VV N150 Loads in 6 Dasher or Straight 6BR?

[HTSmith]

Anyone use N150 with 105 Gr class of bullets successfully? I'd appreciate you sharing your loads. TIA

 

[NZ_Fclass]

6mm Dasher and VV N150

I am near starting the build of a 6mm Dasher for F-Open.. The barrel will be a .237Bore, 1-8 Twist, to finish at 30".. The reamer is a .271 neck, with a .155 FreeBore.. I will be shooting (or at least I will try) Berger 105 Hybrids. It has been my experience with "regular" 6mmBRs, using 105-108...

forum.accurateshooter.com

 

[Laurie]

N150 is widely used in 6BR and this bullet weight category in the UK with excellent results. In the 'straight BR', max is usually somewhere around 31gn with 105-108gn. In practice, you can't get much more into the case, and in any event need a funnel with a decent length drop tube like the Forster and a slow, angled pour.

Forget burn-rate charts. N150 (and N160) are much 'quicker' than are shown in most charts. We use N150 as the 308 standard powder with heavier match bullets over here.

 

[Liven The Dream]

Yep used it in My BR with 107's back in the 90's worked well for 600 yard prone Rifle.
Have at it.

 

[Mulligan]

I recently started working with 150 again in a dasher after scratching my head and walking away from it.

This single shot ladder test was shot in Western Colorado.
67.5*F
37%RH
837.3hPa
4-8 gusts to 10 @3 o’clock
N-150
205m
Lapua brass
103VT

CW

Edit
600 yards, 28” Kreiger 1:8, BAT DS

 

[NA Woody]

In a 6br and 6 dasher I have found that N150 and Varget are basically interchangeable. Same load gives me the same speed. This is 105- 108 grain projectiles.)
Your mileage may vary....

 

[HTSmith]

View attachment 1457539
I recently started working with 150 again in a dasher after scratching my head and walking away from it.

This single shot ladder test was shot in Western Colorado.
67.5*F
37%RH
837.3hPa
4-8 gusts to 10 @3 o’clock
N-150
205m
Lapua brass
103VT

CW

Nothing like real data. Thanks much. How far was this target?

 

[Mulligan]

Nothing like real data. Thanks much. How far was this target?

My apologies, I should have included that

600 yards
CW

 

[SKWERLZ]

View attachment 1457539
I recently started working with 150 again in a dasher after scratching my head and walking away from it.

This single shot ladder test was shot in Western Colorado.
67.5*F
37%RH
837.3hPa
4-8 gusts to 10 @3 o’clock
N-150
205m
Lapua brass
103VT

CW

Edit
600 yards, Kreiger 1:8, BAT DS

Barrel length?

 

[avidflyer]

My apologies, I should have included that

600 yards
CW

Whats the date on the lot? just curious I have 3-8 pounders left dated 2015 that I get really good results from in 308.

 

[Mulligan]

Whats the date on the lot? just curious I have 3-8 pounders left dated 2015 that I get really good results from in 308.

 

[HTSmith]

My apologies, I should have included that

600 yards
CW

Looks promising. Do you remember what made you scratch your head the first time you tried it? Thanks so much for the help.

 

[Mulligan]

Looks promising. Do you remember what made you scratch your head the first time you tried it? Thanks so much for the help.

Yep

As soon as I finish breakfast, I’ll post a picture

CW

 

[Bill Norris]

View attachment 1457544

JAN 19TH 2022

 

[Mulligan]

Vertical steps and velocity steps are too big in this 3-shot ladder.
I started with a powder charge that was higher that what I would have liked.

Note
Pressure was present during this entire ladder. These are not likely safe loads in all firearms.
YMMV

Start lower
CW

 

[Mulligan]

Spastic is a good way of describing this target. The overlap at the upper end is good, however I didn’t really see as good of overlap at the lower end or middle.

Smaller increases may flesh those out?
CW

 

[17VLD]

While searching for an alternative to Varget I thought the cooler burning VV 100 series of powder made sense and wanted to try some N140,no luck finding that.
So I thought N150 might work and give me good case fill to boot.I was concerned that it might be too slow according to all the burn rate charts I’ve seen,wrong! as Laurie has stated above the new N150 is way faster than the older lots.I assembled some 6BR loads for the new 32” .236” Kreiger 4 groove that Ronnie Long chambered for me starting with 30.0 working up to 31.2, well folks I was in BRA territory with speeds of 2950 to 3002fps.I had slightly extruded 450 primers so back to the drawing board and to get to the point of the op’s question the load that I settled on and gave me my first screamer at 600 yards is Lapua brass turned to .012”(.270”) 28.0 N150 Berger 105 cci450 2880 FPS s.d. 3.7, so much for 100 percent fill ratio.Picture is 5 shots in 1.019”
Matt

 

[jackieschmidt]

N150 is widely used in 6BR and this bullet weight category in the UK with excellent results. In the 'straight BR', max is usually somewhere around 31gn with 105-108gn. In practice, you can't get much more into the case, and in any event need a funnel with a decent length drop tube like the Forster and a slow, angled pour.

Forget burn-rate charts. N150 (and N160) are much 'quicker' than are shown in most charts. We use N150 as the 308 standard powder with heavier match bullets over here.

^^^^^^^

 

[HTSmith]

OK I threw together 3 rounds to try during my practice session. 6 BR, 28" Bartlein, 78F, 88%RH, 29.94 Hg, Lapua multi fired brass, CCI 450, 103 Gr Bullets, Seated into the lands .015 past touch
N150 Grains speed (lab radar)
30.6 2889fps
30.8 2906fps
31.0 2933fps

Primers were a little pouty but bolt lifted easily. Faster than I expected for sure. Probably should have started at 30,0. I'll be doing more testing. Thanks for all the feedback.

 

[freebird22/250]

Do any of you 6mmbr shooters use N-150 for your light bullets loads my 6br has a 14 twist Krieger bbl. as i have few pounds of it in my powder stash, thanks for any info.