I have a surplus Chilean Army FN Mauser 98k in .30-06 that I put a Leupold 2.5x28mm IER scout scope on. It works very nicely. I chose the duplex reticle. The thicker outer reticle wires remain visible in low-light conditions, yet the fine inner reticle wires allow precise aiming at longer ranges in better light. It is quite fast to acquire moving targets closer up. I like this setup a lot. Expect to pay about $300 for that particular scope, plus mounts.
If you plan on mounting the scope "scout" fashion, forward of the receiver, then make sure it will have the proper eye relief.
'IER' = 'intermediate eye relief', aka a 'scout scope'. A short eye relief scope mounts in the conventional spot over the receiver. An intermediate eye relief scope is optimized to mount forward of the receiver on the barrel. A long eye relief scope is meant for pistols that are held out at arm's length.