Hello,
Is there anyone still making 600 Overkill brass ? evidently Horneber do on a Special Order ,but RCC and Jamison are no longer ,I asked Bruce Bertram would he declined saying there wasnt enough demand for him to produce it

contact ahr https://hunting-rifles.com/home/
AND bitterroot (a poster here) they should know

Thankyou Jeff

I do have a little bit of Jamison brass left and will sell some in small quantities. I do not plan on having more made, so for you who are thinking of buying a used 600 Overkill, make sure it comes with brass or loaded ammo. Otherwise, don't buy it.

Every 600 OK that went out of our shop included at least 100 cases or pieces of loaded ammo.

Also, the belt location on the Horneber brass is different than the Jamison, so be aware of that. All of the 600 OK rifles I built were chambered and headspaced for the Jamison brass. I even converted quite a few of the early Horneber chambered rifles to Jamison dimensions. Do your due diligence before buying a 600 OK.