F T/R Competition About Finishing Reamer from PTG

[l115a3]

I got a custom Finish Reamer of .308 F-TR as Dave recommend .342" FB .168" 1-30
Degree add Tin Coated, but just wonder do I need to have a Rough Reamer for start chamber a new barrel?

PTG only ship Finish Reamer without Rough Reamer.

My previous Clymer M-852 that bought from brownell was come with complete set of Finish Reamer , Rough Reamer , Go & No-Go Gauge.

 

[l115a3]

Re: About Finishing Reamer from PTG

So need some advice about chamber.

Can I chamber a new barrel with only Finish Reamer or I shoud order a Rough Reamer?

 

[krw]

Re: About Finishing Reamer from PTG

Yes you can chamber with finish reamer only.

 

[l115a3]

Re: About Finishing Reamer from PTG

How many time that expected to chamber with HSS Reamer?

 

[BradfromND]

Re: About Finishing Reamer from PTG

You drill out the chamber first and then run the finish reamer. I have heard of guys just going slow with the finish reamer and doing the whole thing. I'm no gunsmith but have watched lots of videos and every one I've seen has shown them drilling out the chamber and then running the finish reamer.

 

[l115a3]

Re: About Finishing Reamer from PTG

This is a drawing of my FTR Reamer from Dave.

Do they required the specific Rough Reamer for this chamber or just using normal rough reamer?

 

[hammerhead]

Re: About Finishing Reamer from PTG

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Can I chamber a new barrel with only Finish Reamer</div></div>Yes


<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">How many time that expected to chamber with HSS Reamer?</div></div>x40. No need to pre-drill.

FYI: http://www.youtube.com/watch?v=1d989VrW_70&list=UU8sJGKqCK5rDl-_A1r1D1sw&index=3

 

[aam]

Re: About Finishing Reamer from PTG

Yes, you can chamber your barrel on a finishing reamer, no need for a rough reamer, unless you plan on chambering several barrels per year. If so, then a rough reamer would be worth getting.

I'll be getting a 308 finishing reamer in the next two months, just a standard SAAMI spec. This will last me my life time. I figure one new barrel every three years.

 

[lw8]

Re: About Finishing Reamer from PTG

A friend of mine has that reamer in carbide and claime more than 100 barrels done with it and still going strong.

 

[l115a3]

Re: About Finishing Reamer from PTG

Firstly, I prefer to order this reamer in Carbine but Staff of PTG recommend to go with HSS and Add Tin Coat would be enough for my using as Hobby.

 

[memilanuk]

Re: About Finishing Reamer from PTG

In getting some barrels ready for the season, I hopped in with some other folks in using their reamer and gunsmith, who happened to do the whole job using the finish reamer. No roughing reamer, no pre-drill, no carbide or Ti finish.

Reamer lasted for two barrels and three barrel stubs (gizzies) - very *nice* chambers, and mine (the last one) seems to shoot really well, if a fuzz tight in the back end...

Based on this, now that I have my own reamer in hand... pretty sure I'm going to be wanting any future chambers done with drilling/roughing out the waste first, rather than use up an expensive (more so in terms of lead time) finish reamer to do the job.

YMMV,

Monte

 

[SSC]

Re: About Finishing Reamer from PTG

Golfy---Give me a call and I can walk you through the process.

 

[l115a3]

Re: About Finishing Reamer from PTG

I just got a notice from Lath Smith that he required to using Floating Reamer Holder for better cutting a chamber.

So, which type & Brand of Floating Reamer Holder will suitable with my project?

 

[memilanuk]

Re: About Finishing Reamer from PTG

If he's requiring it... why do you have to buy it? Should be a tool he already has on hand, as its not specific to any one caliber or reamer AFAIK.

 

[l115a3]

Re: About Finishing Reamer from PTG

Do I need to order a custom die for this chamber?

My once fired FC brass from normal 700 XCR chamber and FL sizing with Redding Type S FL Die does not proper chamber in this barrel.

F-TR Reamer Drawing from PTG

Spec; .308 F-TR , .342nk , fb .088 , 1'-30

This new chamber pass with .308 win Go-Gauge.

The new FC brass + FL Sizing can chamber properly.

The once fired FC brass from this chamber measure headspace - 0.001" (Measure with RCBS Pres Mic .308 Win)

 

[iron308]

Re: About Finishing Reamer from PTG

You are going to need to run your fired brass through a small base die.

I've had the same issue using fired brass from one chamber in another. The 95 Palma chamber is fairly tight in the body compared to many other .308 chambers. The F/tr Chamber is exactly the same at the 95 Palma from the neck down.

More than likely, you will only need to do it once. (Unless your FL die is worn). The reason you will only have to do it once is spring back, especially near the base. In a more generously dimensioned chamber, the brass is going to spring back more after FL sizing. Once you get it sized to fit your new FTR chamber with the small base die, your FL die should resize it enough to re-chamber on all subsequent firings.

Basically you have to get it small enough to fit once, then when fired in the smaller FTR chamber, it will not expand as much and the FL die will be sufficient to properly resize it from then on.

 

[l115a3]

Re: About Finishing Reamer from PTG

I order 2 F-TR Reamers from PTG which Dave design for 2 purpose


• No Nk-turned for Lapua Brass , Mag Box , 175 gr. projectiles.

<span style="font-weight: bold">.342 nk , fb .088" , 1-30</span>


• No Nk-turned for Lapua Brass , Single Shot , 175 - 185 gr. projectiles.

<span style="font-weight: bold">.342 nk , fb .168" , 1.30</span>



But as I check with German Salazar, he mention that the Single Shot freebore was too much. For 185 gr. projectiles, 0.114" would be enough.


Any idea for the Single Shot Reamer? Because My brother only test chamber with the .088" freebore.

Here is the 10 shots group @ 200 yards

 

[iron308]

Re: About Finishing Reamer from PTG

A- My apologies. My comments were about the 'Official' US FTR team Reamer. I see that your reamers are both somewhat tighter at the base. (.4700" at the .200 line vs .4731" for the US FTR reamer). I still believe that using the small base die as described above will solve your chambering problem.


B- a .114" lead would be very near minimum for a 185 Berger Juggernaut or BTLR. If you want your bullet seated the entire length of the neck then .114 would do it and still give you approximately .020 to .030 jump. Your .168 lead should be fine, just seat them out a bit.

 

[l115a3]

Re: About Finishing Reamer from PTG

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: iron308</div><div class="ubbcode-body">A- My apologies. My comments were about the 'Official' US FTR team Reamer. I see that your reamers are both somewhat tighter at the base. (.4700" at the .200 line vs .4731" for the US FTR reamer). I still believe that using the small base die as described above will solve your chambering problem.


B- a .114" lead would be very near minimum for a 185 Berger Juggernaut or BTLR. If you want your bullet seated the entire length of the neck then .114 would do it and still give you approximately .020 to .030 jump. Your .168 lead should be fine, just seat them out a bit.

</div></div>


Many thanks for your help.

Based on your info,

If fb 0.114" is near minimum for 185 LRBT, Then for 185 Hybrid would proper with fb around 0.123"


I don't know the left shank in nk when seat 175 LRBT or 168 Hybrid to touch the land of F-TR Single Shot Reamer (.168" fb) will enough!!!

 

[iron308]

Re: About Finishing Reamer from PTG

Golfy,

With regards to those other bullets, I don't have any to measure, so I can't say for sure.

 

[l115a3]

Re: About Finishing Reamer from PTG

What is your best deal for seat Depth of Berger 185 LRBT or Hybrid?


Just need some info for seating guideline.

I currently seat .030" off the land for 185 LRBT

 

[jerry1]

You certainly can do a chamber with just a finsh reamer. I have done it a number of times. Most people take out excess material with a drill. You have to be careful but it is not hard. You can also buy drills that have bushings which is safer. Nevertheless, a rougher reamer is very nice if you can afford it. A rougher will save a finish reamer a lot of work. There is a lot of debate in how long a reamer lasts. I felt I had got good value if the reamer went ten barrels. A rougher should double the life of a finisher.