What I truly appreciate is shooters who are willing to help and think outside the box. Yes Tom is exploring new avenues and testing in conditions that most of us will never do. Thank you Tom and Alex for trying to expand the sport, your results may not help all but you are trying to help all. You have my utmost admiration. Thank you.
Alpha 6BRA brass
- Thread starter savageshooter86
- Start date
I have followed Toms and Alex’s posts for quite some time. The crew in Montana are not stupid, they do post unbiased truthful information which will help. I shoot in a completely different environment but there information has been extremely beneficial in my shooting experience. I have been shooting completely at 1000 yds for more than 30 years. Successful people open their eyes to new ideas and thinking. Nothing remains stagnant. Someday I would like to have the opportunity to meet them and shoot at their range.
Alex Wheeler
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When Alpha came along with their brass it seemed that a lot of guys didn't want the .080" flash hole. The common knowledge was that .060 was best. But I have never seen the data. Who did the testing and under what conditions? I have never seen it published or even heard from someone with first hand knowledge of the testing. Even if it was done, Id bet it was in a ppc and would it even apply to the dasher or bra case with the powders we run? Alpha was on board to get me some brass without holes so we can test ANY size, so we are on board to see what can be learned.
Works for me. Let us know if you find any conclusions you can verify.
@tom and @Alex Wheeler Thanks for all the data and testing y’all do. And are willing to share most of what y’all can to help us mortals do better and shoot smaller groups. Can’t wait to see what y’all conclude
tom
Gold $$ Contributor
I personally find it fun, as it is interesting. I'm thinking I'm going to throw my shit in the truck here about the 15th or so, and go test in the desert sw in some warmer temperatures. It's either that or wait until August here lol.
I have no clue how .080" was decided for large rifle. I'm pretty sure lapua just scaled down the large ratio and rounded to the nearest metric available tooling for their small rifle stuff.....But possibly it was put through the testing and the data just hasn't crossed my path?
Tom
lawman29
Gold $$ Contributor
For the OCD crowd:
So maybe test ~ 3mm or 0.10 from above
So maybe test ~ 3mm or 0.10 from above
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One would assume testing was done to come up with these specs for other brands of brass. But like you find it interesting that the small changes are making a difference on paper so far. So makes one wander how much more could be gained by changing flash hole size only on the brass. I find your data interesting. And targets don't lie. And I fully uderstand this is initial stage of testing and like you said many rounds will need to be shot and targets analyzed until any full conclusion can be made. Keep up the great work. Can't wait to get my barrel and do some testing
Alex Wheeler
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Very well could be the case. But he didnt say 80 was best, just that it is also good. I do not think hole size will correlate with temps from what I have seen at this point.
Mulligan
Silver $$ Contributor
Some might find this interesting.
Results showed that muzzle velocity and chamber pressure varied 1-4% from the control flash hole as hole diameter, offset, and orientation changed. The precision, particularly in the 3mm diameter and centered flash hole cases resulted in improvements of up to 28%. Variations in flash hole diameter, offset, and orientation do affect cartridge performance. Alternate flash hole diameters exist that improve powder ignition consistently as well as precision.
CW
Results showed that muzzle velocity and chamber pressure varied 1-4% from the control flash hole as hole diameter, offset, and orientation changed. The precision, particularly in the 3mm diameter and centered flash hole cases resulted in improvements of up to 28%. Variations in flash hole diameter, offset, and orientation do affect cartridge performance. Alternate flash hole diameters exist that improve powder ignition consistently as well as precision.
CW
No, I understand but so far the test is good but in the cold. I don't think the .080 is either but that is to be seen. May just have to do with the pressure it will stand. Send Tom south, he needs a tan ..... lol.... keep up the good work.... jim
It's coyote calling weather.
Jud96
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I have really enjoyed reading through this thread. This level of testing and data collecting is what I love to see. Unbiased, real life testing like this is great. Good work @Alex Wheeler and @tom. You guys always share excellent information and testing results.
Northridge
Gold $$ Contributor
Lol i get it but i would actually trust the solid color 30.2 not the split not at all because they are together but because 30.2 is in full compensation.
Shawn Williams
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