Robert's 17HMR Razor Magnum Build
Well, I got the chance to machine my Razor receiver and bolt today!
Also, I was surprised at how light the recoil spring is! I have found a like sized replacement but with twice the rating. The SF spring is around 62# rating, the possible replacement is 124#.
Also going to machine a long brass follower. The SF follower is 5g, the joiner (not really coupled mass) is 3g. I am thinking that a 3" long follower should add a few grams to the bolt mass. SF charging handle by itself is 22g. Going to see how much mass I can add...can't hurt, right? I was surprised that brass is slightly more dense that stainless steel! Learn something every day!
I did not install my KID +10% spring. If these mods are successful, I would rather anyone else not *have* to add another item.
Will keep adding to this post as I go along, any comments or suggestions welcome!
Robert
Here we go again!
Indicated within .0005 over 4~5"
Barrel hole location within .001
Final drill operation, stepped up over a few sizes
.6875 reamer ready
Done
Looks good!
.1875 ream for TG holes
Numbers look familiar?
V-block threads
5/16" magazine hole @ 3 degrees
Milling the bolt shelf (about .050~.060) so the bolt will drop in easy
Enlarging the pocket on the bolt face
Fits a lot better now
Not much came out
Fits and stays great
Well, I got the chance to machine my Razor receiver and bolt today!
Also, I was surprised at how light the recoil spring is! I have found a like sized replacement but with twice the rating. The SF spring is around 62# rating, the possible replacement is 124#.
Also going to machine a long brass follower. The SF follower is 5g, the joiner (not really coupled mass) is 3g. I am thinking that a 3" long follower should add a few grams to the bolt mass. SF charging handle by itself is 22g. Going to see how much mass I can add...can't hurt, right? I was surprised that brass is slightly more dense that stainless steel! Learn something every day!
I did not install my KID +10% spring. If these mods are successful, I would rather anyone else not *have* to add another item.
Will keep adding to this post as I go along, any comments or suggestions welcome!
Robert
Here we go again!
Indicated within .0005 over 4~5"
Barrel hole location within .001
Final drill operation, stepped up over a few sizes
.6875 reamer ready
Done
Looks good!
.1875 ream for TG holes
Numbers look familiar?
V-block threads
5/16" magazine hole @ 3 degrees
Milling the bolt shelf (about .050~.060) so the bolt will drop in easy
Enlarging the pocket on the bolt face
Fits a lot better now
Not much came out
Fits and stays great