6.5 x 47 reamer question

[Never Forget]

I am looking at the CIP prints from JGS and PTG on the 6.5 x 47 lapua and noticed the neck dimension is .292. I believe to have a no turn neck it needs to be .294? If this is correct I'm guessing I will have to turn .002.

So is it worth having a special reamer cut to have a no turn neck? I've never done it, not afraid to do it but would prefer no too. I have a no turn on my 6br and have no regrets going that route.

Is there that much of an advantage to turning necks for accuracy?

I was going to have a reamer made anyway for a .175 freebore and no turn to shoot 139 grain scenars but after looking at the distances I will be shooting most of the time a 123 scenar might be a better option for me and chamber accordingly. The cip reamer will give me about .165 freebore which I'm assuming would be more appropriate for 123's.

Any opinions welcome, John

 

[mikecr]

You should have brass in-hand while reviewing reamer prints. You load a dummy round, measure, and the chamber in consideration is right or wrong.

 

[Patch700]

.292 is a bit tight in my opinion for a no turn , having said that I also prefer a solid.003" -.004" of clearance in a 6.5x47.. Some guys are ok with .001" but it seems to make the round quite finicky if the brass isnt perfect.

The freebore at .167 could be a bit short for 139 scenars but should be ok with the smaller pills.

I personally would leave the reamer at .292 and do a cleanup on your brass.

Good luck

 

[ASbobcat]

I am looking at the CIP prints from JGS and PTG on the 6.5 x 47 lapua and noticed the neck dimension is .292. I believe to have a no turn neck it needs to be .294? If this is correct I'm guessing I will have to turn .002.

So is it worth having a special reamer cut to have a no turn neck? I've never done it, not afraid to do it but would prefer no too. I have a no turn on my 6br and have no regrets going that route.

Is there that much of an advantage to turning necks for accuracy?

I was going to have a reamer made anyway for a .175 freebore and no turn to shoot 139 grain scenars but after looking at the distances I will be shooting most of the time a 123 scenar might be a better option for me and chamber accordingly. The cip reamer will give me about .165 freebore which I'm assuming would be more appropriate for 123's.

Any opinions welcome, John

John,

I've had a couple chambered and you are correct. Most consider .294 a true no-turn neck. I had a custom reamer made last year because the barrel maker didn't have one, so I asked for a .293. I would definitely not go any narrower than that. So now I have one barrel of each and can't tell any difference in accuracy.
Virgin Lapua brass measures .2895-.2905 loaded.

I don't shoot that much and at my age will probably not outlive one of my barrels, so I'm selling the reamer and the one barrel it was made with.

Barrel: 26" SS 1:8 Savage large shank, 3 groove Caudle polygon, muzzle threaded 5/8x24 for brake. $350

Reamer: PTG Carbide, live pilot, .293NK (FB on request, made for 140VLD. I'd have to look at the print) $150

Bob

 

[rifleman700]

I only turn necks when I need to clean up some that are inconsistent or when necking down to a smaller caliber and it is necessary. I do check every lot of brass I get to determine if they do need it but with brass getting better and better more times than not good brass does not need turning. I measure my necks with a micrometer instead of a dial caliper.

My 6.5X47L reamer is a no turn .295" with .130" freebore for the 130 class of bullets. I did what mikecr suggested above and purchased my brass first to help determine what I needed. With Lapua brass I knew my need for turning would be slim.

 

[waverly]

I have a .290 neck reamer for 1k benchrest only, but I also have one from Bullets.com that is in stock there now. Bullets.com part#T10181. It has .2944-295 neck with .167 free bore per print that is attached on their website. I've got a Stiller action hunting rifle I used this reamer on. Just measured a loaded round at .2895, and a fired round at .2935. I'm shooting 130 Sirocco's for hunting. Works good.
There is a number on sleeve sticker 153945, and also engraved on the reamer. I never turn necks for hunting rifle.

I hope this helps you out.

Waverly

 

[Never Forget]

I think buying some brass and bullets before buying a reamer makes sense. I understand how to make a dummy bullet but am not sure how to measure how much freebore is needed from the dummy round. I should have mentioned this gun will be a multi purpose mag fed tactical gun. Using it in PRS but also as a back up precision bench gun. My home range only goes out to 300 yards but shoot farther a few times a year. 1K would be the max this gun would see in the very occasional F class match, not looking to be competitive just have fun.

 

[rifleman700]

Load your preferred bullet to magazine length and then send it off to one of the reamer manufactures and have them cut a reamer to your dummy's specs. Or call PTG and tell the tech what you are wanting and they probably already have a reamer that will work.

 

[rpierce]

My reamer is a no turn .295 nk and .175 FB

 

[Alex Wheeler]

Same as Ryan, my tight neck is .290" and no turn is .295" .180" freebore.

 

[B Mize]

My reamer is an off the shelf from JGS and they said it is saami spec. .294 nk and .168fb.
I shoot Berger 140 hybrids .030 or .040" off and have no trouble.
Now .050" off is touching doughnut.
I don't see paying extra for a custom grind to gain .007-.010" when salami spec works

 

[Never Forget]

My reamer is an off the shelf from JGS and they said it is saami spec. .294 nk and .168fb.
I shoot Berger 140 hybrids .030 or .040" off and have no trouble.
Now .050" off is touching doughnut.
I don't see paying extra for a custom grind to gain .007-.010" when salami spec works

I have a copy of the print from JGS, they only stock 1 reamer for the 6.5 x 47 and its a CIP. Neck is tapered from .293 to .292 with a .1634 freebore. I think that may be a bit long for 123's.

 

[dryhumor]

My chamber is a .293 nk, .110 freebore.

Berger 130 VLD hunting COAL 2.732, just at the lands. With Varget, CCI400s, I'm getting very good results.

 

[Never Forget]

My chamber is a .293 nk, .110 freebore.

Berger 130 VLD hunting COAL 2.732, just at the lands. With Varget, CCI400s, I'm getting very good results.

Do you have to turn your necks in a .293? I'm guessing not.

 

[dryhumor]

Do you have to turn your necks in a .293? I'm guessing not.

No, I do not. It is snug, with the first couple shots through a clean bore, before it fouls. Barrel has about 90 rounds through it, at the moment.

 

[rifleman700]

My chamber is a .293 nk, .110 freebore.

Berger 130 VLD hunting COAL 2.732, just at the lands. With Varget, CCI400s, I'm getting very good results.

With the case capacity of the 6.5x47L the 120-130 class bullets are the best choice IMO.

 

[shoot4fun]

The 6.5x47 PTG reamer F01078 from Bullets.com is .294 neck and .167 free bore according to the prints they have.

 

[ASbobcat]

With the case capacity of the 6.5x47L the 120-130 class bullets are the best choice IMO.

BC vs MV tradeoff is pretty much a wash between the 130's and 140's. Many use the 140's in this case with good results.

 

[Never Forget]

I just spoke with PTG, sound like 175 freebore is recommended for 139 scenars and 140 VLD's, 170 for 130 VLD, and 130 FB for 123 scenars. I'm going to make up dummy loads before I purchase a reamer, just debating which bullet to target, leaning toward the 123's for my needs. I'm hoping I can sneak a 130 VLD out as well as 123's and have a little extra throat life to spare, maybe. This was from a tech not Dave.

 

[rifleman700]

I just spoke with PTG, sound like 175 freebore is recommended for 139 scenars and 140 VLD's, 170 for 130 VLD, and 130 FB for 123 scenars. I'm going to make up dummy loads before I purchase a reamer, just debating which bullet to target, leaning toward the 123's for my needs. I'm hoping I can sneak a 130 VLD out as well as 123's and have a little extra throat life to spare, maybe. This was from a tech not Dave.

FWIW Dave steered me to the .130" FB when I said I wanted to run only the 130 VLD. The 130 VLD has performed so well it is the only bullet I have ever run in this rifle. I've got a pile of 123 Amax and Scenar's I have never tried.