Many upgrades for the Rem700 SA fit the Rem700ML. Stocks, triggers, scope bases ect ect. The 209 system sorta sucks but Badger Ridge offers one made by a guy who goes by Hunter on Dougs board. That 209 conversion is excellent and works with Blackhorn209 powder. I would shoot 54x50s if i got one. There are a bunch of good 50cal bullets for those sabots. A couple are dirt cheap at Midway and Grafs. Try the Harvester 54x45s if you want a very strong sabot for 45s. If your bore is a bit loose you may be able to shoot some 458s instead of 452. Otherwise it loads a little easier than the MMP 54x45 sabots when you use a 452 bullet.
If the gun is in very nice shape its worth trying.
