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6mm Dasher Loads

Here is my current load

Lapua 6BR Brass
33.8 grains RL15
CCI 450 primers
Berger 87gr VLD's
.010 off the lands
3345 velocity
Krieger Custom Octagon barrel 1:10 twist w/ KDF Brake
Leupold VX3 8.5-25x50 Scope (varmint reticle)

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Skeeter
 
6mm Dasher 1:8 twist 28 inch Kreiger barrel
This load produced sub 1/2 MOA groups.
All Lapua brass neck turned to .001 or less concentricity.
32.6 gr Reloader 15, CCI 41 primer, Berger 105 gr Hybrid bullet pressed to a length .010 of the rifling lands.
Chrono'ed at 3180 fps, most 3 shot groups avg less than 8 fps spread.
I use Wilson dies.
 
500Stroker said:
6mm Dasher 1:8 twist 28 inch Kreiger barrel
This load produced sub 1/2 MOA groups.
All Lapua brass neck turned to .001 or less concentricity.
32.6 gr Reloader 15, CCI 41 primer, Berger 105 gr Hybrid bullet pressed to a length .010 of the rifling lands.
Chrono'ed at 3180 fps, most 3 shot groups avg less than 8 fps spread.
I use Wilson dies.
Click to expand...

Your MV is way faster than I am getting with 32.5 gr. of Rel. 15 and Berger 105 VLD's. I am getting a 2922 ave. Have you printed out a ballistics chart and checked different yardages to see if it matches your actual on target results well? I am using a Magneto Speed Chrony.
 
timeout said:
500Stroker said:
6mm Dasher 1:8 twist 28 inch Kreiger barrel
This load produced sub 1/2 MOA groups.
All Lapua brass neck turned to .001 or less concentricity.
32.6 gr Reloader 15, CCI 41 primer, Berger 105 gr Hybrid bullet pressed to a length .010 of the rifling lands.
Chrono'ed at 3180 fps, most 3 shot groups avg less than 8 fps spread.
I use Wilson dies.
Click to expand...

Your MV is way faster than I am getting with 32.5 gr. of Rel. 15 and Berger 105 VLD's. I am getting a 2922 ave. Have you printed out a ballistics chart and checked different yardages to see if it matches your actual on target results well? I am using a Magneto Speed Chrony.
Click to expand...
I have not checked the ballistic's at the range, waiting on weather.
Not sure about the speed, mine was checked with an almost new Chrno.
Regardless of the speed the load is dead on for accuracy.
I will let you know what I find.
 
timeout said:
500Stroker said:
6mm Dasher 1:8 twist 28 inch Kreiger barrel
This load produced sub 1/2 MOA groups.
All Lapua brass neck turned to .001 or less concentricity.
32.6 gr Reloader 15, CCI 41 primer, Berger 105 gr Hybrid bullet pressed to a length .010 of the rifling lands.
Chrono'ed at 3180 fps, most 3 shot groups avg less than 8 fps spread.
I use Wilson dies.
Click to expand...

Your MV is way faster than I am getting with 32.5 gr. of Rel. 15 and Berger 105 VLD's. I am getting a 2922 ave. Have you printed out a ballistics chart and checked different yardages to see if it matches your actual on target results well? I am using a Magneto Speed Chrony.
Click to expand...
You called it.
My JBM ballistics calculations were off a full 4 MOA in comparison to actual MOA placement at the range.
So much for Chrno, I will have to start over with a different chrongraph and see what happens.
Have compared your Magneto Speed to any other?
A you shooting Berger 105gr Hybrids?
 
I just did a ladder test on a new Dasher. Don't have the results in front of me, but 33.8 of Reloader 15 with Berger 105 VLD's is right at 3000 fps MV on my magneto speed chrono. I have not compared it to another chrony.
 
30" krieger HV 8 twist .269neck forgot the freebore
105 hybrid trimmed/pointed jump.002
rel 17 36.6gr
cci 450 primer
anneal before every loading, lapua brass necks turned
redding s die, .264 bushing
chrony 10 feet last 5 tested 3140,3141,3144,3139,3139. at 300 yards last group tested was .697
 
Shot my first look loads with some new powders for my new Dasher today. I tried IMR4451, Viht N550, and IMR8208XBR.

Gun:
Savage Target Action
McGowen MTU 28 inch
Bostrom Laminate Stock
Neck: .269
Bullet: AMax 105 gr
Primer: F205M
OAL: Base to Ogive 1.793 (0.005 off the lands)
Brass: Lapua (1st firing post COW fireforming)
Temp: ~65F
Pressure: ~23 inHg (7000ft)
Distance: 100yds

I should clarify that the signs of pressure observed were very slight ejector marks on the case head. I didn't find the ejector marks on the 8208 31.5 and 32 loads until I got home under close inspection with a bright light. None of the loads had difficult bolt lifts or extractions. The gun craters primers (even with a PTG bolt head, much better but still present) so it is difficult to evaluate primer signs.

IMR4451:

Started compressing the powder at 35 grains. Not fully compressed but crunching powder upon seating the bullet. Not great velocity but didn't see any signs of pressure. Just too slow for this case volume.

N550:

Great Velocity! Started showing pressure signs at 35.5 gr. Moderate ejector marks at 36 gr. Don't really see a plateau in the elevation.

IMR8208XBR:

This powder grouped the best overall out of the three tested. There may be a good window around 31 gr. Started showing signs of pressure at 31.5 gr.

I want to continue with both the N550 and the 8208 but first want to check out RL15 as it seems to be the goto powder for the Dasher.

Cheers,
Toby

Edited to add pressure sign info.
 
Toby

Recommend you stop testing loads at or above the powder volume you see pressure signs. Nothing good will come from continued testing with increased powder weights.

For powder, give Varget (if you can find it), H4895 and RL15 a try.

Good Shooting.

Rich
 
Gabe22BR said:
Looking for some IMR8208XBR Dasher loads, as I have plenty of it. My RL15 is getting low...
Click to expand...
I have a friend who uses it. It is VERY accurate in his rifle with 105 gr Berger B/T's.. BUT He is in the 31.0gr range (somewhere between 31.2 and 31.8 I believe) and it has modest velocities. It is a shade on the fast side for 105 class bullets. It can and will produce EXCELLENT accuracy but the speeds are down where a regular 6mmBR resides..
 
Last edited:
savagedasher said:
I shoot with H 4350 36.6 GR it is a compressed load . You must use a long drop tube with a slow pour down the center.
The 105 hybrid are seated 2.404 Col
3070 to 3085 depending on the barrel length and twist.
We have 9 different guns shooting the same powder drop. But all the guns are using a
RAS tuner brake. Larry
Click to expand...


Larry what length barrels are you using?
 
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