Starline Releases .300 Blackout Brass And Reveals More Planned Calibers

Back in April, we told you guys about Starline adding .338 Federal to their product lineup and said that Starline would be offering .300 Blackout brass in the near future. You can read that post HERE if you are so inclined.

Well, friends, the future is here. Starline has officially announced they have added the .300 Blackout brass as an option for reloaders looking for super high-quality brass that won’t break the bank. Still no work on when they will be releasing the 6.5 Creedmoor brass that I am rather interested to see. It looks like they listened to the commenters and are going to produce both large and small primer versions of the 6.5 case. I don’t know about you, but I am kinda excited to see those cases.

The press release also indicated that in addition to the 6.5 Creedmoor brass in both large and small primers, they will also be offering .450 Bushmaster, .243 Winchester, .223 Remington, 7mm-08 and .260 Remington. It appears that Starline has taken notice of the growing number of precision shooters and are adding several cases that long range shooters tend to gravitate towards as well as som more common ones.

The .300 Blackout brass that Starline has rolled out is available now in their web store starting at an MSRP of $70 for 250 cases. It appears they are shipping orders at the end of the month. You can learn more about the brass on the Starline website.

Patrick R

Patrick is a Senior Writer for The Firearm Blog and TFBTV Host. He likes guns and has liked shooting guns for as long as he can remember. You can follow Patrick on Instagram @tfbpatrick, Facebook, or contact him by email at

The above post is my opinion and does not reflect the views of any company or organization.


  • Robert R Ramos

    300 BO is gay

    • Spencerhut

      You mean happy?

    • RocketScientist

      YOU’RE gay

    • USMC_grunt2009-2013

      Your mom is gay.

  • Aono

    “It looks like they listened to Aono and are going to produce both large and small primer versions of the 6.5 case.”

    FIFY 😉

    This is going to make a lot of people very happy, and I really look forward to the benchrest and PRS guys doing apples to apples testing of small vs large primers in 6.5.

    • USMC_grunt2009-2013

      If the military ends up adopting one of the 6.5mm calibers in even a limited role it will be all over the place in the American shooting community in no time. Traditionally America looks to their police for their most popular pistol (was a S&W/Colt .38, now is Glock/other striker fired polymer in 9mm or .40), and the military for the most popular rifle (was M1903/M1 Garand/M14 in .30-06/.308, now is clearly the AR-15 in 5.56).

      • neckbone

        When is this gonna happen?

  • Spencerhut

    Good timing since I was just about to start making some 300BO out of .223s today.

    • BillC

      Do it anyway. #allthebrass

  • Christian Hedegaard-Schou

    Starline makes great brass, and if I was doing precision .300BLK reloading, I’d definitely buy some.

    It’s a great option for a smaller ammo shop to crank out production ammo using virgin cases instead of 5.56 conversions.

    That said, as a reloader I can pick up more .223/5.56 brass for free than I can carry at almost any range I go to which makes for easy and cheap conversion to my .300BLK plinking brass.

    • neckbone

      Now if they would come out with 6.8 spc brass.

  • Raptor Fred

    Very pleased to see Starline get into more rifle cases. They sure do make great brass.

  • Django

    The Starline lineup just gets better and better!

  • John Daniels

    If someone from Starline is reading this, please start making 7,5x55mm Swiss brass.

  • Michael

    How about some 6.5 Grendel brass

  • Wow!

    While I always appreciate the expansion of the x35 lineup, at that price, what is the point? I can buy 1000 cases of 5.56 lake city brass on gunbroker for $60 and size and trim them all into fresh blackout in just 2-3 hours.