224 Valkyrie
Since 1976

Unprimed Brass Cases

10MM Auto Brass (Large Pistol primer)

10mm, 10Auto, 10mm Automatic
0.984 - 0.991 O.A.L.

10mm Auto Brass - The 10mm Auto was designed primarily for law enforcement but was quickly abandoned in favor of the .40 S&W. Now making a comeback, this .40" caliber handgun is more powerful than the .45 Auto with higher magazine capacity.

Status: Available Now

Box of
10MM Auto Brass

*Starline Brass does not sell any loaded ammunition. What you are purchasing are brass cases only and will need to be loaded into ammunition in order to be fired from a firearm.


Overall Rating
5 Stars5 Stars5 Stars5 Stars5 Stars
Reviews: 31
Bert H of Demotte, Indiana
5 Stars5 Stars5 Stars5 Stars5 Stars
This brass in my Dillion 650 with Dillion Dies is so smooth it is like I am working with a soft warm stick of butter!

Larry K of Las Vegas, Nevada
5 Stars5 Stars5 Stars5 Stars5 Stars
fine brass and fine people. Never a hitch in dealing with them.

Mr N of Jacksonville , Florida
5 Stars5 Stars5 Stars5 Stars5 Stars
Best brass on the market, very clean and uniform. I highly recommend.

Roy B of Humboldt, Tennessee
5 Stars5 Stars5 Stars5 Stars5 Stars
Have bought several thousand rounds of 10mm and 40sw brass over the years, Never disappointed. Friendly folks, fast delivery when item is in stock. I use starline 100% these days.

Shawn G of Clinton Township , Michigan
5 Stars5 Stars5 Stars5 Stars5 Stars
Every piece of brass that I have used so far before sizing has been approximately 0.002 before sizing after sizing I'm right where I want to be 0.987 though that I bought about 500 pieces from different Lots every one of them has been consistent

Philip D of Shell, Wyoming
5 Stars5 Stars5 Stars5 Stars5 Stars
I use these cases to form 9x25Dillon brass, and with excellent results. The brass is very uniform and runs smoothly through the forming die with just a touch of simple inexpensive plain Vaseline. philimandias - Belgium

Tom P of Norwalk, Connecticut
5 Stars5 Stars5 Stars5 Stars5 Stars
Starline never fails to impress. Their brass is worthy of your time and effort of reloading the perfect round. Anytime I decide to make that "uber" loading in that pet caliber... I always reach for starline.

Philip D of Shell, Wyoming
5 Stars5 Stars5 Stars5 Stars5 Stars
Excellent and very uniform brass. I also start with these to form 9x25Dillon cases for use in my Dlask Master Class race gun, and they last very well. philimandias - Belgium

Andrew G of Steamboat Springs, Colorado
5 Stars5 Stars5 Stars5 Stars5 Stars
Purchased twice so far, will be buying more. Best 10mm brass.

Tony H of LaFayette, Georgia
5 Stars5 Stars5 Stars5 Stars5 Stars
I have used Starline brass for many decades now but only the 10mm just in the last 3-4 years. The 10mm brass has stood up very well to medium to hot loads. Some of the brass has been loaded 4-5 times and I haven't had to trim it yet. I have some DT brass that has had to be trimmed but the Starline is still going strong. Great product.

brian r of williamsburg, New Mexico
5 Stars5 Stars5 Stars5 Stars5 Stars
Id give a 10 if I could, very consistent diameter. With the 10mm, I didn't even need to run them through the sizing die before loading. I've loaded these brass with 10.2 Longshot, 180 Montana Gold and have had 6+ loading's. No signs of brass deformation as of yet.

Norm F of Vallejo, California
5 Stars5 Stars5 Stars5 Stars5 Stars
I was new to reloading and purchased once fired brass from various sellers. I had to clean measure and trim most pieces. Then the number i had to discarded was discouraging. As a newbie to reloading i was very careful to follow best practices when preparing brass for reloading. Finding 10mm to reload was impossible. After finding Starline i don't even do the once fired stuff anymore. It is so much easier to use high quality better priced new brass. Starline even sells new .454 casull to reload. the price on once fired was crazy and that's if you could find it. I say this again, Thank You Starline.

Rick B of San Jose, California
5 Stars5 Stars5 Stars5 Stars5 Stars
I shoot over 50,000 rounds a year in competive shooting. I exclusively use star line in both my production and unlimited pistols. It's a fair deal for the highest quality brass period.

John W of Lexington , Kentucky
5 Stars5 Stars5 Stars5 Stars5 Stars
I have been using Starline brass for over 10 years. It is the highest quality brass on the market. Amazing quality at a fair price. I always recommend Starline to anyone interested in reloading

Clos N of N. New Haven, Connecticut
5 Stars5 Stars5 Stars5 Stars5 Stars
Best brass in the industry. Have reloaded and reused this brass several times and still looks new when cleaned. If ur looking for quality brass starline is ur only choice.

Alan C of Odessa, Texas
5 Stars5 Stars5 Stars5 Stars5 Stars
I have reloaded almost every brand of brass in the last 35 yrs. I ordered 1000 pcs of 10mm Starline last spring and have reloaded almost all of it once .This is great brass .It is smooth and consistent with no issues what so ever .Great price too ,Less expensive than the range brass hounds wanted for once fired pickup brass....Thanks Starline for a great product at a great .

David P of Satellite Beach, Florida
5 Stars5 Stars5 Stars5 Stars5 Stars
Chances are good that if you are already here looking for 10mm Auto cases, you already know they are THE choice manufacturer. But for those budding 10mm handloaders, here's my experience and why they deserve and get excellent reviews. I started out using Starline brass cases for 10 MM Auto about 4 yrs ago and have continued with them since. Products have literally been perfect. No defective pieces or loading issues (press&firearm) ever. Their customer service and product quality is the best in the industry for 10mm Auto hand loaders. As a result, I'm a customer-for-life. I have ordered several thousands of cases. On one occasion, I had ordered (4000) 10mm on backorder (ca. 2013). Once they were produced and ready to ship, I received a personal call; twice in one day (I missed the first call) from a customer service rep to verify and ensure my product order was acceptable b4 shipping. That is just fantastic customer service! I am still reloading that same lot of cases to date, three years later. Starline Brass is my one-stop shop for new high quality cases.

Dan E of State Center, Iowa
5 Stars5 Stars5 Stars5 Stars5 Stars
No issues at all , brass was in perfect condition , checked threw case gage first with all in spec flared and loaded gun runs great with them .

Frank M of Lumberton, Texas
5 Stars5 Stars5 Stars5 Stars5 Stars
I ordered 5,000 of these before, only have 500 left, so I ordered another 2,000. These things ran like peanut butter and jelly on my D-650. I have not found a single flawded piece of brass. keep up the great work, Starline. Have a blessed day. fm

5 Stars5 Stars5 Stars5 Stars5 Stars
starline brass is of exceptional quality, very consistent in length and the flash holes are excellent

George R of Archdale, North Carolina
5 Stars5 Stars5 Stars5 Stars5 Stars

John H of Greensburg, Pennsylvania
5 Stars5 Stars5 Stars5 Stars5 Stars
I've been reloading for over 45 years and have reloaded just about every name of brass on this Planet, and would rate Starline brass the best brass available for reloades. I rate them right up there with Norma Brass which I considered the Worlds finest. Starline Brass is uniform and their primer pockets should be the envy of the industry, always making the priming operation a breeze. They use only quality brass that will give a average reloader many reloader. Going forward Starline will be the only brass on my reloading table.

Glenn S of Colorado Springs, Colorado
5 Stars5 Stars5 Stars5 Stars5 Stars
I've given up on once fired brass sense I started using new Starline; ready to load right out of the box. Always exceptional quality. Now I use only Starline for all my pistol calibers. Thanks.

steven t of pacific, Washington
5 Stars5 Stars5 Stars5 Stars5 Stars
i ordered 1k 10mm auto brass. there's nothing bad i can say about it other than i wish i could still order some, im not sure why it is never available. please consider making this other then in small batches.

Chris A of Oklahoma City, Oklahoma
5 Stars5 Stars5 Stars5 Stars5 Stars
I should have bought more when it was in stock. I bought 500 nickle and 1000 brass and have reloaded both 3 times without fail. Excellent quality first loading, second loading and still holding perfect on the third. Very highly recommend.... after I get stocked back up, of course

benjamin h of midwest city, , Oklahoma
5 Stars5 Stars5 Stars5 Stars5 Stars

Mike H of South Milwaukee, Wisconsin
5 Stars5 Stars5 Stars5 Stars5 Stars
I've ordered 2000 of your 10mm Auto cases and every one has been flawless. Keep up the good work!

Rich M of Eugene , Oregon
5 Stars5 Stars5 Stars5 Stars5 Stars
Purchased the 500 round option. All cases were within 0.1 from speck with around 90% all the same size. Better that 99% of the brass I am used to using. I load to over max and have been able to get 3 reloads from a case and have reloaded some cases 6 times with moderate loadings. What do you want to know about this brass? I was very satisfied. Liked it more than other major manufacters. As far as new brass goes this was very pleasurable to reload from consistency being so well. I also trusted it more. I have not had one starline brass case in any loads I used be one that I would ever put in the lesser pile. Elricker, OR

Jeffrey A of Laverkin, Utah
5 Stars5 Stars5 Stars5 Stars5 Stars
Absolutely awesome pricing for a quality product. I've purchased 3000 of these gems in the past 3 or 4 years and I don't even shop anywhere else because nobody can beat this quality and prices.

ed s of wallowa, Oregon
5 Stars5 Stars5 Stars5 Stars5 Stars
I first purchased 200 new 10 MM auto brass. I mesure and trim every piece i shoot and/or purchase. I also uniform/drill the flash hole on all brass. I went through 100 of my new brass and to my total surprise there was no shavvings...only a slight bit of brass dust. I have never seen such results. I weighed the cases and surprised again. The flash holes were perfectly clear...NEVER seen that before with any brass, European or American. I then investigated to find that Starline punches the brass not drills it to leave ridges of brass build up in the case. Thank You Starline. Ed Sparks

stu r of talkeetna, Arkansas
5 Stars5 Stars5 Stars5 Stars5 Stars
Your brass is reasonably priced and cost the same as others selling once fired brass! I have always had great service from your company and from your brass. I recommend Starline Brass to my reloading buddies!