Currently have a Leupold one piece but it's not offering enough eye relief with my burris.
After looking at the weaver bases I think that's what I need but can't seem to find what I need at Brownells.
Any suggestions what other bases/ rings combo?

Find a Tasco one-piece base and use whatever brand of Weaver-style rings you prefer.

You can move the scope back about 1/2" with extension rings. Make sure it is for the dovetail ring because they come both ways.

Here's a set on ebay. ebay link

I just put this 3.5x10 on a 243 with the Burris Signature Zee rings and Weaver bases a few minutes ago.

Weaver # 14 and 19 fit 99’s.

Thanks guys. Those weavers are what I'm looking at.
Just found them on Midway

Thanks guys. Those weavers are what I'm looking at.
Just found them on Midway
Thanks for the pics. I have a .308 I'm scoping and have a few options with scopes.

If there isn’t enough scope adjustment, Burris makes offset inserts to correct it, used them on one 99.

This is what I was dealing with.... but not anymore. Took it all off and ordered the weaver bases.

That’s big