i read somewhere that there are several locales in the USA where a lot of hunters shoot the 165 grain RN corelokt load out of their 280s. so i bought a box out of sheer curiosity... ... ... and got six inch groups at 100 yards. Dang. I decided i did not need to experiment any further, and went back to spitzers. i hope you have better luck with RN bullets in your 30-06...
