Rifle Scopes Rem 700 AAC-SD receiver plug screw size?

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Private
Minuteman
Jan 2, 2012
4
0
46
La Grange, Kentucky
I want to get a 20 moa one piece scope base. Some manufacturers have options for the Rem 700 short action with #6 or #8 size screws. I've looked all over and can't get a definitive answer on which ones I actually need. Where would I go to find this info?