Im fairly new to reloading so please bear that in mind. I have a Rem 700 police .308 bone stock from what i know and can tell. my problem is after i take once fired brass out of my gun I can neck size it and it will chamber just fine without a pill in it. as soon as i load it it will not chamber. i am under the SAAMI and from looking at it the bullet is not to far forward. so i have to FL everything for this gun. my neck sizers for all my other calibers work just fine. i am useing federal brass with 150gr sierra bt game kings. it not a big deal but just has me and a few others stumped. thanks for any input.