6-284 ready for delivery

[kendoka66]

Hello all you 6x284 Fans,
I liked the 6x284 so much I,m on my third barrel. Retumbo is a very good powder for the 105 thru 115,s. I shoot the long heavy Berger VLD as fast as I can in my 31" Krieger barrel with a 1-8 twist. 54.0 is max. in my rifle with both bullets. Not one of the other barrel would digest anywhere near the loads that some of the loads listed. I think some of those loads have very high pressure,s. The 115 will out shoot the 105,s at long range, the high B.C. is just that much higher. Also the wind does not affect them as much at distance as the 105 or 107,s.

Good safe shooting to you all.

 

[Ironworker]

I'm going to order a Medium Palma bbl from Brux tomorrow 28" 8" twist. Currently my 6x284 has a 26" Hart varmint 10" twist. Took my 7 wsm #4 contour Brux bbl rifle into NV desert and was able to hit tin cans at 620 yds. Tomorrow I'll try it shooting 90gr Nosler BT out of current 6x284.

 

[bozo699]

Retumbo is to dang slow. That ES was what happened to me using IMR 7828. Try a magnum primer with that Retumbo,in order to launch those 105gr missiles

I use 215m primers in all my 6*284 heavy bullet loads.
Wayne

 

[LRPV]

I tried some CCI 250 with the Retumbo and I still came up with some rather larger ES. Also came up with some large Chrony numbers. Gave up on the VLD's for a little bit and replaced them with 107SMK. About the same numbers velocity wise but they seemed to track a little better. I thought I was really on to something with a 3/4" triangle at 280yds but after further inspection, it was a fluke. I got all my brass fired once now, 96 rounds down range. Barrel is cleaning up nicely. Since I'm at a stopping point, I think I'll see how A-maxes do and see if they hold together before going back to the 107SMK. Are you guys jumping or jamming with the 107's? I was around .010 off with them. I re-learned that I am supposed to order at least bushings with every size die to even get an idea of what to get that will actually work. It is aggravating to think you have a hold on how to guess and then completely miss it. I had to use the standard FL die again since I gotta go Monday and there is nobody nor any place to get a bushing from around here. By the way, what are you all using for bushing size if it applies to you? I end up with a 274 loaded and a 276 fired.

Ironworker- that taper balanced out pretty good on this rig, with the adj. comb
Kendoka66- I hope they aren't running that hot, a customer of mine had one built into a 25-06 years ago and it grenaded on him with factory ammo about 3 years ago. Luckily no one was hurt, including the cow...

The quest continues
Jason

 

[Ironworker]

Busing should be .002 smaller then fired case.Frustrating finding proper seating depth,shooting A-maxs out of my 7mm wsm I found that .020 off the lands was the sweet spot.Still don't have an accurate seating depth with the Berger VLD..... Ordered Palma bbl from Brux today,glad I learned of it from reading your post.

 

[DOGCAPPER]

I shoot RL 22, 49.8, CCI MAG primer, Berger 108 target...Dont run chrony..Just ladder and group...I stole a 400 yard target in the last 400 600 800 match...Highest crosswind on a Kestrel was 32 mph....Most any of us had ever shot in...Made the stock from red oak hobby boards from Lowes...Painted various snake colors with snake skin pattern over it...Yes,, It looks crappy but that was the idea....LT

 

[LRPV]

Went through the 105vld, 107SMK, 105 Amax. Tried 4831sc, H1000, Retumbo. Tried CCI br2, CCI200, CCI 250, Fed210M. I was pressed for time to get something put together to take it out to pop some Pdogs. I ended up with the 105vld with what I'm calling a .010 jam, CCI 200, 68gr of Retumbo. According to the "ultra reliable" shooting chrony this is getting me an average of 3365fps with it set 20' from the barrel. It worked good enough for the little amount of time I had to get ready but I really thought that I would find something more consistent so the work continues. It's so hot here right now that I'm going to wait till it cools off some before I try anymore.

 

[TooTallRosenwald]

I have 2 rifles built by Chris @ Long Shot Rifle. Both of them are Hammers.

 

[johnmyers]

You might want to try some Ramshot Magnum. I tried Retumbo, H1000, H4831 with 107s and 117s and Magnum does the best with less bbl heat.
John

 

[Ironworker]

Hey LRPV how is your load developments going ? Soon my Brux bbl will arrive same length ,contour and twist as yours .

 

[LRPV]

Haven't shot it any since I got back from P-dogging. Been TOOOOOOO hot until today. Supposed to cool off a little bit so might get back to it. Looking at buying an Oehler 35P so that I can put some faith in my chrono numbers. Talked to Berger through emails and got what I believe to be some good advice on varying seating depth. I was initially moving .010" and then when I thought I was close dropped to .005 changes. I was told to try .003 increments as that could make quite a difference when fooling around right at touching to a little in or out. 107 SMK looked promising but I was pressed for time, 105 Amax seemed a little harder to push and showing pressure at lower velocities than the SMK or VLD.
Jason

 

[Catfish]

I have a pair of 6-284`s, but both have to slow a twist to shoot the heavy bullets. :'( Anyway, Widener`s has 2 surplus powders than are both similar in burn rate to AA 8700, which has worked well in both rifles. The price is $ 49 for 8 lb and if you buy 6 jugs they will pay the hazmat fee. A real bargin for the guy that can use a powder that slow. I bought 6 jugs of each, 96 lbs. of powder, but I have enough rifles that I will get it used up. First time I ever spent $ 644 on powder at 1 time.

 

[RJinTexas]

Go with Lynn's suggestion and give RL22 a try. I wish I'd have tried it much sooner because by the time I got around to testing it my barrel was about to go south at just short of 1200 rounds, showed heavy fire cracking and my groups were starting to open up. I'll not build another 6-284. I elected to replace it with a 6AI which is still shoot great after 1500 with very little fire cracking and shows about average throat erosion. I'm also using RL22 in my 6AI.

RJ

 

[wildchild]

Jjust out of curiosity what does the throat move.. say after 10 shots with this round???
I would venture to guess that about every 10 rounds ya need to the bullet moved out .001 to chase the lands.
Not to change the subject but a dude at a tactical type match had a 300 ultra shooting 155's and in his ammo box every five rounds were segregated and moved out .001 to chase throat erosion to shoot the match and be competitive.

 

[johnmyers]

I have used H4831, H1000 and Retumbo in mine with heavy bullets and Ramshot Magnum outperforms all of them and the ball powder is not as hot.

 

[Ironworker]

More I think about ,rather then chamber for 6x284 maybe I'll go with 6mm AI ? Greater barrel life .

 

[RJinTexas]

Ironworker, the 6x47L is also a great round very capable of producing sub 2.0" ten shot groups @ 500yds with the right loads. It's also a extremely easy case to form just run 6.5x47 blue box Lapua brass through a full length 6x47L die with the expander button removed then run a K&M expanding 6mm mandrel into the neck to uniform the neck diameter. I then use a Redding type "S" nk die with a .269 TiNi bushings it will produce a neck dia of .2675 which will give ya a loaded round with a neck dia of .2695. When shot in a chamber necked .272 ya end up with a great shooting no turn neck wildcat which shoots Berger 88gr FB bullets extremely well in a HV 28" 8tw barrel. Good luck with what ever you choose.

RJ

 

[Ironworker]

I will consider that option 6x47L

 

[WyleWD]

+1 on RJinTexas's post.

I love the 6-284 to death, but recoil, powder usage, barrel life, etc. compared to the capabilities of the 6xc and 6x47 was enough to make me go that direction.

(I still do miss the 6-284's on a given day though). WD

 

[LRPV]

221 rounds down the tube with nothing to show for it yet. 6x47Lapua, 243, 6SLR, 243AI, 6mmAI... they are all looking pretty good right now. I think my next rifle will probably be a 308 and shoot factory ammo. I've never been so upset, frustrated, confused, or disappointed about a firearm before. Bozo's 48.5 (mine was actually 48.4) H4350 107SMK load showed some promise at 3250fps today but I'm pretty sure it will turn into a shotgun pattern just like every other combo has when I try it again. I think my MX2000 might just shoot a tighter "pattern"... Every time I find a good combination and try to prove it the group opens up. I have factory rifles that are a lot more consistent than this thing.

I would like to run some numbers past you guys to see how mine jives with yours.
Chamber neck dimension is supposed to be .276
Fired necks measure .275
Loaded rounds measure .274 as I have not turned the necks.
Is this a little too tight and could it be causing the erratic behavior?

Also, my throat is what I'm considering pretty short as the boat tail is coming in below the neck shoulder junction and it has been my experience in the past that when that happens it is really hard to get much consistency especially in seating depth. The bushing in the FL S die doesn't even attempt to get close to sizing the whole neck let alone sizing far enough down to hold the fat part of the bullet. The quest continues.
Jason