I am a very new member and really new to Savage rifles. I just sold my 1K BR rifle with the third barrel on it. 6BR, 6BRX etc. I just bought a Savage model 12 BR in 6.5X284 online today. I should have it it in my hands next Wed. I would like to get all the reloading components ordered this weekend. New caliber for me so I have a couple questions. Read on another forum that there was a little difference in the diameter of the base of the brass from brand to brand. Supposedly Lapua, my brass of choice, bulges a little. Any truth to this? Second question is what scope base fits my dual port action? I did use the search looking for this info. I am old and a little senile so don't flame me too bad if I am in the wrong forum.