N-133 in heavy 6mm ARC in Bolt Rifle

[Jo_Smith]

I have been using LeveleRevolution in my bolt 6 ARC with good results. I am running a 109 Berger and getting good groups. The problem I have is the SD and ES are all over the place. I was seeing that the N-133 has been in the 6PPC and kicking ass for a long time and was needing some input from ya'll about the possibility of trying it in a heavy bullet with the bigger case. The reloading manuals have it being used in the lighter bullets but not in the 95 grain and heavier.

This is a bolt gun not and AR.

 

[Frankm]

N-140 or N-540 along with H4895 or Varget burn rates would probably serve you better with heavy bullets.

N-133 might work accuracy wise but probably significantly less velocity. Now if you want to shoot 55-70 gr bullets it could be great!!

 

[Longrange57]

I have been using LeveleRevolution in my bolt 6 ARC with good results. I am running a 109 Berger and getting good groups. The problem I have is the SD and ES are all over the place. I was seeing that the N-133 has been in the 6PPC and kicking ass for a long time and was needing some input from ya'll about the possibility of trying it in a heavy bullet with the bigger case. The reloading manuals have it being used in the lighter bullets but not in the 95 grain and heavier.

This is a bolt gun not and AR.

I would try N135.....probably work much better with heavy bullet

 

[Shifty6br]

You would probably hit pressure before you see any decent velocities with N133 and the heavies....most likely will not operate the gas system either.

I was out last night working up an ocw with n133 and 65gr berger....found an awesome node towards the top end, the spent cases ejected but there just was not quite enough pressure or too much buffer/spring weight to get back and strip the next round for the rifle length gas ...essentially turned into a bolt action.

That said....I did have a custom self made heavy rifle buffer and a heavier rifle buffer spring I was using for the heavies so that may be the underlying issue..Hopefully a standard buffer weight and standard spring will get it running..I also plan on swapping the fa bcg to a slightly lighter sa bcg.

N133 is just to fast for the heavies...75gr is probably still too heavy...

5@100 28.9gr n133 65gr berger 3356 avg fps


eta- just noticed this was for bolt action...disregard pertaining to gas

 

[gunsandgunsmithing]

Like many things shooting related, there are very few things set in stone. N133 is too fast to be "ideal" in an ARC with the heavy bullets but that's not the same thing as saying that it can't work.

I'd try n135 and n140, or several other powders in the varget/h4895 burn rate range. I just think that range is closer to ideal for what you're shooting but...testing is how we KNOW stuff. If n133 is giving you good results and you're happy, then it's working for you, but yeah, I think there are other options that should work better in terms of fill rate and speed...which may or may not translate to better accuracy, too.

 

[Rob01]

I have tried N135 and N140 in my 6ARC bolt gun with 110 ATips and they were both very slow. I couldn’t have shoved anymore in there either.

 

[gunsandgunsmithing]

I have tried N135 and N140 in my 6ARC bolt gun with 110 ATips and they were both very slow. I couldn’t have shoved anymore in there either.

Interesting. I typed a more detailed reply but for some reason, it won't post. Get a Oops msg. Oh well. Like I said, not much written in stone.

 

[SD guy]

I have been using LeveleRevolution in my bolt 6 ARC with good results. I am running a 109 Berger and getting good groups. The problem I have is the SD and ES are all over the place. I was seeing that the N-133 has been in the 6PPC and kicking ass for a long time and was needing some input from ya'll about the possibility of trying it in a heavy bullet with the bigger case. The reloading manuals have it being used in the lighter bullets but not in the 95 grain and heavier.

This is a bolt gun not and AR.

Based on the data listed in the link below You can expect it to work though the velocity sacrifice may be difficult to accept with the heavier projectiles.

Personally I have been pleased with it with 80 & 90 grain projectiles with a bolt action CZ527 in 6mm ARC 22" barrel.

Rifle reloading data | Handloading | Rifle calibers | Centerfire Rifle bullets | Reload your own ammo - Vihtavuori

Vihtavuori offers rifle reloading data for numerous calibers and bullets for match and hunting purposes. Never exceed maximum loads.

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