Craftsmanship > Gun Building and Repair
Nipple replacement question
(1/1)
Sean McKown:
I have a couple rifles, that I would like to replace the nipples on. Question though. I want to go to 1/4-28, so I only have to buy one size nipple, IF I drill out my traditions/cva(6 x 1mm) will I have enough metal left to thread for the 1/4-28.
Captchee:
The answer is yes . However here is the problem and you should check it before you drill . The difference in these is metric to standard sizes can be very small .
Sometimes folks will in fact mistakenly by a standard thread nipple and pace it in a metric tapped hole .
Depending on the size of the comparison, the difference can be off just a little .
So take a your ¼ 28 tap and try it before you drill . You may find it will simple cut new threads just fine . of course if this will work depends on the tape your using . there are many diffrent types of taps that are used for diffrent purposes
Now if you have to drill the old ones out and replace them its really no problem and yes there is enough meat in the traditions bolster to do that . But do yourself a favor and use a drill press , not a hand drill . You want a good clean hole , not an oveled one .
Use a #3 or 7/32 drill bit that’s good and sharp
Three Hawks:
M6x1 is quite close to 1/4-28, (.234-26 as opposed to .250-28 ) you might try simply installing a 1/4-28 nipple in the M6x1 bolster.
If it's too tight, just run a 1/4-28 bottom tap into it. Use some kind of lube, I like Crisco, and be careful to keep it square to the hole. Back it out and clear the chips a few times, and for G-d's sake, quit when the tap strikes the bottom.
Good luck,
Three Hawks
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