Just finished turning up some new Peterson Brass getting ready to break in a new Dasher Barrel. This is my first go round with Peterson Brass so after initial inspection all I can say is the quality appears to be right there with Lapua, tolerances in weight as well as neck thickness variations are excellent as well. Since I have never shot any Peterson brass before, I'll be curious to see if the Primer pockets hold up as well as the Lapua. If they are in the ballpark, I'll be thrilled. Now for the big Question, has anyone already tested some of the Dasher Brass and what was your opinion of it's quality and performance?
Peterson Dasher Brass?
- Thread starter Chuckhunter
- Start date
Walt Schmidlin
Gold $$ Contributor
Look at a picture of sectioned BR & Dasher brass posted by Spacegunr (on a Thursday at 10:10PM #34 on a thread most probably on the 6BR). My screen shot unfortunately did not show the date.
A friend bought 50 pieces, had pressure issues when he used his regular load. Showed him the picture posted by Spacegunr, he decided to fire form Lapua brass.
Find the picture, one of the best, looks like the Peterson brass should last a long time, primer pockets should be the last to loosen.
A friend bought 50 pieces, had pressure issues when he used his regular load. Showed him the picture posted by Spacegunr, he decided to fire form Lapua brass.
Find the picture, one of the best, looks like the Peterson brass should last a long time, primer pockets should be the last to loosen.
oht
Gold $$ Contributor
Peterson 6 Dasher Brass
Just got my Peterson 6 Dasher brass. @Ccrider have you had time to do any measuring? The necks on the few I sampled came in .0138 to .014 but a few other numbers are concerning. I'd like to hear what your sample measures to the datum and diameter just below the shoulder/body junction. just a...
forum.accurateshooter.com
Spacegunr
Silver $$ Contributor
The other thread is titled 'Peterson 6 Dasher Brass'. I have shot a few in testing and about 44 or so in a 600x3 match. I have no complaints about the accuracy performance of it so far, it seems to do just as well as my normal stuff which is fire formed Norma BR. My load in the Norma is 33.0 of Varget, to match the same speed in the Peterson brass I dropped the charge to 32.4 gr. Varget. Both using moly coated 105 hybrids.
wildcatter
Silver $$ Contributor
To me using Peterson Brass is backing up and defeating the purpose of the Dasher! It is much thicker, wich in real life is like opening up the 6BR Norma chamber, the putting a bushing in it, to restrict the amount of powder and size of the case. Yes it is less work, but anytime you restrict the capacity of any chamber you reach higher pressure with less of the same powder!
Much like now instead of reaching the Dashers best velocity you will now have to settle for more 6BR Norma like velocity at the same pressure slowing the capability of the Dasher to keep pressure in check. My buddy has played this game and liked the results as far as no work making cases, but has found any load with the Peterson Brass, he has to settle for less velocity to get anything near the same accuracy with it.
He made my choice easy,, why have a dasher if your going to settle for BRA performance?? The BRA is way easier to make, as well as gives just as good a results in his rifle. I won't make the jump to the BRA just because there isn't enough gain over the standard 6BR Norma case to make a difference out to 600 yards, in fact I think the standard 6BR Norma is the easiest to tune and least finicky of any of them, just me.
But make no mistake, when you restrict the capacity of the same externally dimensional case, you can not achieve the same performance with the out increasing pressures,, it is simply impossible! It also can make some of the slowest powders suitable in the Lapua case, a poorer choice in the Peterson case, and one thing most want in going to the Dasher is more performance (speed with the same accuracy). I say that in parenthesis to note know ay is the Dasher more accurate,, just slightly faster,,, until you restrict the case capacity you intentionally changed to get that performance!
This is what three Dasher shooters that shoot Bench Rest with their rifles have all experienced and told me! Like I said, for me even the slight gain in Lapua brass going to a Dasher is not worth the hassle to me, I would never sleeve my brass if I did go to the hassle of going to a dasher!
Much like now instead of reaching the Dashers best velocity you will now have to settle for more 6BR Norma like velocity at the same pressure slowing the capability of the Dasher to keep pressure in check. My buddy has played this game and liked the results as far as no work making cases, but has found any load with the Peterson Brass, he has to settle for less velocity to get anything near the same accuracy with it.
He made my choice easy,, why have a dasher if your going to settle for BRA performance?? The BRA is way easier to make, as well as gives just as good a results in his rifle. I won't make the jump to the BRA just because there isn't enough gain over the standard 6BR Norma case to make a difference out to 600 yards, in fact I think the standard 6BR Norma is the easiest to tune and least finicky of any of them, just me.
But make no mistake, when you restrict the capacity of the same externally dimensional case, you can not achieve the same performance with the out increasing pressures,, it is simply impossible! It also can make some of the slowest powders suitable in the Lapua case, a poorer choice in the Peterson case, and one thing most want in going to the Dasher is more performance (speed with the same accuracy). I say that in parenthesis to note know ay is the Dasher more accurate,, just slightly faster,,, until you restrict the case capacity you intentionally changed to get that performance!
This is what three Dasher shooters that shoot Bench Rest with their rifles have all experienced and told me! Like I said, for me even the slight gain in Lapua brass going to a Dasher is not worth the hassle to me, I would never sleeve my brass if I did go to the hassle of going to a dasher!
When I had my smith (WSMNUT) re-chamber my 6BR to the 6BRX I ordered 100 pcs. of Peterson brass for the new chambering. I now feel it was a mistake due to the fact that it weighs 10 grains more than my previous Lapua brass which DOES restrict the load volume. However, I have recently ordered Lapua brass to F/F soon.
I couldn't get close to 3k before it showed pressure signs
wildcatter
Silver $$ Contributor
Hard to beat Lapua brass! But like ChrisNZ said you don't always have a choice! The good thing is, from everyone I know that tried the Peterson it has been consistent, and will take the standing on it that most give it. It just seems Lapua has found that fine line between strong enough, and not over doing it.
I just started putting together a 6x47 Lapua and hoping I find the same fine line with it, as I have with the 6BR Norma, 8X57 Mauser, and the 220 Russian! Until I find a case that don't, I'll stick with what I have had my best luck with.
I just started putting together a 6x47 Lapua and hoping I find the same fine line with it, as I have with the 6BR Norma, 8X57 Mauser, and the 220 Russian! Until I find a case that don't, I'll stick with what I have had my best luck with.
KMart
Gold $$ Contributor
I have been less than pleased with Peterson brass in 6 Dasher and 243 Win.. I have found that the Alpha OCD brass will stand right there beside the Lapua brass. The large flash hole in Alpha is not a hinderance and fireforming the Lapua in 6 Dasher is a chore.
I blew mine out to 6BRX
A little off topic but: Is fireforming Dasher brass any different/more difficult than forming BRX brass?
I have a BRX and use the false shoulder method and have no problems.
Bob
PS: Just purchased some Peterson brass for my 6XC. Going to see how that compares to the WW 22-250 I have been using.
I have a BRX and use the false shoulder method and have no problems.
Bob
PS: Just purchased some Peterson brass for my 6XC. Going to see how that compares to the WW 22-250 I have been using.
Please post your loaded unturned neck diameter if you could, please? A friend bought some Peterson 6xc and it had a significantly thicker neck. Thicker to the point he had to neck turn it for it to work in his chamber.
Yes, if your chamber neck is cut on the small side you will have to at least do a slight turn clean-up to get proper clearance.
Since the shoulder angle is the only difference between the dasher and 6BRX I would think it would be about the same to fire form.
wildcatter
Silver $$ Contributor
I would definetly use Peterson over Winchester if that was my only choice. My Issue with the Winchester is the short brass life, one thing no one I've personally known has had an issue with.
wildcatter
Silver $$ Contributor
The Peterson is thicker brass, I have never measured it but anytime you infringe on the capacity of the case, you loose! If anything you just loose more with the Dasher Brass, and are still dealing with the hassles of forming 6BR Brass into Dasher Brass,,, and settling for less performance than you will get out of the Lapua Brass doing the same work.
dgeesaman
Gold $$ Contributor
I get that fireforming stretches and thins the brass. That’s my point - the Peterson dasher brass doesn’t get stretched and thinned out in the neck and shoulder as much as 6BR.
That said, I have Peterson and Lapua 6BR brass and even there the Peterson is thicker. So it will have less capacity as 6BR or a variant, of course. But that difference is a fairer comparison from a benchrest shooters point of view. (Comparing 6 Dasher made from 6BR)
Peterson Dasher brass is probably quite popular with the PRS crowd, who want the performance level of Dasher without the fuss and tears when pieces don’t get picked up. Cracking over 3000fps isn’t as critical.
David
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