Peterson Brass 6mm Dasher Unprimed Box of 50

Peterson Brass 6mm Dasher Unprimed Box of 50
Item #:PCC6DASH50
$1.26 per piece
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Due to the packaging and shipping process, case necks are often slightly dinged or bent and need to be rounded up and sized to give proper neck tension. New and/or fired cases must be full-length resized or have the expander ball of the sizing die run through the case neck prior to loading.
Read 16 Reviews

Product Information

All 50 count listings of Peterson Cartridge casings come in one of their plastic ammo boxes.

Made in the U.S.A.

Featuring a 40-degree Ackley-type shoulder and 10 percent more case capacity over the parent 6mm BR case, the 6mm Dasher has been used to set records in the 600 and 1,000-yard benchrest community, and has become a favorite among competitors in the Precision Rifle Series as well.  

“The PRS community and the long-range benchrest guys are groups that are important to us” stated Peterson Cartridge president Derek Peterson. “We already make most of the common PRS cartridges, so the 6mm Dasher was naturally next in line for those guys looking to compete with a long-range 6mm, with minimal recoil. The 6 Dasher is one of those cartridges that packs a ton of power and performance in a tiny package, and we decided to make them based on requests from our friends in these disciplines” Peterson said.

The 6 Dasher made by Peterson are offered in Small Rifle Primer (SRP) pocket size only. They have a .060” flash hole diameter, same as Lapua’s small rifle primer pockets. They will require a small de-capping pin, just like Peterson’s 6 BR casings. There is no SAAMI or CIP spec for 6mm Dasher. So, the caliber development guys at Peterson had to decide which dimensions they were going to make their casings to. Regarding Length-To-Shoulder (LTS), Peterson consulted the Sierra, Berger and Lyman reloading manuals and designed the Peterson 6 Dasher casings to comply with the guidance from all three manuals. 

Regarding Overall Length (OAL), Peterson researched all the popular chamber reamer sizes, and decided to make its casings with an OAL of 1.53” + or - .0005, so they’ll fit in the common 6 Dasher chambers. The base diameter of Peterson 6 Dasher is the same as the base diameter of its 6 BR casings. Plus, these Dashers have the correct neck wall thickness of .0013”. 

Peterson concluded, “No more need to fireform or hydroform 6BRs. Now you can get properly headstamped 6mm Dasher, with the ideal neck wall thickness and harder heads than the other competitors.” 

Warning: Only use Peterson Cartridge Co. casings in firearms in good condition, designed, marked, and chambered for this cartridge. Do not use Peterson Cartridge Co casings for “fire forming” or any other purpose other than what they were designed and tested for. Peterson retains no responsibility for the enclosed casings if they are used outside of the manufacturer’s recommendations.


This is not loaded ammunition.

Read 16 Reviews - Average Rating: 5 stars

Peterson Dasher Brass.

By Garrett W. on Jan 22, 2024
G&S is a great company and this brass is top notch. Could not be happier. I will be buying a lot more components from this company

Great brass, fast shipping

By Wynn W. on Dec 28, 2023
Peterson is fantastic brass, Grafs makes it easy to get in a timely fashion. Great company to deal with.

peterson brass

By Phil C. on Nov 29, 2023
I have been using Peterson brass for a couple of years now. You won't find better quality brass imo.

Peterson 6mm CM Brass

By Timothy D. on Nov 23, 2023
Great brass and has lowered my SD & ES… can’t ask for a better product and will be a loyal Peterson Brass fan for life!!

6mm Dasher Brass

By Chris W. on Nov 02, 2023
I was initially waiting on Alpha brass, but decided to order Peterson due to availability. The brass arrived neatly packed in 50 round plastic cases and was in near perfect shape. Very high quality, wouldn't hesitate to buy again.

Peterson 6mm Dasher brass

By Troy S. on Nov 01, 2023
I've always used lapua brass and love it. However I could not find it in stock. Grafs had Peterson in stock decided what the heck. Very happy I did. From packaging to how this brass specked out Very impressed. Grafs as always packaged and shipped expertly, quick. Thanks Grafs!!

Peterson 6 Dasher brass

By Scott W. on Sep 21, 2023
Peterson brass is gaining a big foothold in the competition circles, F-Class, Benchrest. and PRS. I feel Peterson is as good or better than Laupa and it's made here in America using American workers! With the inability to get Laupa brass, and an overseas company that could care less about getting their products to American shooter, Peterson is a natural fit to take the market! Thanks, Graf's, for keeping a good supply of this great brass.


By Chris L. on Sep 14, 2023
Great product very well made

Peterson 6 Dasher brass

By Glenn L. on Aug 15, 2023
Good brass! Have been using this brass for about 2 yrs.
Just as good as Lapua without reforming 6BR brass.

Peterson Dasher Brass

By Steven R. on Jan 10, 2023
Looks like solid stuff. Can't wait to get it to the range.


By JANEE P. on Feb 10, 2021
This brass is beautiful and so consistent!

Peterson brass, 6 Dasher 👍🏻

By Don S. on Nov 24, 2020
Very well-made uniformed brass. I don’t know how many firings this brass is good for but stay tuned. Don’t speculate, just buy.

nice brass

By James H. on Nov 24, 2020
Nice brass. Packed well so no dents in case necks. I measured the necks at 13.5-14 thousandths. The Lapua I have is all 13 thousandths. Will be buying more.

Petersen 6mm Dasher Brass

By Michael R. on Nov 24, 2020
Excellent consistent brass. Uniform primer pockets.

Peterson 6 Dasher Brass

By Timothy C. on Oct 13, 2020
I am reporting my likes about the Peterson 6 Dasher brass. Its weight is very uniform also the neck thickness although thicker than what I have used in the past was very consistent. I am very happy Peterson decided to make Dasher brass.

Very Well Made Brass

By Hurtford S. on Oct 07, 2020
It is a lot heavier than the fireformed Lapua, so do adjust your loads downward and work up
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