Size of tap for scope mounts

The 98 receivers are pretty hard so you will want to use a cobalt drill bit for this chore and go very carefully with the tap. Start the job with at least one spare tap on hand.
 
My advice would be to take it to a reliable gunsmith familiar with locating the holes correctly and drilling and tapping square to the receiver and in correct alignment ... chances are it will save you money...

Most do it your self drilling and tapping jobs I have seen did not go well...
 
guntech said:
My advice would be to take it to a reliable gunsmith familiar with locating the holes correctly and drilling and tapping square to the receiver and in correct alignment ... chances are it will save you money...

Most do it your self drilling and tapping jobs I have seen did not go well...
Click to expand...
X2 :)

If your determined to do it yourself HVH Enterprises out of Winnipeg carries taps and bits 204-255-8988

heed the advice though....Good Luck
 
guntech said:
My advice would be to take it to a reliable gunsmith familiar with locating the holes correctly and drilling and tapping square to the receiver and in correct alignment ... chances are it will save you money...

Most do it your self drilling and tapping jobs I have seen did not go well...
Click to expand...

i have no interest at the moment to drill any thing out..but just to be a snoop...how are the centers for the holes found?is there a jig used to find them?
 
Yes, there are jigs used, to get the holes located correctly, and to make sure the holes are top dead centre, and aligned. I use a Forster jig. The guide can be adjusted for whatever hole spacing is needed, and I have a set of gauge blocks to make sure. It can be done using the scope base as a jig to get the holes spaced correctly, with the receiver clamped level on the drill press table, but a good jig is MUCH better. You have three or four holes to drill and tap and they have to be right. No easy second chance. I've drilled and tapped quite a number of rifles, and it is a job that just has to be done right, the first time.
 
tiriaq said:
Yes, there are jigs used, to get the holes located correctly, and to make sure the holes are top dead centre, and aligned. I use a Forster jig. The guide can be adjusted for whatever hole spacing is needed, and I have a set of gauge blocks to make sure. It can be done using the scope base as a jig to get the holes spaced correctly, with the receiver clamped level on the drill press table, but a good jig is MUCH better. You have three or four holes to drill and tap and they have to be right. No easy second chance. I've drilled and tapped quite a number of rifles, and it is a job that just has to be done right, the first time.
Click to expand...
thanks for the info...even though i have tons of machine shop usage...i would neaver try and drill for a scope mount...
 
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