First build-300wsm complete. 16 feb update with target pics

[mram10]

Rem 700 long action (still needs stripped and cerakote)
Christensen arms carbon barrel
PTG match 300 wsm reamer (.3535 neck, .169fb)
Finished the lathe work this morning but still waiting on manners to send the stock. Couple questions:
1. Shank length is .950 instead of .998 (.010 off lugs) because I was told it doesn’t matter. Thoughts?
2. This rifle is for me, so I headspaced with a fl sized piece of brass and cut the neck off. My brass fits fine as does some over the counter stuff, but a couple other bought types wouldn’t fit. Since I only shoot handloads and my brass fits fine, does it matter?
Edit: went back and used go gauge to verify.
3. The reamer was very tight and I had to use a cleaning rod to tap it out. Is that normal?
4. I used a piece of 500 grit in the chamber at 780 rpm to polish out any marks. Good/bad?
Edit: went back and sanded at 780 again till it smoothed outmand shined up
I know someone will ask, but I’m sorry, it isn’t for sale

 

[mram10]

Tried to show chamber here.
Setup:

 

[carlsbad]

So if you shortened your tenon by .048 did you make your counterbore shallower by .048"? If not, then your case is unsupported for .048" where it should be supported. Not good. Hopefully, the clearance from bolt nose to bottom of counterbore is .010".

--Jerry

 

[GenePoole]

How come you never take pictures of your setup and work? That'd be worth more for critiques than the finished product. For instance, how are you aligning your barrel? We can't tell how concentric you chamber is based on a final picture. What about the action? Looks like there was some cutting done there; what was the setup for that?

 

[carlsbad]

How come you never take pictures of your setup and work? That'd be worth more for critiques than the finished product. For instance, how are you aligning your barrel? We can't tell how concentric you chamber is based on a final picture. What about the action? Looks like there was some cutting done there; what was the setup for that?

So you're saying that without this, he doesn't have to worry about his last statement?

 

[mram10]

Jerry, I adjusted the counter bore to be .010 from bolt.
Gene, I get busy and don’t want to bother. I’m going out to build a 6.5-284 now and will take pics of setup. The receiver lugs were slightly marred, so I cleaned them up with a boring bar. Took off .002. Afraid to take more off.

 

[IdahoCTD]

Sounds like a PTG reamer strikes again. That's why I don't buy PTG reamers anymore. They don't cut as nice and have issues like your talking about. The lack of headaches is worth the additional cost for a Manson or JGS because you get what you pay for and they work correctly every time. To me that says the taper on the reamer isn't correct or you need to stop and clean it out more often because a flute is packing with chips. Still need to work on the threading feeds and speeds or how rigid your holding the barrel. The tenon length is what you measure it to be so that is irrelevant.

I'll leave you with this......buy/borrow/rent a go gauge. It will lessen the headaches.

 

[butchlambert]

What sound? "Sounds like a PTG reamer strikes again." I wouldn't jump to that conclusion.

 

[GenePoole]

What sound? "Sounds like a PTG reamer strikes again." I wouldn't jump to that conclusion.

Nor would I. How would incorrect taper angle cause it to jam in the bore? My guess would be too little lube or too hard/fast feeding.

 

[carlsbad]

wrong bushing?

 

[carlsbad]

Jerry, I adjusted the counter bore to be .010 from bolt.
Gene, I get busy and don’t want to bother. I’m going out to build a 6.5-284 now and will take pics of setup. The receiver lugs were slightly marred, so I cleaned them up with a boring bar. Took off .002. Afraid to take more off.

OK then you have only compromized your "3 rings of steel". It is a remington safety feature. Other's don't even have it. so many will say it isn't important.

Taking a cut off your lugs will reduce primary extraction and eventually the handle will rub on the action. Should always be minimized, as you did. --Jerry

 

[NickB1075]

I hate to be like this or discourage you because that is not my intention. I started on my own a few years ago so I know what it is like. I had/have a few mentors that helped me along the way. But I really think you need to stop and get some schooling or instruction from a competent smith or machinist. It seems like you still dont have the basics, or the correct tooling and equipment.

Nick

 

[Stan Taylor]

I hate to be like this or discourage you because that is not my intention. I started on my own a few years ago so I know what it is like. I had/have a few mentors that helped me along the way. But I really think you need to stop and get some schooling or instruction from a competent smith or machinist. It seems like you still dont have the basics, or the correct tooling and equipment.

Nick

No pun intended but I like the way you think.

 

[Stan Taylor]

Nor would I. How would incorrect taper angle cause it to jam in the bore? My guess would be too little lube or too hard/fast feeding.

I don't particularly like that ring I see at about.500 up in the chamber it might not be but it sure looks like it.

 

[shortgrass]

Tenon length doesn't matter? And I see the ring inside of the chamber now that Stan mentioned it. Solid pilot reamer or removable pilot? Got any pics of the fired brass? You really need to do something about the chatter on those threads. I know, it doesn't matter how ugly or how pretty your threads are. Still, shows you've got a problem....

 

[paperpuncher]

That thing is still chattering like crazy, might just be cosmetic but that would drive me nuts. Perhaps Im too OCD but I would need to get to the bottom of that.

 

[Stan Taylor]

I just cut this set of threads on a Chinese lathe 12x36 precision matthews for a bat action not perfect but liveable.

That thing is still chattering like crazy, might just be cosmetic but that would drive me nuts. Perhaps Im too OCD but I would need to get to the bottom of that.

 

[mram10]

I agree with Nate, it is the reamer
Nick, I’m too old to wait. I’ll learn as I go buddy. Plenty of experience to learn from on the forums.
The reamer was a ptg with pilot. Super tight. As for the setup, here are some pics from the 6.5-284 I just finished. Now that I have stuff to shoot, I’ll take time to go through the lathe AGAIN and see if I can get the shakes out of it.

 

[mram10]

More pics

 

[mram10]

Here are feet I built that stretch front to back, 2 under the head stock and 1 under the tail. They have 5/8 bolts going through with a washer and nut on both sides to adjust. I didn’t epoxy them into the concrete, just set them in so it wouldn’t walk. Guess I’ll have to get some wedge bolts and try that.