I sent a 44 mag lowwall off to a 'smith to be rechambered and rebored to 50AE. While the barrel was in Mr. Dick Nickel's shop, he unexpectedly and unfortunally passed away. My 'smith, after about 6 months, found someone else to do the rebore. This gentleman did an excellent job - no tight or loose areas,and very smooth when looked into with a borescope. One problem- he rebored it to .510 (the usual "50" caliber) instead of the correct .500 for the 50AE. Can my RCBS mould be "opened" slightly to cast larger? Does anyone make a .510 that will cast a 300 to 400gr useful in a 50AE? Will the round chamber with a .510 bullet seated? (Speer gold dot 325 jacketed when "bumped up" with max loads of H-110 stablize out to 100yds- so I can at least use the barrel. My .501 Rcbs 350gr cast are end over end at 25. <!--emo&--><img src="http://beartoothbullets.com/iB_html/non-cgi/emoticons/sad.gif" border="0" valign="absmiddle" alt=''><!--endemo--> ) Any help is appreciated!