wilkup
Well-Known Member
You like those Bergers in the ARC?
6mm ARC powder… Leverevolution?
- Thread starter wilkup
- Start date
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So I tried to go higher in charge but it would act like it was getting pressure signs, so I backed off to 25.5. I was getting 2620 or so in a 24" barrel, bolt action AR from uintah.
Sdvldog1371
Well-Known Member
Haven't used them yet. I just have a bunch for the other 6mm flavors. I have a dasher and GT as well. I've been fiddling with them all, here and there anyway.
Sdvldog1371
Well-Known Member
Nice. I have a 26" bolt and I loaded the batch to 26.7gr...supposed to be under max...I guess I will be inspecting the cases as I go to make sure I'm not toasting them.
wilkup
Well-Known Member
How's your ARC compare with the GT and Dasher in the accuracy department? Is it a bolt or AR?
Sdvldog1371
Well-Known Member
Bolt action.
Well, I can't really tell you. I shot a bunch of Hornady eld-x in it to break the barrel in. Then I converted a bunch of starline 6.5 Grendel and fire formed it all. I haven't done a proper load development for it. However, it was shooting ½" 3 shot groups at 100 with the Hornady ammo....which, has to be the only rifle I have ever owned that liked Hornady ammo.
I did all my fire forming of starline with 90gr factory seconds from midway and used cfe 223. I haven't done anything else yet. As long as I'm not over pressure tomorrow, I will check velocity and run seating depth testing for the 108's.
The dasher is EASILY my favorite, Lol. I literally have just guesstimated loads together, ran a seating depth test and let it roll with ridiculous results. I had a batch of virgin brass and 105 burgers slapped together and the ES was 43fps with an SD under 7 for over the full box. Every box of virgin brass just gets a CCI 450, and 31gr Varget under the 105 and it's consistent. It shoots little .3MOA 5 shot groups easily and holds ½ MOA out past 800yds. I haven't been inspired to do much for development, Lol. Truly the EASY Button.
The GT has been a little more fiddly to get the ES and SD down, and im still working on it. However it also shoots small. I pretty regularly see sub .3 MOA groups for 5 in it too.
I just have a bunch of barrels for my 2 zermatt actions and several others for my long actions...so load development often gets stretched out over long times.
wilkup
Well-Known Member
Hmm… this actually pushes me further towards the Hammers than expected. I've never had an issue loading for them, like EVER. The harder I've pushed them in any chambering, the tighter my groups have always gotten. I'm waiting to chat with Steve about that 87gr Absolute next week. They've been at SHOT this week. Also very curious about the 90gr HHT. I'm not looking for a project rifle, that was the draw of another Hornady chambering
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jeremy.b
Well-Known Member
Coincidentally I'll be testing out a little Howa mini in 6 ARC the next couple weeks. Have a batch of 87 absolute hammers and will be starting with Lvr. There is some load data from someone using the exact same Howa setup with the 87gr AH that is probably a good starting point.
Wilderness Blacktail
Well-Known Member
im curious to see if Lever is very fast with this bullet for two reasons, one seems like with the 95gr and below the slightly quicker powders ie 8208 XBR, go faster than Lever, and two, arent AH's sposed to run with "quicker than normal powders per bullet weight"?
Let us know how it goes for sure! Im still lookin for the goldilocks load. Although im lookin heavy at the Copper Rose next for extended lethality over the LRX.
Sdvldog1371
Well-Known Member
I shot the bolt action today. I ran 26.7gr IMR 8208XBR in virgin Alpha munitions brass with CCI 450 primers and 108 eld-m's. Hornady lists 26.7 being under book max by a small margin.
Barrel is a 26" Proof prefit in competition contour. The average velocity once seating depth was found was 2602 fps. Outside Temperature started out at 28⁰f and got up to 36⁰f. I was VERY surprised at the initial load. Only the second cartridge I've stumbled backwards into a good load by sheer luck.
She wasn't winning any speed contests, but the ES over 29 rds of seating depth and proof shooting was 30.1 fps and an SD of 7.6. Not super impressive at first glance but the seating depth I landed on was in the lower .2s for 3 shots and high .2s for 5 with the velocity over 13 shots having an extreme of 14.5fps and an SD 2.8fps. Now, I did fire a separate 10nshot group and the whole group ate up the better part of a 1" dot, that may have been the load, or it may have been the mirage off of my suppressor and at the 100yd line. The firing line was frosty and had ice on the benches and such, but thr 100 yard line was nice and sun drenched. It was a nice reprieve walking back and forth to check the target.
If velocity and group size doesn't change much on once fired brass, I'm not inclined to go any further with it. Hopefully, when it gets hot out, it doesn't go over pressure or fall apart. I will run a ladder to find pressure at some point.
I'm interested to see everyone else's combinations as I watch this thread.
Barrel is a 26" Proof prefit in competition contour. The average velocity once seating depth was found was 2602 fps. Outside Temperature started out at 28⁰f and got up to 36⁰f. I was VERY surprised at the initial load. Only the second cartridge I've stumbled backwards into a good load by sheer luck.
She wasn't winning any speed contests, but the ES over 29 rds of seating depth and proof shooting was 30.1 fps and an SD of 7.6. Not super impressive at first glance but the seating depth I landed on was in the lower .2s for 3 shots and high .2s for 5 with the velocity over 13 shots having an extreme of 14.5fps and an SD 2.8fps. Now, I did fire a separate 10nshot group and the whole group ate up the better part of a 1" dot, that may have been the load, or it may have been the mirage off of my suppressor and at the 100yd line. The firing line was frosty and had ice on the benches and such, but thr 100 yard line was nice and sun drenched. It was a nice reprieve walking back and forth to check the target.
If velocity and group size doesn't change much on once fired brass, I'm not inclined to go any further with it. Hopefully, when it gets hot out, it doesn't go over pressure or fall apart. I will run a ladder to find pressure at some point.
I'm interested to see everyone else's combinations as I watch this thread.
