6BRA….N135

[Longrange57]

6BR 12tw and 80 Dominator......N135 shoots great!

 

[Jvance513]

IF it is ignition, swapping out the entire FP assembly may give you less pin fall, and result in even more erratic shots.
Probably safer to put in a new FP spring, and make sure it is a 25 pound spring.
Before doing any of the above, make sure the FP has not rotated a little loose from the bottom cocking piece set screw.
IMO, N135 won't give you the joy you are looking for with that bullet weight range and twist.

Thanks Jack. I have ordered a new pin and spring from bullet central and should be waiting on me when I get home. None the less I picked up 16lbs of n135 for just under 250 dollars. It’ll be a great 223 surplus powder if it comes down to that. Would like to grab some 140 to try eventually though. I’m sure between some more testing with 4895 and varget, I’ll find something that will compete haha.

 

[Frankm]

$15 a pound for n135 … must of had a pistol with you when you went to pick it up …

 

[Jvance513]

$15 a pound for n135 … must of had a pistol with you when you went to pick it up …

One on me and one for backup

 

[bugman]

Be careful if the action was timed because a new pin can throw that off. Start with the spring.
Call me if you have trouble getting both of the set screws out of the cocking piece.

 

[Jvance513]

Be careful if the action was timed because a new pin can throw that off. Start with the spring.
Call me if you have trouble getting both of the set screws out of the cocking piece.

Will do Jack. Thanks. Assumingly it was. It was built by Alex. Before I go swapping anything I think I’ll do a bit more testing with the powder.

 

[Jeff Porter]

Just started playing with this. N135 was dead nuts on same velocity as the same weight of H4895 with a Berger 105 hybrid. I need to run a jump test to confirm accuracy but I would not kick it out of bed for eating crackers using the 0.010” off I am tuned with the H4895.

 

[Jvance513]

Just started playing with this. N135 was dead nuts on same velocity as the same weight of H4895 with a Berger 105 hybrid. I need to run a jump test to confirm accuracy but I would not kick it out of bed for eating crackers using the 0.010” off I am tuned with the H4895.

View attachment 1517590View attachment 1517591

What brass are you running? These look like some good numbers!

 

[Jeff Porter]

Lapua 3x fired, annealed with Amp annealer every time. Whidden die set

 

[Jvance513]

Lapua 3x fired, annealed with Amp annealer every time. Whidden die set

We are on the same page then!

 

[USMCDOC]

All else equal, I tend to lean toward a faster powder when I can. Only reason is lower muzzle pressure. Probably all between my ears but you can literally feel the difference in recoil on some guns. Same bullet, same speed and all..the faster powder will generate a bit less recoil. If I can feel it, I have to think the bullet does too. Again, probably more between my ears than anything to get hung up about.

Faster powders have a snappier recoil, whereas slower powders push more.

 

[jvshiver]

Justin several guys down here I know are running N135, I never tried it in my BRA because Varget was working well.
31.8 varget
105 hottenstein barnstormers
Cci450
Lapua brass

 

[Jvance513]

Justin several guys down here I know are running N135, I never tried it in my BRA because Varget was working well.
31.8 varget
105 hottenstein barnstormers
Cci450
Lapua brass

Tons of testing In my future lol

 

[gunsandgunsmithing]

Faster powders have a snappier recoil, whereas slower powders push more.

Powder volume is factored into recoil calculations as well and the difference in muzzle pressure is real and can be seen on a pressure trace. All else equal, a heavier powder charge creates more recoil and is a part of the ejecta.. and a faster powder does the same work in less time, leaving less powder volume unconsumed and yields a lower muzzle pressure. Ya might claim that I'm imagining the felt difference and I couldn't argue with that but there is a physical difference that is not imaginary. Perhaps that's why it feels snappier, as the push is for less duration. Not worth arguing over either way.

 

[jkohler]

Just got back from shooting two new 6BRA’s with 12tw barrels. Loaded 80gr barts with 4895 and 135. loaded 30.5gr‘s of both just for fire forming. Both shot great but 135 was about 125fps faster at 3166.

 

[Longrange57]

24 inch barrel, 31.4 gr N135 gives me 3190 fps with 7.5 primer. I have about every primer made, but this combo does the trick with 80 Dom and I see close to the same results with Berger 80 fb varmint bullet.
100/200/300 this will get the job done!

 

[Longrange57]

As a side note, I tried shooting N135 in my Dasher. Did not work, too hot for node. It likes Var and Bart's Gungnir with 205m at 2980. You never know until you try!

 

[wildcatter]

The powder I use in 68gr loads for varmint, in a standard BR, pushing 3450+ with .3 moa.in a 22.5" barrel. My first choice was H322, but I'm hoarding that for 222. 135 has never been my choice over 85 grains, but for lighter it has served me well. Also ignited with Rem 7.5"s.

 

[Jvance513]

Update on today’s project. Conditions were mediocre at best. But happy where we ended up. Lapua brass, 205m primers, N135, 108 bergers.

Ran a seating depth test at 300 yards this morning from +.003 to -.021 every .003 skipping touch. Temps today started off at about 34° and finished off at about 45°. Winds were switchy at about 10-12 with medium mirage.
Took the .018 jump and went to 600 to play with powder. Tested 30.3-30.5 biggest it shot was a 2.08 at 30.5 then it was off to 1000. Tested the same charge weights, and biggest it shot was a 5.84 and that also was at 30.5.
30.3 and 30.4 shared similar results at 600, and 1000, but I favored the 30.3 especially since I’m not completely sure of the temp stability of this powder.
For reference:
30.2-2840
30.3-2858
30.4-2862
30.5-2868

 

[Jvance513]

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