Made up a .45 calibre inserts dohicky so I can boresight my hefalump gun again. Half inch coach bolt,nearly right size and with careful grinding off the thread it's a nice snug fit.cut head of bolt so boresighter can slide on a yip works a treat...now it's ballpark close will check on paper.oldschool boresighting didn't work as amount I can see through a 45 calibre hole out at thirty yards is rather big lol. Should be ok for bailed pig or possum up tree as long as I keep eyes open not shut in flinch...sook
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