6.5 x 47 lapua brass trim question

[1GoodEye]

Hi all, been lurking about for quite awhile and want to thank everyone for the great information available on this site.

I have got a question on Lapua brass. I am shooting a 6.5 x 47 lapua and this is my first go with the Lapua brass (which has been fantastic to work with). My question is how many firings are you putting on your brass before you have to trim, and what length are you trimming to (1.85 or 47mm).

I have brass with 2 firings on it that is not back to factory length yet. I am not bitchin here as the rifle shoots fantastic and I am not concerned per say about the length, just curious really. My usual routine is to trim my brass all to uniform length after a couple of firings to the suggested COAL. Load/reload information is as follows with some rifle specific and chrono information if interested.

Remington action trued and tricked
Chambered for the 130-140 boolets (don't have the chamber specs as that is apparently the top secret mojo from the builder

)
Krieger tube at 20" 1 in 8
McMillan A1-3 with TR bottom metal

Load info:

H4350 at 41.5
Berger 130 vld
Loaded to magazine length
Only thing done to the lapua brass before first load was to uniform the primer pockets and check flash holes (not neccesary).

Forgot to add: Redding competition FL dies with .288 bushing and just bumping the shoulder.

This load is safe in my rifle. Start low and work up.

This load produces an average of 2820 fps in the 20" 8 twist Krieger and is very accurate out to 600 yards so far.

Thanks for the input and thanks for the great information on the site.

1GE

 

[RTH1800]

Re: 6.5 x 47 lapua brass trim question

Sir,
Sounds like a top notch set up. If you want to know chamber length, you can get a metal stud that fits into a modified case, (cut off 1/2 neck) and measure it. Sinclair International, cost about 5.00 I think. Chamber length gauge 6.5 cal.
+1 on the Lapua brass. All I do is weight sort it. And that is seldom nessassary. I just do it out of habit. I trim to the longest length that will uniform all cases and stay .010 short of the actual chamber length. Some of the top long range shooters trim every loading. I do not as I can see no difference. Every chamber I have ever measured has been well over spec. I would say .010 or more average. Even on "match" type chambers.

 

[pinzmann]

Re: 6.5 x 47 lapua brass trim question

I have been shooting the same 50rds brass for over 20 reloads now and the length is 1.853. Never have trimmed them. I'm shooting 37.3gr of R15 which gives me around 2900fps in my Bartlein barreled Stiller. I don't think I trimmed them at first.

 

[Jedi]

Re: 6.5 x 47 lapua brass trim question

Bro
OUSTANDING RIG
need to go ck on mine pert near same specs but i,m a lefty

41.5 under a 130 rocks in my match rig

however in my 20" rig i run 123 scenars

I match my brass OAL to my chamber -.005

 

[1GoodEye]

Re: 6.5 x 47 lapua brass trim question

rth1800 Thanks for the input. I do have the Sinclair gaiuge for chamber length and have checked the length and those dimensions are known. Actually I was shocked at the amount of "jump" I have to the lands, there again with the results I get, I am not complaining. Thanks for the input and the Lapua brass is amazing.

pinzmann Thanks for the reply. Its good to know that someone else is seeing the same good results on the brass with similar velocities!

Jedi Appreciate the compliment. The rig is a Tactical Rifles M40A1-3 and I am very please with the rifle and love the 130's as I am not really chasing any speed, just want to know they go where I point them.

Oh, and check the tag line. I am a lefty as well!!

 

[squirrelsnpr]

Re: 6.5 x 47 lapua brass trim question

GoodEye-
I'm shooting a 6.5x47L as well and trim mine to approx. 1.83 (I don't have my notes in front of me). I measured alot of new Lapua brass and none were at the 47mm mark, all were shorter. I don't know what the length of my neck is in my rifle either, but this seems to work out fine. I anneal my brass after each firing and they seem to be doing great, no split necks etc.

 

[Jedi]

Re: 6.5 x 47 lapua brass trim question

hearing good things about the 123 AMAX

 

[1GoodEye]

Re: 6.5 x 47 lapua brass trim question

Jedi

I heard good things about the 123-amax as well. I have some of the smk 123 but have not tried them yet.

Mitch

I will probably do the same as the trimming goes, if I start to see some stretch on the cases. As it is, if they ain't growing, I ain't trimming.

1GE

 

[coldbeerchief]

Re: 6.5 x 47 lapua brass trim question

I haven't had to trim my cases.
one batch has 4 firings of 41.8 H4350 and 130 VLD and they still measure 1.850 - amazing!