109 bergers in 6 dasher

[Sokam101]

Is anyone running these with varget? What speeds run good and with what charge weight?

I just broke in my 26 inch proof barrel and am using OCD alpha, varget, and fed 205m's. 31.8 grains was getting 2815 fps in new brass. I'm going to do a ladder test this weekend and am planning on just going up to what people run the 105s at powder wise. I know the 109s will be slower.

 

[Krob95]

Seems kinda slow. I’m running 31.4gr varget with a 109 hybrid, lapua brass in a 6BRA and getting 2825. Bartlein barrel.

 

[spife7980]

In a couple barrels now with lapua brass Im finding I get pressure signs ~32 grains with varget and the 105-115 bullets. Alpha ocd may withstand more it doesnt mean the pressure still isnt there lurking. Chasing 2900+ is a stout load, Id be pleased with 28xx something, where ever it shoots pretty. I land around the 31.3-31.5 is seems like krob, one barrel had that at 2860, this current is putting me around 2760 with a 115. But its happy there.

Id load .02 off the lands and 31.1-32.0 in .1 increments, 3 shot groups and see whats what on paper, at distance if you can, and not worry about es/sd, its a dasher, they are all gonna shoot well. Then a little seating depth test and youre done and its gonna be one ragged hole.

 

[Sokam101]

Seems kinda slow. I’m running 31.4gr varget with a 109 hybrid, lapua brass in a 6BRA and getting 2825. Bartlein barrel.

I agree it's slow. Maybe because it's new brass? Could it be because I only have 17 rounds through my barrel?

 

[Sokam101]

In a couple barrels now with lapua brass Im finding I get pressure signs ~32 grains with varget and the 105-115 bullets. Alpha ocd may withstand more it doesnt mean the pressure still isnt there lurking. Chasing 2900+ is a stout load, Id be pleased with 28xx something, where ever it shoots pretty. I land around the 31.3-31.5 is seems like krob, one barrel had that at 2860, this current is putting me around 2760 with a 115. But its happy there.

Id load .02 off the lands and 31.1-32.0 in .1 increments, 3 shot groups and see whats what on paper, at distance if you can, and not worry about es/sd, its a dasher, they are all gonna shoot well. Then a little seating depth test and youre done and its gonna be one ragged hole.

I did jumps at 60, 80, and 100tho. And 60 shot the best group. I don't plan on pushing it crazy. I'd be happy with upper 2800s.

 

[Mordamer]

I load 30.5 grains of Varget in Lapua brass with a 109 LRHT. I get 2,810 with a 28 inch barrel. Precision is outstanding. I loaded up to 31.0 Varget and it shot pretty much the same with velocity of 2,850. Running the numbers between the 2 loads there is no discernable difference in wind drift.

 

[ChristianSilver]

I’m getting 2880 w/ 31.7 Gr Varget and 2858 w/ 31.5 Gr. 26” w/ 110 ATips, Lapua brass and CCI 450’s... jumping .045

26” Kreiger 1-7.5

Same load with 105’s and was seeing 2915 with 31.7 Gr...

 

[ChristianSilver]

Did my ladder last week, settled on 31.7 Gr here’s 200 yard groups with the 110 Atips..
Barrel now with just over 100 rds on it..
MV verified on labradar...

 

[Sokam101]

UR did a ladder test 31.8 to 32.7 and got speeds just a little faster than me. Maybe his barrel was broken in already. Thoughts? https://ultimatereloader.com/2020/06/02/5-shots-one-hole-6-dasher-load-development-initial-results/

 

[ChristianSilver]

I started seeing pressure signs at 32.1, small but there. I feel the upper to mid 2800’s is sufficient...

 

[phlegethon]

I am getting 2850 fps with 32 gr Varget, Alpha brass, 109s. I don't think they are jump sensitive, to the point that it's a waste of time doing testing.

 

[BoilerUP]

I agree it's slow. Maybe because it's new brass? Could it be because I only have 17 rounds through my barrel?

Yes. You should pick up velocity over your first 150-200 rounds.

 

[ChristianSilver]

I have 1000 109’s that I haven’t opened yet, will try them next outing. the 110’s liked the jump of . 045

 

[Sokam101]

I started seeing pressure signs at 32.1, small but there. I feel the upper to mid 2800’s is sufficient...

What pressure signs were you seeing?

 

[Sokam101]

I am getting 2850 fps with 32 gr Varget, Alpha brass, 109s. I don't think they are jump sensitive, to the point that it's a waste of time doing testing.

What barrel length?

 

[Raufoss]

31,8 gr of N150 get's me 2810 fps and I'm happy with that.

 

[phlegethon]

What barrel length?

26 inches.

 

[ChristianSilver]

What pressure signs were you seeing?

Moderate bolt lift, heavier than I like. Some flattening of primer. Nothing extreme but there, 31.9 grains was fine, slightly heavier b- lift 2908 MV.
32.1 was pushing it I felt.
Thinking about barrel life also...

 

[LV Precision]

Berger 109s with Alpha OCD, 31.3 Varget, CCI 400 at 2.365” COAL get me sub 0.3MOA in a Proof 26” steel barrel.

 

[Sokam101]

Berger 109s with Alpha OCD, 31.3 Varget, CCI 400 at 2.365” COAL get me sub 0.3MOA in a Proof 26” steel barrel.

View attachment 7595549
View attachment 7595550

What fps at 31.3 grains?

 

[LV Precision]

What fps at 31.3 grains?

About 2828 fps, super consistent across ~400+ rounds after barrel break in. Regular SD of ~5.0 with very little trouble.

 

[Sokam101]

About 2828 fps, super consistent across ~400+ rounds after barrel break in. Regular SD of ~5.0 with very little trouble.

What are gavin and I doing so different that 31.8 grains are getting so much less fps? My 31.8 is getting 2813 fps. His was 2840.

https://ultimatereloader.com/2020/06/02/5-shots-one-hole-6-dasher-load-development-initial-results/

 

[LV Precision]

What are gavin and I doing so different that 31.8 grains are getting so much less fps? My 31.8 is getting 2813 fps. His was 2840.

https://ultimatereloader.com/2020/06/02/5-shots-one-hole-6-dasher-load-development-initial-results/

Not sure, I use a really similar loading process. I load on a Co-ax with Redding Type-S dies, and use about 0.0025" neck tension using the Sinclair neck turning mandrel. I use an Autotrickler v3 to throw powder.

I'm also generally at 4500 DA in Las Vegas with low humidity. The answer is probably somewhere in there.

 

[Sokam101]

Not sure, I use a really similar loading process. I load on a Co-ax with Redding Type-S dies, and use about 0.0025" neck tension using the Sinclair neck turning mandrel. I use an Autotrickler v3 to throw powder.

I'm also generally at 4500 DA in Las Vegas with low humidity. The answer is probably somewhere in there.

I'm using a v3 also. My brass is new. Did your fps jump from new brass to once fired?

 

[Sokam101]

Anyone seeing any nodes? Only had slight ejector swipe at the top two charges.

 

[phlegethon]

Anyone seeing any nodes? Only had slight ejector swipe at the top two charges.

Velocity nodes are a myth.

 

[Mordamer]

Anyone seeing any nodes? Only had slight ejector swipe at the top two charges.

Velocity nodes don't exist. Do the same test over again and you'll have different flat spots.

 

[Huxtable_hurt_me28]

In a couple barrels now with lapua brass Im finding I get pressure signs ~32 grains with varget and the 105-115 bullets. Alpha ocd may withstand more it doesnt mean the pressure still isnt there lurking. Chasing 2900+ is a stout load, Id be pleased with 28xx something, where ever it shoots pretty. I land around the 31.3-31.5 is seems like krob, one barrel had that at 2860, this current is putting me around 2760 with a 115. But its happy there.

Id load .02 off the lands and 31.1-32.0 in .1 increments, 3 shot groups and see whats what on paper, at distance if you can, and not worry about es/sd, its a dasher, they are all gonna shoot well. Then a little seating depth test and youre done and its gonna be one ragged hole.

What chambering are you running? Free bore? Neck?

 

[spife7980]

What chambering are you running? Free bore? Neck?

Depends on the barrel but somewhere between .270-.273 neck and .104-.120 freebore is a pretty standard dasher reamer.

 

[1967spud]

im now starting to play with the new winchester match powder and 109 bergers and after basic load dev it looks really good