6 UM Reloading Thread

[Odd1out]

I've seen anywhere from 600 to 800 round count for barrel life on the 6um. I'm wondering how many reloads ppl get from the adg brass. I want do a 6um30. Just trying figure a rough estimate on how many pieces of brass to get to cover my barrel life.

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[amassi]

I've seen anywhere from 600 to 800 round count for barrel life on the 6um. I'm wondering how many reloads ppl get from the adg brass. I want do a 6um30. Just trying figure a rough estimate on how many pieces of brass to get to cover my barrel life.

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I’m getting an average of 5 firings of 6UM/40 before retiring them. So far it’s all been 6.5 saum brass I’ve resized and fire formed. Not sure if the ready to load 6/30 might go another firing


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[Ryan Avery]

I have burned down three barrels for science. The average is 690 rounds.

My average is five reloads before I lose the primer pocket.


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[cq0302]

Different suppressor.. Used the Dead Air Sandman Long (That weighs about 40 lbs lol)

Any determination on what was causing the flyers?


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[TradLife406]

Anyone load 115 Bergers? Still 66 grains of n570 I'd assume?
Got DTacs. But Bergers are easy to come by.

 

[The Fish Box]

Does anyone know what the velocity limit is for the 115 dtac?

 

[ACHILLES]

Seems like guys are successfully running 3400fps in longer barrels with a 7.5 twist. That’s 326k rpm but I doubt the 115s will take much more rpm’s than that in a worn barrel.

 

[The Fish Box]

I’m currently a little north of 3,400 fps and was just wondering how they will like that when the barrel gets a little rough.

 

[ACHILLES]

Well I’ve had a positive experience with the 25cal 131ACE also made made Sierra.
One of my barrels had 1320rounds on it running 3170fps in a 7twist which is also 326k rpm. And I’m still running that bbl just shortened it.

Not exactly Apples to apples but might ease your mind a little.

 

[Ryan Avery]

On our 30” comp rifles, we hit 3600 fps with no issues with an eight twist

 

[Ryan Avery]

View attachment 950528


@Ryan Avery WTF???

Tapatalk ….

 

[TradLife406]

That'll do. I must have induced some error to that one. Best 100 yard 10 shot group I've ever shot.
22". Ryan said I must have a slower lot of n570.
Not sure about that first shot at 3164.
I shoot prone in a piece of state ground. Sometimes I'll have grass in the way. I deleted that shot for an average of 3218.

 

[PathFinder]

Has anyone used H1000 exclusively through an entire barrel? I've been playing around with smaller cartridges this year and liking them overall, but had a couple situations that have me looking back at my 6 UM again. Now that I have a lathe, the plan is to set the current chamber back as far as possible and chop from 24 to 20. The goal for the load will probably be 3100 fps with a 115 grain bullet and ~64 grains of H1000. It would be awesome to see 1000 rounds on a barrel, will H1000 allow it to go that long? A lot of guys claim ~40% increases in barrel life in 243/243AI chambers when switching to H1000, the hope is that it will do the same with the 6 UM.

 

[cq0302]

Wanted to put another option for a fire form load out there that gave me a very nicely formed case:
108 eldm at jam +.020
52.5gr mag pro (had a bunch of older stuff with a $25 price tag!) federal 210 primer

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