Blue Box 6BR Brass Flash Holes

[SHall]

I have been using the cardboard box 6BR brass for years and am just starting to prep my Blue Box 6BR brass. I actually got this brass when the Blue Ramp Boxes just came out. I heard from one person that the flash hole diameter inthe blue Boxes varies from something like .059 to .062. is this correct information. Has anyone measured the flash bole to confirm this? i am wondering if i need to ream the flash holes with my Sinclair tool to .0625? Thanks, Samuel Hall

 

[tclaunch]

I use the K&M tool, and think it a good thing for uniformity.

 

[johara1]

The flash holes vary up to .0635 -.064 but very few. I use a .0625 reamer and i don't do anything to the inside....jim

One other thing some are very hard and i anneal before fire forming.....

 

[johara1]

Tom, I used the same cases all year,over 30 firings. For the Dasher they blow out to1.550-2 and i anneal before i try to FF. now,seems to work better. PM me and i'll tell you a little on getting them longer...... jim

 

[SHall]

Thanks for the replays guys! Looks like I need to get my flash hole reamer out. The Blue Box brass I have seems to be softer in the neck than my old card box brass. I had to size it down an extra two thou. To get the same tention.

 

[FroggyOne2]

One would wonder why quality control would change? Hmmmm
tom

Usually, QC will faulter when production is sped up to meet demand.

 

[jonbearman]

I hope kevin thomas chimes in for an explanation.

 

[johara1]

They run the tooling longer to cut the cost,I never seen neck tension vary like this new right out of the box stuff. ....jim

 

[Leaddog]

I recently bought 2 boxes of 6BR blue box brass. 80% of the brass had burrs. Only the 21st Century tool would clean them up satisfactorily.

 

[johara1]

Boy this is starting to sound bad...... jim

 

[johara1]

Tom, You must like abuse ).......jim

 

[drumcorpschamp]

OK guys. If the Blue Box brass is such "junk", I'll sell the 400 pieces that just came in today's mail and buy.....what? C'mon....give it up.

I am pretty new to the game and don't think that I harbor great knowledge. Be nice, share.

One of my bench guns is probably going from 6BR to 6 Dasher and the other 6BR is going to be a 30BR. Have new barrels arriving tomorrow and as I stated above, the brass is already here.

Thanks,
Jerry

 

[gotcha]

Just a side note here, really. My experience w/ 6.5X47L blue box parallels the 6br blue box experiences stated above. My decapping pin was actually swaging some flash holes. Didn't get my best groups 'til I annealed the cases after 2nd firing due to inconsistent bullet seating pressure. Thought I was "losing it" 'til I read this post. Thanks guys!

 

[xswanted]

OK guys. If the Blue Box brass is such "junk", I'll sell the 400 pieces that just came in today's mail and buy.....what? C'mon....give it up.

I am pretty new to the game and don't think that I harbor great knowledge. Be nice, share.

One of my bench guns is probably going from 6BR to 6 Dasher and the other 6BR is going to be a 30BR. Have new barrels arriving tomorrow and as I stated above, the brass is already here.

Thanks,
Jerry

I'm with you on this. After reading this thread it would seem that using the new blue box brass one could expect 3 inch groups at 100 yards with a BR or Dasher.

I have quite a bit of the new blue box stuff, and not knowing any better, have had what I would call pretty good luck. And I haven't done much for case prep. (just getting into more and more of the "little' things" that go a long ways!)

And by the sounds of this thread the old brass would shoot .5" groups at 600 yards without any trouble.

So those of you that are learning the "tricks" with the new stuff, care to share any tips you have in prepping the brass? I'm interested to learn what I can do to further improve the accuracy of my Dasher or my 20BR.

 

[xswanted]

On another note, is the Norma brass any better than the blue box Lapua?

 

[xswanted]

Norma does not take the pressures of dasher loads(mine anyway).

Jim and Donovan seem to be getting the tricks figured out. And i will as i bring it into service. I'm not saying it won't shoot, but there's gunna be a lot more "culls" than we were used to.

The old stuff will shoot .5" at 600 btw, and I'll bet the new will too...there's just gunna be a whole bunch more sticks in the sighter pile.

Tom

I know this, however the way it sounds by this thread is that i could load anything in there, do nothing to the brass and it will perform.

 

[FroggyOne2]

This is why I ream flash holes.

 

[johara1]

Tom, You have to learn to dance with it..... It does work but as Donovan said it a different animal. I will make a blanket statement here, that when i get done making a 100 cases for the Dasher, 85-90 will be match quality for 1K bench rest.
This is a lot of work and raises the cost per round a bunch,flash holes, primer pockets, short and cracked shoulders informing are some but not all of the problems. The end results are worth it, i would be hard pressed to find anything to keep up with it. I don't shoot a heavy gun so this maybe a different story. I do notice Sally shoots a very good heavy gun and it's a Dasher.......jim

 

[Phil]

Donovan,

Here is a statement you made in a post... But on the Blue-box, the best I can get them out to is 1.546" (from completely different loads and techniques) and can't grow them but to about 1.550" at best.

How do you get the brass to grow from 1.546 to 1.550??? Additional firings.

 

[drumcorpschamp]

Gentlemen,

Thank you! These are the types of replies that I was looking to incite from my previous reply. Please keep them coming as I have a LOT to learn.

I really like the long range game and realize that consistency is king. Hope it doesn't take me too long to absorb and apply. Always learning!

Jerry