Here are a few worth looking at:
Nitrex TR1s or TR2s, basically same as Weaver Grand Slams or Super Slams.....various discontinued Nitrexs available from Natchez Shooters Supplies. Have a couple of the TR2s.....really good glass and features...after rebate cost will be around $218 to $280 depending on model. Have two of the Nitrex TR2s and they have surprised my fellow range shooters with their quality, comparable to brands costing alot more.
Swift Premier 6-18X44 AO model 669M. Swift makes a decent scope with pretty good glass. Now have 3 of the 669M, all mounted on centerfire rifles. Swift's been making midrange priced scopes for quite awhile....never a big name brand/high priced maker like Leopold, Nikon and etc, but you'll be hard pressed to find anything negative about the brand on internet. So happens the 669M has been discontinued and you can find one for $109 + about $9 shipping at
www.thesportsmonkey.com Other 669 M type scopes still available that has a different suffix meaning different turret/reticle. Optics Planet sells the 669M for about $220. Premier one of their top line of scopes.
Pentax Pioneer 4.5-14x42 at
www.BestBuy.com Best Buy price is $135 plus shipping. This pentax scope basically same as the Burris Fullfield II 4.5-14X42., but Burris sells for well over $300. Pentax has discontinued the Pioneer series. Might be able to find this Pioneer scope for around $200 elsewhere.
Can't vouch for them being great scopes for a 300 Win Mag. Chuckle, its around 24Lb recoil a challenge for most scope brands.