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6mm Dasher neck dimensions for reamer

Hi all,

I am looking to get a reamer for my dasher. I dont have the specs of the current chamber...nor can i get them now,long story!)

I use lapua brass,clean up turned only) with a loaded OD of .270" using 107 SMK's. These chamber quite easilly with no problems. Would a neck dimension of .272" on the reamer,ie .001" clearance) be suitable? I have read a little about this on other posts but I'm not sure what is suitable or not. Any opinions are appreciated.

This is an F-Class rifle
 

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