I have a S&W 67 that I like a lot, but sometimes I would like a little more horse power. Would it be safe to rechamber it to 357 Mag.?<!--emo&???--><img src="http://beartoothbullets.com/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'><!--endemo-->??