Putting a custom knob on a 700

B

Bnhpr

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What's the norm for putting a custom knob on a 700 bolt?

I was planning on it being longer, for decreased lift force, and was going to turn an aluminum knob in the lathe.

I was thinking about machining the exixting knob off in the mill, so it left a square end, basically a continuation of the area below the existing knob.

Then, tap the end of it out to 1/4 28 or something, and either put a stud in it, or thru drill my new knob (i have not made yet) for a socket head cap screw.

Any advice appreciated.

Ben
 
Ben

Just set up your bolt in a 4-jaw so that the existing handle and knob is lined up, turn it down to 1/4", thread to 1/4 x 28, and make any kind of knob that suits your fancy and screw it on.

Ray
 
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You can even hand grind the knob off parallel to the handle, taper the end a bit and thread it using a die... The badger knobs can be installed this way...
 
Use the Thread die like Dennis said.

Just use a 5/16x24 tpi die and the majority of the tactical knobs sold will screw on.
 
Baron Graham said:
Just use a 5/16x24 tpi die and the majority of the tactical knobs sold will screw on.
Click to expand...

Yes, this is the standard procedure. Put your bolt in a milling machine vice and turn it down with a boring head with the tool turned 180 deg. so that the 5/16" dia. is .700 long.
 
OK, thanks for the great ideas, as usual guys.

I'll play around with it some, I can always tig something on with a heat sink if I screw it up too bad.

I'll play around with it in the 4-jaw, I may have to make a jig, but then, I'll have it.

I also may need to drop a few ounces, I'm right at the weight limit on a HBR rifle this is going in. I did not want to shorten the BBL, so I was looking at some skeletonizing the bolt handle and so forth, from some pics I've seen.

The knob will be lean piece of 6061 also to keep weight down.

Ben
 
Ben,
Instead of using 6061 for a bolt knob,I preferr using 7075 or Titanium w/ a TIG welded handle of coarse.
As mentioned the industry std is 5/16"-24tpi.
 
Ben

Others have suggested using a 5/16 x 24 thread but you should do some measuring before deciding. Some Rem bolt handles are less than 5/16" in thickness. A 1/4 x 28 thread works best for them.

And I question the statement that 5/16 x 24 is the industry standard. Maybe it is for the tactical knobs but you don't want to use one of those ugly monstrosities anyway. Custom knobs for actions such as a Stolle are drilled and tapped 1/4 x 28.

JMHO

Ray
 
Cheechako said:
Ben

Others have suggested using a 5/16 x 24 thread but you should do some measuring before deciding. Some Rem bolt handles are less than 5/16" in thickness. A 1/4 x 28 thread works best for them.

And I question the statement that 5/16 x 24 is the industry standard. Maybe it is for the tactical knobs but you don't want to use one of those ugly monstrosities anyway. Custom knobs for actions such as a Stolle are drilled and tapped 1/4 x 28.

JMHO

Ray
Click to expand...


My dial calipers are telling me the same, and with a 2 oz trigger, I'll never shoot this thing with welding gloves on. I was thinking of making a long tapering knob with a small raised knurled part, sleek and sexy. I shot a Borden action the other day, and I like the long handle makes it easier to lock, unlock.

I may even make it M6 12.9 or something :eek: that will raise some eyebrows, but whatever fits, feels, operates and looks good.

thanks Ben
 
Ben

Here are a couple oF my custom knobs.:rolleyes:

Right is a long and sleek one, left is plain round. Checkering is set off by a brass ring. Those are both Panda bolts and the knobs are tapped 1/4x28.

Ray

knobs.jpg
 
The Knurled Factory Knob

The Factory Knob is what we are talking about threading. The knob is considerably large than 5/16". Here is a link to Mike Bryants web page showing how to do it in a lathe. those that don't have a lathe can simply grind the Knob down to 5/16" and thread with a die. I also attached a pic of mine it is threaded 5/16" x 24 tpi factory handle on a PT&G Bolt. http://www.bryantcustom.com/articles/tacticalboltknob.htm

Cheechako,
Man, as my 3 year old would say " I Like Dat"
 

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Cheechako said:
Ben

Here are a couple oF my custom knobs.:rolleyes:

Right is a long and sleek one, left is plain round. Checkering is set off by a brass ring. Those are both Panda bolts and the knobs are tapped 1/4x28.

Ray

knobs.jpg
Click to expand...


Wow!!! Nice set of knobs you have there!! :D
Melvin
 
I stand corrected,on the industry standard for Tactical bolt knobs being 5/16"-24 tpi as I've been dealing with alot of wantabee Tactical shooters recently instead of the more technical BR shooters.

Thanks for jogging my memory as I TIG welded a couple Stolle threaded handles on a couple years ago.(owner confidentiality)

Nice bolt handle-knob modifications!!

I like the Red/Black stock pictured also!!
 
Here is a bolt handle I did on a old XP100. I need to get around to finishing the action . I don't think it was shot much but it had some rust on it when I got it so it will have a bead blast finish when I'm done. I just cut the bolt off and tig welded a piece that I turned in a lathe. Not as fancy as Cheechako's. Art
XP.jpg
 
crb said:
Callahan, $9.99. Why make one ?

Callahanlargeboltknob.jpg
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boltknobscopy.jpg


Cost of material- Maybe $0.50 per knob.

Cost of time to make one- Way more than I want to admit, mostly due to my lack of skills and knowledge :D.

The opportunity to play around with my mini-lathe, try shapes that are a little "different", learn more about machining, plus make something for a friend- PRICELESS ;):D.

Jim
 
Cheechako said:
Ben

Here are a couple oF my custom knobs.:rolleyes:

Right is a long and sleek one, left is plain round. Checkering is set off by a brass ring. Those are both Panda bolts and the knobs are tapped 1/4x28.

Ray

knobs.jpg
Click to expand...

Ray, those are very nice!!! geat work, are you tuned up and ready for the Nationals? Ron Tilley
 
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