Questions for 6-6.5x47 lapua owners.....

N

ned kelly

New member
G'Day All,
I'm thinking of ordering a reamer for a new F-open LR rifle here in Australia, so I have just a couple of quick questions that I hope someone may be able to answer.......

1. What is the un-turned neck diameter of a loaded round with a typical 6mm LR bullet? And could you tell me which bullet and also measure say 10 rounds and give the average, min and max dimensions please?

2. What sort of MV do you get with the 105-107 gn projectiles with this cartridge?

3. And what sort of accuracy in moa do you get with the un-turned neck and also what is your rifles chamber neck dimension?

4. Those of you with tight neck chambers what size is you chamber neck/loaded round diameter and your accuracy in moa with the tight necks please

5. How much free bore does your chamber have and which reamer do you use?

6. Is the reamer optimised for factory die dimensions? i.e. does the factory FLS die just size the case for your chamber like the custom BR dies do for the 6ppc?

Many thanks,

cheerio Ned
 
6mmbr.com has lots of info on this cartridge with reamer specs. Dave Kiff at Pacific Tool and Die likely has made more reamers for this wildcat then anyone. He is a wonderful resource and he is the manf.

There will also be load data from various rifles so you can get a feeling for its performance.

With the bullets you listed, reaching 3000fps in a 28"+ barrel will be a no brainer.

Many are using this case to take advantage of the 115/117gr bullets which are simply too heavy for the 6BR/Dasher/BRX family of cases.

I personally neck turn all my cases. It is an important step for me to max the performance of my brass. Takes a few seconds per case.

Size of your chamber will be determined by the brass you want to use. Get that first, seat some bullets and measure the diameter. Even Lapua may vary from lot to lot.

Jerry
 
G'day Jerry,
thanks for the heads up, I was hoping those shooters who are using the 6-6.5x47lapua should by now have some experience with the cartridge in competition and was looking for any differences in performance between the no-turn neck and tight neck chamberings.

I can get a no turn neck chambering done locally but after 12 years of 6ppc BR competition, I would like to turn the necks regardless. Even a skim cut on the brass would be better if it isn't too loose in the no turn chamber.

Also, I was after actual neck measurements from the owners of their loaded rounds and their chamber sizings.

I want to be clear i'm not going to sacrifice performance with a no turn neck and see how much I can actually skim cut, if I go the no turn neck option.

I'm probably worrying over nothing but, I want to cover all bases.;)

thanks again,

Cheerio Ned
 
Ned, Pacific Tool and Gauge made me up a reamer in 6x47 Lapua and I wanted a .272 neck. The necks need skim turned to chamber.The skim takes off 1/3 to 1/2 of brass with the remainder of the neck being untouched.
Loaded rounds measure .2705
 
I like a min neck thickness of 14 thou and a max of 16thou. Get some Lapua brass and neck down to see how thick it will get. Then decide how much you need to take off and so forth.

With 1.5 thou clearance per side, you end up with a 0.274" neck with 14thou thick necks and a 243 bullet.

That is very thick by SR BR - PPC dimensions but I have not found any accuracy losses and they sure take a beating well.

Jerry
 
I have a related question...

What are the most commonly used bullets in this cartridge...

throat length is my concern... I plan on ordering a reamer from Dave..

See article: http://www.6mmhot.com/6.html
 
Dennis, problem is what type of bullets we can get.

Most will want a 105 as a min with the 115/117gr bullets the most desired.

May as well push the highest BC bullet out the pipe.

Suggest you get the reamer for the 105 Berger or 107gr MK then a second throater for the 115/117gr.

Odds of many shooters getting the DTAC's are slim.

Jerry
 
ooops...

I should have been more clear - it is the 6.5 x 47 Lapua I was thinking of.. (the link was about the 6.5)...
 
People shooting the 6.5x47 that I know are shooting primarily the 139 Lapua or 142 Sierra at 1,000 yards; some are opting to go faster with lighter bullets at 600 yards with the 130 Berger vlds or the 123 Lapua or 123 Sierra SMK.

JeffVN
 
6.5 x 47

Hi Ned,
Cant help you much with the 6-6.5 but I built a 6.5 x47 heavy barrel hunting rifle last year and use 120gn ballistic tips and the rifle is the most accurate rifle I have ever shot and is pure pleasure as far as recoil & noise go. I use it out in Central west slopes of NSW. Shane
 
I am also running .2705 on 6x47 necks with 105 bergers. I don't turn the brass. I use a .268 bushing to load.

41.0 RL19 touching the lands. Most accurate rifle I own - bulit on a Bat with a Krieger. shoots ridiculuosly small groups at 300 yards - have not shot it further yet.

I really think the 6X47 is the 6mm answer.

.272 chamber. I use a Forster full length die to neck down. It has a .267 neck built in - makes it easy and nicer results than using bushings to neck down.
 
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I used the reamer straight off the 6mmhot.com website with a .275 neck. Although I have found the cartridge quite finicky in terms of what powder to use, N560 has proven to be just the ticket for 105 Berger VLD's. 39 grains are getting me 3050 fps with a 28" Krieger. That's enough to make it faster than a 6BR but not so hot that barrels wear too fast.

I have found the quality of the parent 6.5 brass to be disappointing with the neck wall thickness being quite inconsistent and it requires generous turning to even it out.

over-all, the cartridge has proven to be excellent in 5 and 600M shooting and it is a surprisingly easy and accurate cartridge to shoot at 1000M
 
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