The only 6.5/284 I ever played with was set up, on purpose, in a Mod 700 short action. It was chambered with the reamer for the "Wildcat 6.5/284" as this was a few years before it was SAAMI'd. As I understand it, the SAAMI reamer has a longer throat. My reamer cut a shorter throat, which was perfect for me as I just used two bullets- the Nosler 125 partition and the 120 Nosler BT. I used necked down ( no neck turning for me!) .284 Winchester brass and I got 3200fps from both bullets. Later, when it was SAAMI, I tried the new Hornady, Norma and lapua brass and none could give me 3200 w/o stretching the primer pockets badly. Oh I got 3150 just fine, but tha wasn't "the point"! ha. I see guys out here who use a long action and have the 140s seated way out and throated accordingly. OR, you can use the 6.5 Sherman in that long action, yeah baby, yeah!
