I need to order a couple. Both Remington Model Seven actions

First is a 22-250. Their fit guide lists Remington 22-250 for both the #64 and the #4. Any idea what the difference is?

Second is a 6.5 Saum. The closest thing on their fitment guide is #4 (6.5x55) or #44 (6.5-284) or #68 (264 win mag)

Anyone have any guidance? I’ve both emailed and called Eric Sinclair at the contact info on their website and have not heard back

I’ve never held one in my hand before so I don’t really understand them or else maybe I could make a better educated guess

Thanks in advance