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Just ordered my first 6BR barrel for my AI AT. Have been playing wit the 6ARC with the 105s from Berger. Now just have to wait until it comes in.
If you haven't already, get a HRD mag kit and something to bend the feed lips with. I hacksawed a slit into a piece of scrap wood. It might take some tuning to feed well.
The MDT mags work fine.How about the MDT magazines has anyone tried them. But I was looking at the HRD kit as well. the barrel blank is going to taken a little bit to ge. I ordered it in a left hand twist.
Use AI mags, AX or AW with HRD spacers for BR cartridges.Which MDT magazine do I need to order for my AT with the 6 BR? Mine is the double stack
So I'm confused? You say you can switch from 6BRA to 22BR with just the caliber conversion bushing? That's not what I was told from SAC. They said if you have a 6BR die it will only do BR like 6BR / 22 BR / 30 BR.... NOT 6 BRA / 6GTYes…actually loading on one right now. About 2k rounds loaded on it (6BRA) and very happy with it.
I have two 6 BRA rifles and a few thou difference in the headspace. The 0.001 shims make that an easy, quick, repeatable adjustment. No playing with the lock ring.
Also, just loading for a 22BR. Caliber conversion was a $30 bushing. Done and done.
Consistency and runout are both great. Also the base sizing is a bit tighter on the case. It eliminated some clickers I had running some brass between barrels/rifles.
A bit higher in cost, but the quality, adjustability and caliber swaps (w/in cartridge family make me happy with the purchase.
The one negative is I have not been able to get a decapping mandrel—rare as hens teeth. That would be a nice addition to my workflow.
I also got the seater die—made a chart for settings and threw SIX micrometer seating dies in the not being used drawer.
ZY
So I'm confused? You say you can switch from 6BRA to 22BR with just the caliber conversion bushing? That's not what I was told from SAC. They said if you have a 6BR die it will only do BR like 6BR / 22 BR / 30 BR.... NOT 6 BRA / 6GT
Please confirm
Thanks
So I'm confused? You say you can switch from 6BRA to 22BR with just the caliber conversion bushing? That's not what I was told from SAC. They said if you have a 6BR die it will only do BR like 6BR / 22 BR / 30 BR.... NOT 6 BRA / 6GT
Please confirm
Thanks
Oh my, this will be an adventure. Lapua 6BR next to a 300 PRC.
Out of my AI AX 26” Win Tac 6BR 30.4grs Varget, BR4’s, 105gr Berger HT, 1.645 CBTO moving at 2910fps have been absolutely money
View attachment 7659525
After waiting a year for my AT-X to arrive, I was finally able to get it out to the range, albeit with factory Lapua 105s. It has the WinTac 26" 6BR barrel and will certainly outshoot me.29.8grs was 2850fps over 6rds with SD 4.2 ES 10
Question as I want to get this correct. I'm going to use the SAC modular die for reloading 6BR using Lapua brass, Berger 105s and possibly Hornady 108s. While I have bushings for the SAC, I want to add a mandrel to the process. Since the OD of both bullets are .2430, I assume I go -.002 and should buy a .2410 to get the right neck tension? TIA.
Question as I want to get this correct. I'm going to use the SAC modular die for reloading 6BR using Lapua brass, Berger 105s and possibly Hornady 108s. While I have bushings for the SAC, I want to add a mandrel to the process. Since the OD of both bullets are .2430, I assume I go -.002 and should buy a .2410 to get the right neck tension? TIA.
Great story , good to see the old rig still hanging in there . Interesting that you mainly neck size , what brand neck die do you use ? ThanksBeen shooting an old 6 BR I bought from an old bench rest shooter. just a rem 700 SA with a heavy Krieger barrel that was shot out when i bought it and i have put over 2000 rounds through it, probably has over 6000 through it. Throat and first 5 inches of bore look like a dried up mud lake fire cracked to hell and no rifling. been shooting berger 68 flat bases its whole life and i switched it up to some 65 berger boat tails and 70 sierra blitzkings and it made my jaw drop. gun is funny it has some character, stock is cracked in bout 3 places, the bubble level he super glued to the stock is bout a half a bubble off, it wont start shooting good till the barrel gets hot hot hot. like 20 rounds in. its ate molly coated bullets its whole life. ive only cleaned the barrel 3 times in 2000 rounds because it will shoot like absolute booty hole for about half the year after a cleaning. eats about 50 bullets a week every Wednesday in a local shooting club benchrest match and still wins quite a few shoots. i have shot the same 100 brass for about 20 reloads, neck size only and have only full length sized once to bump the shoulder. have never annealed the brass, and have only split one case. havent even had trim for the last 2 years it just stays the same length.
I use a Redding type s bushing die.Great story , good to see the old rig still hanging in there . Interesting that you mainly neck size , what brand neck die do you use ? Thanks
Thanks, I will give that a try .I use a Redding type s bushing die.
It's dependent on your chamber because they typically work better with a 40 to 80 thou jump.I'm planning to work up a load using 108 ELD's as I'm having a hard time consistently finding 105s hybrids. What everyone finding for seating depth on the 108s?
I loaded some the same depth setting on my die as I loaded for the 105 HT. Fwiw, I’m jumping the 105’s .090, so that might be in the .080 range with 108? They shot quite well there. Good luck and please report back what you find.I'm planning to work up a load using 108 ELD's as I'm having a hard time consistently finding 105s hybrids. What everyone finding for seating depth on the 108s?
Anyone shooting the Barns March Burner 112's? If so what's your barrel twist, powder and velocity?
Clean the darn thing. The whole not cleaning thing is gonna get you only issues.Amateur PRS fun seeker, second attempt at getting a rifle together.
Started with Virgin Lapua Brass (things actually improved at 1x firing)
108 ELD-Ms
BR4 / 450s / FGMM / Rem 7-1/2
30.1 SW Precision / 29.9 Varget - I was told they're pretty close to identical, and I can confirm.
10 thou off
2779-2784 fps, LabRadar
Impact RH
Bartlein 26" MTU
Manners PRS-TCS
Atlas BT10, or V8 - the one with the spinny legs?
TT Special, 14oz.
Kahles 6-24
ECTuner on "0" - never touched it. No need with these groups.
WC OG Gamechanger, Pint-size Heavy WC GC, MFC - like the PHGC for shooting groups
Cold bore: .2-.3 high, .1 left.
307 rounds to date, haven't cleaned since break-in. Will swab for carbon prior to next range session. The plan is to swab carbon every 3-400, and take back to bare metal at 1500, or when/if groups change.
LEWilson bushing sizer
LEWilson 6mm Mandrel die
LEWilson arbor seater, no force pack.
K&M Flash hole uniformer/debur small hole pilot
K&M Precision case neck Chamfer tool
Annealez each firing (so far, 1x)
Wet tumble clean
RCBS Chargemaster Lite - verified with my Dillon beam scale - it throws within .1, reliably
Someone I trust said to start with 29.6 of Varget at ten thou off. I had precision, and they said try it similarly but drop some just to be safe. I did, and it just spit fire from the get go. Went for break in with 29.0, 20 rounds with some cleanings. Threw 120 through it and waited for the speed-up. Never noticed it. Loaded a charge ladder from 29.6 to 30.6 in .1 increments, and 30.1 was the ticket. 170 total rounds, most of that was chasing the "speed up". Once I was sure velocities were stable, tune was done. Go figure. I repeated the OCW with Varget last week after finally getting some, and it prompted recording the result here.
These are as close to identical in my rifle as I think I can personally get. I will load 10 of each, put up some paper at 600, and test dispersion. Velocities appear the same, within margins. The SDs are best with 450s and the FGMM, though only slightly. Single digits for for the most part for each of the primer choices. This barrel is hard to dislike, it shoots all of these recipes just like the others, and has no issues holding point of moa plate downrange with each.
Declarations: Two groups were fails on the Labradar, I'm not as good at using it as I should be; The paper and plates confirmed their similarity though. Nor am I a pro shooter by any means. This all happens with an amateur at the wheel.
All my actual testing to date is with groups of 10 on paper at 100, followed by ranged confirmation on plates. It's hard to tell the difference at 100, the larger groups were 3/4 inch, some were much less. Either way, for my purposes I'm impressed. The resulting bullet-meets-plate at 800 is a breeze; to say I'm happy would be an understatement. My interpretation is that in any of these loads, if I miss the target, it's my issue not the equipment's.
I seem to have found a node at 2780 (mostly by accident and coincidence), and am happy with the results. I'm not trying to win the speed game. Two tenths of a grain on the charge either way, and there seems to be little or no real-world change. This confirms what I've heard about the wide nodes present for 6BR, especially at these velocities.
The only real outlier is the REM 7-1/2s (also the 3/4" groups), their SDs are slightly higher at 12. I suspect these will be reserved for the gas guns anyway.
I have plenty of 450s, so that will likely be the primer of choice - again, go figure. For my next barrel I will most assuredly buy 500 same lot brass, not 300, and 3-4k projos, rather than 1k.
I was encouraged to seek another speed node above this one. Estimating 2890ish? May do so. Not sure if it's necessary though, so I may not. Nod, thanks, and shrug.
I went with 6BR for the "easy-mode" reputation, so far it's proving very true. On a good day, I'm pretty sure even I could take this rifle and shoot with a pro and have some real fun.
Cheers, Hide
Running 26” Stuteville 1-7.5 twist barrel. Planning on Varget with CCI 450s. Looking for some starting loads for 107 SMKs and 105 Nosler RDFs. Any helps appreciated. I’ve tried searching but not seeing a lot on 6br loads so I figured I start a thread. Thanks for any help.
+1 on 223 bolt guns.I don't really see an advantage with the exception of recoil. As long as you're not trying to buy a ton brass it could more more affordable over the long term buying bullets. Most people don't shoot cheaper and more available ball powders in 6BR but no reason you couldn't. Especially at 200yds. Try TAC, A2520, CFE223.
.223 bolt guns are more fun than than most people realize. And the component choice makes for a really easy and affordable swap. As long as you have a .223 bolt face to start with.
I made the jump myself and the 6br is crazy accurate and easy to tune. Brass never grows and should be good for an estimated 18 firings or so. I got me a Harrells sizing die and Forster micrometer seater. Annealing I got the annealeez. I hear most guys don’t anneal the 6br. My chamber neck is .272 so it barely works the brass. Now that I think about it I should have made the 6br jump a long time ago.308 shooter who comes in peace
I'm thinking of putting together a 6BR to shoot at my local range (mostly 1-200 with limited 300).
I have a decent enough stash of reloading supplies and equipment for 308. My question is if any of you have been in my shoes does it make sense to try a new caliber?
I'm not made of money but I would like any advantage I can earn over 308.
Thanks!
I searched the thread for cfe 223 but didn't find anything. I'm interested in reading how it does.One of the guys has done some early testing that seems to indicate that CFE 223 works well. I don’t know if he’s done further work with it yet.
H4350Has anyone tried with success, Hodgdon powders other than Varget or H4895 in the 6BR? I'm interested in trying some CFE 223 as its burn rate is near the Varget area. So is Leverevolution, which my 6Arc seems to enjoy.