Starline's manufacturing process involves, consistent metallurgy, precise tooling, tight quality control and 40 years of industry experience. Their brass is guaranteed to have flash hole presence and to be of the correct length and diameter. Unlike some competitors, Starline’s brass is vertically drawn, effectively minimizing wall thickness variation. In addition, they anneal their cases between each draw to ensure consistent metallurgy in all lots. Simply put, they are unwavering in their commitment to quality.
I placed an order for once fired 223 brass and when I received it I was amazed on the quality of the brass (excellent), the prompt service, I will be ordering from Diamond K Brass in the future. Keep up the great service and products.
Aaron May 17, 2014
Great company selling high quality product at a reasonable price. What more could you ask for?
I don't even check other suppliers anymore.
Jim Ledford Dec 27, 2015
Been using Diamond for a while now and if any problem call Tammy and she makes it right, or just call and say Hi. Great people to deal with. Have ordered from 22TCM up to the 458 Win Mag and all the pistol brass in between., never a problem, thanks Diamond and Tammy
F/V RUFFIAN Feb 27, 2020
Diamond K Brass never disappoints. Always prompt shipping and better than expected quality.
Raymond Kulacz Oct 31, 2020
ordered1000 9mmbrass came polish and deprimed was amazed at the quality it really looked like new brass. There service 100 percent great people to do business with.
richard Mar 25, 2021
I always buy brass from Diamond but can never find a history of the purchases. Oh well, the brass comes in when I expected it but it would be nice to be able to look up past orders. I hope someone tells Diamond K how to make that happen.
Billy C Wilson Apr 17, 2015
Wow, ordered and three days later the brass showed up, all good quality and NO junk.
Have ordered from others that took forever to receive and the brass wasn't nearly as good.
Richard Byrne Nov 15, 2014
Just received my order of 500 processed .223 brass! You really couldn't ask for better service, these people treat you like family! The order is perfect, with an extra 25 brass, and two day shipping from Arizona to Tennessee!! No need to shop anywhere else.
Zachary S Conner Mar 26, 2015
I have done business with Diamond K for years, started in 2008 after the presidential election. Quality products fast shipping and very reasonable prices for the high quality. You can not go wrong. They even e-mailed me once t o want to know if I wanted to fill the of because of a special, and I said yes.
clifton crowson Aug 28, 2018
Great brass at great prices. I have ordered both pistol, and rifle brass and usually receive 15-20 additional cases with each order. brass is high quality with no more than 2 cases that are rejected. I highly recommend Diamond K when purchasing brass.