</font><blockquote><font size="1" face="Verdana,Tahoma,Arial,Helvetica,Geneva">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva"> On the other hand a tapered reamer would be no great trick, so I don't think it would really be easier to make a stepped chamber. </font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">No, a tapered reamer would be no great trick... but straight reamers in various sizes would be a "standard" that could be produced more economically...where a specific taper reamer would be custom I think the design is based on the manufacturing tool cost... And if something isn't broken... don't try to fix it...