I am currently about to start load data for my Dasher and am looking at what works for you guys out there (powder, charge wt, bullet jump, ect). I want to keep this thread strictly about data regarding the Berger 109gr Hybrid in the 6 Dasher, so please leave out your favorite 105gr VLD/Hybrid comments. I am using Alpha Brass and rem bench rest 7.5 sr primers. Thanks
6 Dasher with 109gr Berger Hybrids
- Thread starter SD3Gunner
- Start date
I gotta imagine the info you're asking for can be found here?
www.snipershide.com
6mm Dasher
20" 1:8 Hawk Hill 107gr SMK 32.4gr Varget Lapua FF'd Brass CCI-450 2801fps
www.snipershide.com
maybe so but if you look at that page its 95% 105gr data. I want a page dedicated to 109gr hybrid data. ThanksI gotta imagine the info you're asking for can be found here?
6mm Dasher
20" 1:8 Hawk Hill 107gr SMK 32.4gr Varget Lapua FF'd Brass CCI-450 2801fps
What if I told you that they all basically end up in the same place? Start at 30gr varget and work up to 32 looking for pressure as you go. Your particular lot of varget will make more difference in speeds and pressures.
what kind of jump are people finding works best with the 109s for PRS style shooting not benchrest?
109’s like to jump but how much all depends on your freebore
@SD3Gunner
@LA260
29.7gr N150
Alpha brass
CCI 450
30 thou off
.154 freebore (alpha reamer)
This is my prs load that runs at 2790 fps, with an sd of 8 fps and an es of 32 fps. I've heard that N140, N150, and varget will be similar so like others have said, that 30gr range will be a good start.
I had similar results with 30.3gr of N150 that ran around 2825 but did have slight ejector marks. It was about 100 degrees out so I went with the lower load for safety during the summer months.
I tested from 10 thou off to 70 thou off in 3 thou increments. I couldn't shoot the difference between 30 to 60 thou so I set it at 30 off and will let it roll for the life of the barrel.
Hope this helps with your builds.
@LA260
29.7gr N150
Alpha brass
CCI 450
30 thou off
.154 freebore (alpha reamer)
This is my prs load that runs at 2790 fps, with an sd of 8 fps and an es of 32 fps. I've heard that N140, N150, and varget will be similar so like others have said, that 30gr range will be a good start.
I had similar results with 30.3gr of N150 that ran around 2825 but did have slight ejector marks. It was about 100 degrees out so I went with the lower load for safety during the summer months.
I tested from 10 thou off to 70 thou off in 3 thou increments. I couldn't shoot the difference between 30 to 60 thou so I set it at 30 off and will let it roll for the life of the barrel.
Hope this helps with your builds.
31.0gr N140
Alpha Brass
CCI 400
2800 FPS in a 26" barrel.
I have around .20" of jump in a .104" fb. The hybrids are so jump tolerant I don't the exact dimension matters. As long as it is not jammed, send it.
I just bought a .154" reamer for my next barrel. I'm going to try a 24" barrel so I'll probably up the charge to 31.5gr to lessen the velocity penalty.
Alpha Brass
CCI 400
2800 FPS in a 26" barrel.
I have around .20" of jump in a .104" fb. The hybrids are so jump tolerant I don't the exact dimension matters. As long as it is not jammed, send it.
I just bought a .154" reamer for my next barrel. I'm going to try a 24" barrel so I'll probably up the charge to 31.5gr to lessen the velocity penalty.
31.7 gr Varget
Alpha brass
Cci450
Jumped .020 with a 120 fb on new barrel but haven’t checked it since and still produces tiny groups.
2855 fps in a 26 inch proof
Also ran a lower charge while speeding up the barrel and forming brass with great results.
31 gr Varget
Alpha brass
Cci450
Jumped .045
2780 fps
Alpha brass
Cci450
Jumped .020 with a 120 fb on new barrel but haven’t checked it since and still produces tiny groups.
2855 fps in a 26 inch proof
Also ran a lower charge while speeding up the barrel and forming brass with great results.
31 gr Varget
Alpha brass
Cci450
Jumped .045
2780 fps
Haven't tried N150. N140 and Varget preform almost identical for me. Like I use the same charge weight and get roughly the same speed.
28" 1/7.5 Ace Brand New
Alpha Virgin Brass tumbled in corn cub/Chamfer/Deburr
Berger 109/CCI450
(0.060) off the lands 1.787 Ogive/2.392 ish COAL
30.0 Varget 2,710FPS Ave 12 rds
30.5 Varget 2,743FPS Ave 12 rds
31.0 Varget 2,793FPS Ave 12rds
These were round 21-57 on the barrel. 31.0 gr should go up to 2,825 by 150-200 rds. All grouped <0.5 for 6 shot groups. I'll probably try 31.5 next time but as of now i think 31.0 will work.
Alpha Virgin Brass tumbled in corn cub/Chamfer/Deburr
Berger 109/CCI450
(0.060) off the lands 1.787 Ogive/2.392 ish COAL
30.0 Varget 2,710FPS Ave 12 rds
30.5 Varget 2,743FPS Ave 12 rds
31.0 Varget 2,793FPS Ave 12rds
These were round 21-57 on the barrel. 31.0 gr should go up to 2,825 by 150-200 rds. All grouped <0.5 for 6 shot groups. I'll probably try 31.5 next time but as of now i think 31.0 will work.
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