Is there any way by any method to add capacity to my 116 300 Winny. I don't like carrying 3+1 so a few more rounds in her belly would be beneficial. According to the Serial# F508680 it is a 1995 vintage composite stock, stainless plain Jane blind mag TBR. Also, one of my screws that hold the stock to the action somehow rattled out in my saddle scabbard. It is the one just in front of the trigger guard. How would I go about finding one of these?

Thank you in advance!