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  1. When I cut rifle barrel tenons and thread, I cut...

    When I cut rifle barrel tenons and thread, I cut the major diameter at .995 x
    the nominal diameter. A 1.0625" is cut to 1.058" thus giving me the proper clearance and flat tops.
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    As an apprentice, I had to make tools like that.

    As an apprentice, I had to make tools like that.
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    When you grind the HSS tools, you can use a...

    When you grind the HSS tools, you can use a dremel to grind a chipbreaker in just past the cutting edge. If possible, avoid backing off on the crossfeed between cuts, that way the slop is taken up at...
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    The swivel base vise is a carry over from the old...

    The swivel base vise is a carry over from the old horizontal mill days.
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    A lot of us pros have a South Bend 9/10 in our...

    A lot of us pros have a South Bend 9/10 in our basements or garages to do those weekend prone that can't be done at work. I have a 9A at home and a HLV and a Clausing at work. My 88year old retired...
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    I have a plexiglass shield that clamps on the...

    I have a plexiglass shield that clamps on the vise.It folds down to access the jaws. Got it from MSC.
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    Use a split shaft collar, drill a hole for the...

    Use a split shaft collar, drill a hole for the large end of the pin in one half. Put it on over the pin and tighten up the two bolts, as it tightens against the small end it should push out the pin....
  8. Slug the barrel to check the bore dimension, it...

    Slug the barrel to check the bore dimension, it might be an odd size. Previous owner might have been trying to use the wrong ammo.
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    New bullet designs have leveled the field also. A...

    New bullet designs have leveled the field also. A premium bullet in a.30-06 can make it perform like a .300 mag with standard bullets.
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    We have test ported a barrel every inch following...

    We have test ported a barrel every inch following the groove. Waiting for approval to release the data.
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    3,112

    Our test results show that mid-case pressures...

    Our test results show that mid-case pressures average 3000psi to 5000psi higher than the case-mouth pressures. This is measured with a Kistler 6215 piezo electric Gage. The time under the pressure...
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    3,112

    Case mouth is different than midcase pressures. I...

    Case mouth is different than midcase pressures. I will check the data at work tomorrow and see what the difference is.
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    Same thing I am doing.

    Same thing I am doing.
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    If you don't have a taper attachment, you will...

    If you don't have a taper attachment, you will need to turn it between centers using an offset center in the tailstock. I made one from a boring head. Mill a flat on one side of a round one, or find...
  15. Thread: clearances

    by MilGunsmith
    Replies
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    I see from your first post that it has a new...

    I see from your first post that it has a new Timney trigger in it. Check to see if the trigger adjustments are correct. Lot's of trigger problems are caused by triggers being messed with by...
  16. Back when I started machining in the 60's as a...

    Back when I started machining in the 60's as a kid in my fathers shop, all I had for reference materiel was dad's old toolmaker apprentice books from the 50's and a old collection of the Popular...
  17. It looks like a sewing machine bobbin winder.They...

    It looks like a sewing machine bobbin winder.They were mounted on the back of the table on the right side and ran off a small belt from the machine.
  18. Always modify the cheaper replaceable parts.

    Always modify the cheaper replaceable parts.
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    What type of insert are you using? Positive rake?

    What type of insert are you using? Positive rake?
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    Use HSS, but you can also get HSS inserts from...

    Use HSS, but you can also get HSS inserts from A.R.Warner if you don't want to grind.
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    Looks like the Bridgeport M head mill that I had....

    Looks like the Bridgeport M head mill that I had. It.may have had the head changed
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    Instead of taking the spindle out, machine it in...

    Instead of taking the spindle out, machine it in place, using the lathe. It will be concentric to everything that way.
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    We use JGS almost exclusively now. Had too many...

    We use JGS almost exclusively now. Had too many issues with PTG deliveries and office.
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    What size bore? I have gotten them from PTG.

    What size bore? I have gotten them from PTG.
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    I just installed the Babin servo threading...

    I just installed the Babin servo threading attachment on our HLV-BK. It was much easier than finding or making all the necessary parts for metric threads, plus I now have a wider range of imperial...
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