Don't know if this is a result of wear or manufacturing practice, I have a hard time believing that inspectors would let this pass...

--Dwight