6mmx47 lapua .100 thousands short 40° shoulder

[Stan Taylor]

Well here is a minor update time is of the essence I changed seating depth a little in the lands out of cold barrel shot five shots at 125 yds extreme spread is decent this barrel was a dasher I shot this past season I just rechambered to my improved 6mmx47 short 40 degrees 3rd firing on the brass velocity is where I want at 34.6 grains of R15.

 

[Stan Taylor]

Gabe 22br I will definitely keep you posted on progress because I think you have a good idea of where I am going with this case I have brand new barrel ready to chamber for this case if it continues to give me good numbers the accuracy part will come thanks for your interest.

 

[Grimstod]

Do you have to trim the necks at all? Looks very promising.

 

[Stan Taylor]

Do you have to trim the necks at all? Looks very promising.

I will measure case length tommorow if I remember correctly first 2 firings case length never moved a very good question though I appreciate you asking a good thing to monitor.

 

[Grimstod]

Actually i thought it was a case you were shortening by .100. I guess then you must be taking a dasher and making it .100 longer? Maybe i am totally off. Excuse my ignorance. I am familiar though with the Long Dasher that is based on the 6.5x47.

 

[Dstroud]

Would you check base to shoulder length also

 

[Grimstod]

Is this what your working on?

 

[Stan Taylor]

Would you check base to shoulder length also

Base to bottom of shoulder is 1.370 thousands neck length about .282. I hope that helps I can get better numbers tommorow.

 

[Dstroud]

If you are familiar with the long dasher could you tell me how much more powder like RL-15 that case would hold more than the dasher at the neck shoulder junction Thanks

 

[Stan Taylor]

Is this what your working on?

Yes based of of 6.5x47 lapua brass setting the shoulder back an trimming a 100 thousands of the neck overall length is 1.765 thousands I also have the same thing in a 6.5x47 lapua shortened .100 on overall length 140 gr hybrid runs right at 2800 fps with 36.4 grains of Reloader 15 .

 

[Stan Taylor]

Here is a pic of case before an after trimming an I use a cut off saw to take care of part of the length an then I trim to length.

 

[Stan Taylor]

If you are familiar with the long dasher could you tell me how much more powder like RL-15 that case would hold more than the dasher at the neck shoulder junction Thanks

I will check that out tomorrow an give you best answer I can thanks. Well after I filled case up to base of neck it was about 40.5 grains of Reloader15 here is a reamer drawing of the short6x47 40° but the current case I am testing is about 55 thousands longer than this drawing that was the original intent on drawing but a little more trouble to make.

 

[boltfluter]

Stan,

That is one good looking case. Good luck with this endeavor.

Paul

www.proprecisionrifles.com

 

[Clancy]

Very cool, 6mm Goldilocks.

Dasher was too short, long Dasher too long.... but this one is juuuust right .

 

[Stan Taylor]

Base to bottom of shoulder is 1.370 thousands neck length about .282. I hope that helps I can get better numbers tommorow.

Very cool, 6mm Goldilocks.

Dasher was too short, long Dasher too long.... but this one is juuuust right .

That's cool I am looking for a good name I love trying to develop something more efficient that's what keeps the wheel a rolling for perfection. PS I used to have goldilocks but all gray now

 

[Clancy]

Well I’m all in on this idea for real... very cool.

If you decide to share it, I just may have to have one!

 

[Stan Taylor]

Well I’m all in on this idea for real... very cool.

If you decide to share it, I just may have to have one!

As weather gives me opportunities to tune I will keep everyone posted I shot the 6.5x47 version very well I hope this is the ticket to the 3030 fps node without brass fatigue.PS the case's are not that hard to make.

 

[tclaunch]

I am all ears, getting questions from friends on the particulars. I told them to call Stan the man!

 

[Stan Taylor]

I am all ears, getting questions from friends on the particulars. I told them to call Stan the man!

Tim you will be one of the first to know my conclusions in a few days supposed to have some fair weather this week between working on my shop an weather I will test some more sir thanks for your support on this project.

 

[gunsandgunsmithing]

I like it Stan. Keep us posted