Not many been there in the R22, ...but my suggestion is this...
DONT GO THERE!!
Much easier to take out any .45 Smith & Wesson load 5 flatnosed shells ( leave the sixth chamber empty) spin the chamber, point at head and pull softly on the trigger, if nothing goes bang consider the lesson learnt empty all cylinders and then recite to yourself, wow Ive been lucky! if you are PPL(H) then stay VFR, its much nicer to be able to talk after your flights, rather than talked about......... But then there are always some who will try to expand the envelope, and when it rips its too late!
VfrpilotPB/2
Peter R-B