6mm Super Lr/ super x loads

[D-mon]

Hi guys,
I m brand new to this forum.
I probably don't have as much experience as most of you, but I might have a little trick to reduce the amount of cave in just below the shoulder when forming brass.
The other day I was playing with a set of 6.5 creedmoor dies and some 308 brass(federal shot once). Brass in 6.5 creedmoor is not available here in nz.
I removed the spindle and olive from the FL sizing die.
I started to resize the first few brass and all of them where cavin in.
What I did next with the next lot of brass was pushing the case in the die till I felt a little resistance when starting to shape the shoulder,drew the brass out of the die, turn the case 180degres,push it back in a little bit more in, move it back,turn the case 90 degree,push it in a bit more, move it back and then another last turn at 180 degree and a last push in the die to finish.
So the sequence is something similar to 12 o'clock,6oclock,9 o'clock ,3 o'clock .
Lub is essential of course.I use Lyman (I never had. Chance to try the others).
The next step is using a k and m mandrel to size the neck back up and turning the neck down with a k and m neck turner.
I do not know how well that trick might do for you and your 6mm brass.
But please give it a try and let me know how it goes.I would also be glad to know how it work with Lapua or Norma brass.
Good luck.
Nic

 

[johara1]

John, I have not decapped on a sizing die in 20 years..... When the thickness of the neck shoulder area is thicker than the body by almost a third it has to happen. ....jim

 

[coyotehunter]

Finally got my rifle all together Friday and started the breakin i process what a joy that is. Can't wait to start load development.

 

[Heavies]

Finally got my rifle all together Friday and started the breakin i process what a joy that is. Can't wait to start load development.

Keep us updated! Very interested in how it does!
Thanks
-B ;D ;D

 

[coyotehunter]

Will do. Got her all cleaned up for shot number 11 today but the weather here prevented that. I put a Sightron SIII 16x42 will modified mil-dot. I really like this scope and hope it serves me as well as I've read. Any one have any ideas on how many one shot and clean I should do?

 

[johara1]

I just fired the 6th time on the 6mmSLR with Lapua brass and no donut........ The barrel keeps making copper so i am firing single shots and cleaning but it hasn't quit. The perfect time to try this and it worked. I will start again tomorrow and see how long it will go, maybe the primmer will fall out first.....jim

 

[coyotehunter]

She is finally getting broken in. Shot number 29 yesterday. Showing some good signs of being a shooter. Will try some Hodgdon Hybrid 100 tomorrow. It is working well in my smiths rifle. He is getting better velocity with less pressure signs. He shot his last Sunday with 4 out of five shots in a 5 inch circle at 1014 yards.

 

[coyotehunter]

She is looking good. Hodgdon Hybrid 100 showed some potential today. Shot two five shot groups at 400 yards. One measured 1.5 inches the other was 1.25 with 3 shots stacked on each other. With 41.5 grains of powder my average velocity was 3087 with an extreme spread of 9fps the second load and better group was 42 grains with an average velocity of 3174 and an extreme spread of 12 fps. Using Federal 215m primers.

 

[buffybuster]

She is looking good. Hodgdon Hybrid 100 showed some potential today. Shot two five shot groups at 400 yards. One measured 1.5 inches the other was 1.25 with 3 shots stacked on each other. With 41.5 grains of powder my average velocity was 3087 with an extreme spread of 9fps the second load and better group was 42 grains with an average velocity of 3174 and an extreme spread of 12 fps. Using Federal 215m primers.

I use H100V also in my own version of a 6SuperLR. Those charge weights/velocities precisely mirror my own results.

 

[TheBlueEyedBear]

Coyotehunter,
That is great results. Mind if I ask what bullet you are using and seating depth.
Thanks.

Barry

 

[coyotehunter]

Blue Eyed Bear, I am running 107 sierra's at 2.860 inches. Just this morning we tried some reloader 17. With 42 grains it shot 3252, 3252, and 3248 and was stacking bullets at 500 yards. Also tried some 87 grain hornady vmax's but still need to do some load development they were running 3500fps. The Reloader 17 was behind the 107's seated 2.840 with CCI Mag primers. The gun is turning out to be a great shooter. Backed off the H100 to 41.8 grains and it shot 3182, 3182 and 3173 the reloader 17 was actually grouping better. Just to make your day when we got to the range there was a guy with a 50-90 sharps shooting 640 grain bullets about 1300 fps. He asked me if I wanted to shoot it and of coarse I said yes. That thing rocked my world. However we were shooting a ram silhouette at 750 yard with open sights you talking about a blast. Way to much recoil for me lol.

 

[TheBlueEyedBear]

Thanks COYOTEKILLER.. Great info!! I'm with you on the Sharps; way to much recoil for my comfort level. I'm the guy that puts a limbsaver on his stock, a muzzle brake on the barrel, and, a mercury recoil reducer in the stock of a 6SLR. Yep, I hate recoil.. ;D

 

[coyotehunter]

It was fun to shoot and I can say now that I am a real man because it took real men to shoot those things in the old days. However I will stick with my 6mm's. I think the first shot may have broken my nose it's very swollen and brused all around it. I didn't let that stop me though hit the ram 2 out of 5 shots at 750 that made it worth the pain.

 

[johara1]

I went to the range to run some loads with the 6SLR and it shot a .170 with 43.5 gr. of 4831 sc. and a wolf primer and in the fine Lapua brass. I may just take it for a ride to a 1K match in WV.......jim

 

[TheBlueEyedBear]

Looks like we are going to have some good shooting weather here in Montana next week. I have 52 rounds of different Cutting Edge 100gr bullets loaded up for testing. I guess I am just going to have to go back and try that Lapua brass again. ;D
Barry

 

[coyotehunter]

Where do you get those bullets have read some good stuff about them.

 

[TheBlueEyedBear]

I purchased some last year because I too thought they sounded real good. Unfortunately they were way too long for my chambers. Turns out that they had a new production run and the owner sent me three different flavors to try. Deifferent lengths, different ogives, etc.. Soooo, if I can believe the weatherman, we are supposed to have temps in the upper 60's next Wednesday and NO rain (or snow). I'll believe it when I see it. There are some areas in the immediate vacinity that are at 300 and 400% of snow pack for the year. I am glad I live at the foot of the mountains and not downstream. The Flathead river is really starting to swell, but the bad news is the runoff has really begun yet.
Sorry I got sidetracked. I will post result from testing after Wednesdays shoot.

 

[coyotehunter]

Let me know how they perform I really want to come up there and do some shooting someday. Ive always wanted to shoot across mountains.

 

[scott_at_vortex]

Russ, I just tried form some new WW brass into SLR and the body caved in, it never got down to size. I cut one open and the body wall thickness is thinner than the neck. Tried Lapua and it formed perfect. So i dug out some old WW brass and it form perfect,cut it open and it's almost half again as thick as the new stuff and the same thickness as the Lapua body..........jim

johara,
I have the same problem, I bought 1000 pieces of .243w-w brass just a few months ago and it buckles pretty bad. Just for kicks I went and bought a cheap box of winchester ammo from walmart and pulled the bullets and that brass sizes just fine. So I figure I must have just got a bad lot. So I too have just been running with the Lapua brass. Yes it is a little bit of a pain, especially since I built this gun with a no turn neck, but I have just been turning into the shoulder a little.

Sorry about the slight hi-jack here guys. I would post some load data ,but I am actually running a 243 BR-K .(very similar, but different )



Scott

 

[johara1]

Scott, I don't have a problem any more i went to Lapua brass and it's head and shoulders above WW. If your looking for better accuracy,you have to turn necks and i went with a .272 neck and the Lapua brass lets me do that. I fired one piece of brass 12 times during barrel brake in on a new 5r Bartlein and it's annealed and in the rotation with the rest of the brass. This load of 43.5 has always shot in mid too high one's at a hundred so i guess the old story that Lapua won't work isn't a fact of life any more.........jim