6BR reamer thoughts?

[sethrows]

I just received a 6BR reamer in the mail that I ordered off the shelf from JGS, and it has 3* throat angle. Can someone educated me on throat angle? I've noticed that a 3* throat angle doesn't seem too common across other prints. My intentions were to run 105 Hybrids with this barrel, or maybe have it throated for 108 ELD-Ms.

 

[Dusty Stevens]

That is a 6br remington reamer- not lapua- is why nothing looks familiar. I think butch lambert has a bunch of the brass youll need stockpiled.

 

[BenPerfected]

As the reamer is is off the shelf, can you exchange it?

 

[dkhunt14]

The Lapua, Norma case is bigger at the back end. I would try to exchange it for a 6BR Norma reamer. The brass for this is much better and the dies will work better. If you don't use Rem brass and a 6BR Rem die for that reamer, you will have trouble sizing and ejection problems. Matt

 

[sethrows]

That is a 6br remington reamer- not lapua- is why nothing looks familiar. I think butch lambert has a bunch of the brass youll need stockpiled.

Other than the print name, what makes you say it's a BR remington reamer? I think @ .200 (.4714), the shoulder (.4609), and case length (1.570) is fine. I'll stand corrected if not, I was told it's the same print as #1262 minus the freebore and lead angle.

 

[tclaunch]

All numbers look fine with exception of leade angle. If you do have it throated that will change to the angle on the throater.

 

[sethrows]

All numbers look fine with exception of leade angle. If you do have it throated that will change to the angle on the throater.

Thank you, that's what I assumed if I do get it throated for the 108s. Out of curiosity, whats the idea behind 3* angle? I've google'd the heck out of it and have found only a brief bit of information. Is there any cons over it vs say a 1*30" if I left the chamber as cut and shoot it with Hybrids or something similar? The current reamer I've been using (1 barrel) is definitely tight @ .200 (.470), my Forster die's have worked out with it so far, but I know it'll eventually catch up which is I why purchased this reamer.

 

[tclaunch]

I`d guess by saying it may be the fact it is a Remington print. Most factory leade angles are 3*. Your Forster die may be tight on this chamber. Redding S-Type FL may be the ticket.

 

[hrlincoln]

On JGS print #1262, the freebore is .0940 (U&V) and the leade angle is 1-30-0 (J)...can send you a copy for comparison if you like. Built a 6BR this past summer off print #1262 and had it throated for the Berger 90gr BT Target...JGS measured a dummy cartridge and came up with a freebore of .0740. I was initially using a Redding Type S FL bushing die, but the B0 that Harrells sent me has worked out better.

 

[tclaunch]

On JGS print #1262, the freebore is .0940 (U&V) and the leade angle is 1-30-0 (J)...can send you a copy if you like.

This is a reamer I have owned, that I like a lot. It also is a stocked item.

 

[sethrows]

On JGS print #1262, the freebore is .0940 (U&V) and the leade angle is 1-30-0 (J)...can send you a copy if you like.

I got the #1262 saved also. Thank you though!

 

[sethrows]

This is a reamer I have owned, that I like a lot. It also is a stocked item.

They didn't have #1262 available, sounded like a 12 week wait otherwise I'd been on it. I did ask about it, and was told this print was the same minus the freebore and throat angle. I guess, if the 3* will cause me issues or be a pita, I could exchange it and be a little more patient.

 

[JFrank]

Other than the print name, what makes you say it's a BR remington reamer? I think @ .200 (.4714), the shoulder (.4609), and case length (1.570) is fine. I'll stand corrected if not, I was told it's the same print as #1262 minus the freebore and lead angle.

It says so right on it"
Notice the first date 1989

 

[sethrows]

It says so right on it"
Notice the first date 1989

Other than the name, freebore and leade angle. What is the difference with #1262 vs #1125? Just asking for a friend.....

 

[hrlincoln]

Can someone educated me on throat angle? I've noticed that a 3* throat angle doesn't seem too common across other prints. My intentions were to run 105 Hybrids with this barrel, or maybe have it throated for 108 ELD-Ms.

riflebarrels.com/a-look-at-bullet-ogives-and-chamber-throat-angles/

Article off Dan Lilja's website...

 

[JFrank]

Other than the name, freebore and leade angle. What is the difference with #1262 vs #1125? Just asking for a friend.....

Tell your friend to
Print both copies lay them side by side, audit every number.
J

 

[sethrows]

riflebarrels.com/a-look-at-bullet-ogives-and-chamber-throat-angles/

Article off Dan Lilja's website...

I had to read this article a couple times yesterday, before I posted here. It was an excellent read.

 

[sethrows]

Tell your friend to
Print both copies lay them side by side, audit every number.
J

You're saying JGS told me wrong? Because I did ask about it, and this reamer is not setup for Lapua brass.

 

[hrlincoln]

I notice that the #1262 print you just posted has a .237 pilot size and a .237 bore. My #1262 print is for a .236 bore and has a pilot size of .2356. What is the bore diameter of the barrel you intend to chamber?

 

[JFrank]

You're saying JGS told me wrong? Because I did ask about it, and this reamer is not setup for Lapua brass.

I didn't say that at all..