Thanks I will be going with .135 FB and .274 NK but like you I’m also thinking.150 ish could also be a winner
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6mm Dasher
- Thread starter BoilerUP
- Start date
I’d definitely look into going more than .135. It’ll work but you’ll be a lot better off with something closer to the .200. I know Stuteville cuts the Okie guys barrels around that. I had a barrel with .104 and for my 105s but when those got scarce I ordered a-tips. Had my barrel throated out to those specs and I’m happy with it.
Anybody have a feel on throat erosion with IMR-4166? That stuff seems to be relatively easy to come by, substantially easier than Varget or H4350 anyway, so I'm tempted give it a try.
Have you monitored throat erosion? I'm mostly interested in a 'low maintenance' load, one that isn't making me tune seating depths or grind out carbon rings every couple hundred rounds. I'm not looking for a ton of speed, I'll be quite happy in the low to mid 2800's for 109's/110's. From this thread H4350 sounds perfect but it's so hard to find in quantity. I'm hoping IMR4166/4451 yield a similar experience since they're so much easier to find.
No, i really don’t care about it. It shoots in the .2s at 100 and i put 3 on our 10” plate at 1000 within 3-4 inches
Running alpha brass, cci 450’s with 109 Bergers, 4166 at 32.5. You might need to work your own load up
You may want to try N140. Had good luck with that as well. I just dont want to run Dasher at 6 br speeds right now.
How often do you have to fiddle with your load to keep it shooting that well? Are you having to scrape out the fabled carbon rings I read so much about in dasher threads?
H4350 is a magic powder, but it's tough to come by. I have 7 lbs left of a keg that I'm probably going to try first but I'm also interested in a backup plan for when this keg is gone. I'm also going to try staball for kicks because it is so darn easy to load up and works so great in my 6.5 barrel, but I'm not betting on it since it's so dirty and running under "normal" pressure will likely make that worse.
Bruce. I just set the depth and leave it, i also run patches thru it every 100 rounds and never worry about carbon build up. Don’t overthink things, your going to drive yourself crazy
Touche. There is certainly some over thinking going on here. I have about 3 weeks before I torque on the dasher barrel which leaves a void for that.
I swear. This gun/caliber/load never ceases to amaze me. I havent shot this rifle or any groups with any rifle since April. Cold bore, cold shooter, 1 year old ammo. Shot these 3 rounds then went 2 for 2 on a 6" square plate at 511, then put the damm rifle away. I wasn't even sure if the scope was zeroed for this barrel when I shot it. I believe the zero is good.
I finally torqued on my dasher barrel so it seemed only fair to post some results. These are ~100 rounds in so chances are there will be a bit more evolution on the barrel before it becomes 'stable', though I've already seen a ~20 fps speedup with HDY 105's. I'm also running virgin alpha brass so that's going to change things a touch as well after I get onto the second firing.
- 112 Matchburners over H4350 are looking like the standout so far for my goals, 34.3-34.5gr yielding right about 2800 fps with a pretty good SD of 8 (for a very small sample of 6 but good enough to revisit). These loads are just slightly compressed, it's about perfect.
- Staball looked great with 112's at 2600ish fps but seems to have fallen apart after reaching the 2800's, both in terms of ES/SD and groups. I have enough other promising powders that I'm probably going to stop with the staball testing.
- IMR-4166 gives great speeds and has been pretty accurate with all kinds of 105-109's (Berg hyb 105 and 109, 105 HDY BTHP, sierra 107) but I'm having trouble getting good ES/SD. It also gives great speeds with 112 MB's but accuracy above the mid 2700's was meh and also had poor ES/SD.
This is great news, I just switched to the 112 match burners and I have a shit ton of 4350!!
Awesome. Just took 500 peterson 6 Dasher off a prize table and would love to just run proof prefits on origins
BR4s will work just fine.
I couldn't shoot a difference between a 108 ELD and a 107 SMK with the same exact load (32.4gr Varget, Lapua FF brass, -450) to the same 1.787" BTO on my Hornady comparator. That is to say, they shot very well.
I couldn't shoot a difference between a 108 ELD and a 107 SMK with the same exact load (32.4gr Varget, Lapua FF brass, -450) to the same 1.787" BTO on my Hornady comparator. That is to say, they shot very well.
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Thats awesome! Im about to screw on a new barrel and haven't been able to find any bergers. Elds are avail at midway so Im going to give them a try
there's places with a lot better pricing than midwayusa for 108eldm
Another fuzzier data point: I use a proof comp prefit in 6 dasher and have shot an initial ladder with the 108 ELDM's and IMR 4166 and the data lines up with most other 105's in terms what consistent burn (reminder, this is preliminary) and there are a couple promising groups in there. They did have to be seated a bit deeper into case than say berger 105's or 107 SMK's, but tbh I'm not an expert on whether that is material or not and the groups seemed not to care. Now that my brass has all been once fired I'm going to revisit these and if the initial results hold I'm sure I'll buy more.
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Thanks for the info. This will be my first dasher. I will be loading with varget , 108 eldm and atlas brass
I use 108ELDM a fair bit @Hedgepeth0 in my 6mm rifles.
The 108s can be found here(Down Under) for AUD$50/100 where as 105Hybrids run about AUD$74/100
As @SuperBruce said, the 108s will hit the lands earlier than 107SMK or 105s so be wary about COAL.
On a side note the 108ELDM measure a little bigger to me in diameter. You can feel the higher neck tension on seating and this plus they're cheaper is why I use them as my 6BRX and 6Dasher fireforming(jammed) load.
The 108ELDM shoot well but (just IMO) they do not compare with the 110&107SMk and 105Hybrid as a match pill.
They tend to run a bit slower across every barrel I've tried them in and they do drift a little more in the wind.
The 108s can be found here(Down Under) for AUD$50/100 where as 105Hybrids run about AUD$74/100
As @SuperBruce said, the 108s will hit the lands earlier than 107SMK or 105s so be wary about COAL.
On a side note the 108ELDM measure a little bigger to me in diameter. You can feel the higher neck tension on seating and this plus they're cheaper is why I use them as my 6BRX and 6Dasher fireforming(jammed) load.
The 108ELDM shoot well but (just IMO) they do not compare with the 110&107SMk and 105Hybrid as a match pill.
They tend to run a bit slower across every barrel I've tried them in and they do drift a little more in the wind.
Brian knows what he's doing and that reamer is basically made for Alpha brass. You won't have a problem.
I have a TS spun dasher barrel I run on my AX with alpha brass.
It hammers, best dasher reamer for alpha.
It hammers, best dasher reamer for alpha.
The way I see it, the bushing size has less to do with the way the chamber is cut and more to do with the neck thickness of the brass and diameter of the bullet. I've been using a .267 bushing on Alpha brass with a berger 105 hybrid. I know some guys are using a .266. I'm using a proof shouldered prefit, so I'm not sure if that's useful info for you or not.
Which, unless you design and buy your own reamer, leaves you taking what whoever cuts your chamber and extra $$$ cut a custom throat to meet your "wants"
I load 34.0 gr. in alpha and peterson brass. Great, mild, accurate load, mv is just over 2900 fps.
not running mine real hot, 32gr H4350, Berger 105's. 2707fps. SD's and ED's nothing super 34/11. 10 shot group which is what i shoot. 75 seconds total string first to last shot. Was kinda on the cold side when i shot these, around 38degrees with north wind off to my right about 10MPH. left shot was the cold bore, then the next 9 stayed together. Had my barrel chambered for Norma brass by LRI. I have some Alpha brass OCD, i'm thinking of loading up and shooting out of this setup to see how it does. Second picture was from the evening before, factory new brass 10 rnds, then I took the brass, wet tumbled it, FL sized, bumped the shoulder .002 , necked it back to .242 and shot it again. Wanted to see how they 2 groups compared with once fired brass
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my apologize's , missed that. These are the first i loaded with H4350. I'll work my way up over the next few outings.
switched over to 32gr of varget as i just couldn't get a good SD with the H4350.
