If the barrel is the older type that has the thinner taper prevalent on the older topper and combo's, and the stock is made for the newer versions of NEF's and H&R's there will be a sizeable gap between the barrel and the forend fitting from side to side. It will work but it won't look like it fits very well simply because it doesn't.
You can get a forend that fits from Numrich
www.e-gunparts.com that was made for the older barrels. I pieced together three older 30-30's like this and have a present day synthetic factory pistol grip buttstock, mated with an older black painted wood forend, and they look presentable, and fit very well.
I can post a pic if you would like, along with the ordering number from Numrich. You could also just match your present forend to synthetic stock.
