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Normal Topic Replacing scope blocks on new 2 me Walnut Hill 417 (Read 559 times)
emmett22405
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Replacing scope blocks on new 2 me Walnut Hill 417
Apr 29th, 2019 at 10:21am
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Scope blocks and screws gone from 417, only lyman receiver sight and globe front remain. I know zip about missing items but do have Unertl with mounts. Welcome help and advice as to mount heights and screw sizes etc Thanks
  
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marlinguy
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Ballards may be weaker,
but they sure are neater!

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Re: Replacing scope blocks on new 2 me Walnut Hill 417
Reply #1 - Apr 30th, 2019 at 8:49am
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Tough to say what the screw sizes are, but 6-40 and 6-48 are quite commonly used. Have to try various screws to determine what the barrel is D&T for.
Blocks normally use a pretty standard spacing, but again no way to know what yours is unless the spacing is measured between holes front and rear. They usually have different spacing to allow the front mount to engage first, and then the shorter rear 2nd.
Bases should be as low as the objective bell will allow, so if your scope can sit on top of your barrel and the bell doesn't touch, then you can use the lowest base. If the bell touches, then get bases thick enough to elevate until the bell clears.
Steve Earle Products carries a large selection of bases to choose from Check his website.
  

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kensmachine
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Re: Replacing scope blocks on new 2 me Walnut Hill 417
Reply #2 - Apr 30th, 2019 at 9:44am
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I have a Ballard with a Stevens scope and the mounting screws are 5x40 but like Val said the 6x40 and the 6x48 are more common
  
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Dellet
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Re: Replacing scope blocks on new 2 me Walnut Hill 417
Reply #3 - Apr 30th, 2019 at 10:29am
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As mentioned Steve Earle has mounts, but he also has the most common spacings listed.

Stevens mounts for a time had their own bolt spacing as well as using a 5-40 screw, same as the tang sight.

The 417 should probably be past that date, but it's a Stevens Wink
  
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RonJonUSN
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Re: Replacing scope blocks on new 2 me Walnut Hill 417
Reply #4 - May 9th, 2019 at 8:42am
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Didn't Stevens use that real oddball thread 6-44 on some of their scope blocks?
  
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emmett22405
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Re: Replacing scope blocks on new 2 me Walnut Hill 417
Reply #5 - May 13th, 2019 at 6:55pm
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I bought blocks and 6-48 screws but they wouldn't tighten entirely  then bought 3 die tap set for 6-48  tried chasing threads  with tapered dies still no go read somewhere dont use bottoming tap as they mess up top threads . took to gunsmith in 3 seconds he observed that the factory drilled and tapped screw threads  did not go to bottom of holes!!  in 3 minutes he used my bottom tap and all is well.  then i left so excited i got home after 2 1/2 hr drive from smith finding voice mail that I had left the rifle there (but did pick up 2 others). Old age bad bad bad.
  
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Amoretti
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Re: Replacing scope blocks on new 2 me Walnut Hill 417
Reply #6 - May 13th, 2019 at 8:26pm
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Iíll bet those taps came from China via eBay, I bought em too.  Like John Taylor pointed out they donít look like any normal taps, way too much taper esp the bottoming tap.  I ground the end off the bottoming tap and got the job done.  Buyer beware!
  
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