Welcome to the forum-- god speed and good luck with the cancer treatments
Depends on who you sell it to.
I had a buddy sell his to cabelas/bass pro-- he got $600, you can probably get more on the private sector, or sell it at auction on gunbroker it might go for even more- but you'll have some fees.
If you sell it locally you won't have to ship it, or you could try putting it on consignment at a lgs.
Does it have the threadded/ radial port brake on it? I know some of the real early ones did not have a threaded barrel.
Once you get enough posts here, you can sell it in the "for sale" section.
If you were local, I'd consider it as ive always liked those in 300rum- but it's hard for me to trust brand new members with no feed back as there has been too many scammers on the net lately (not a dig on you, just on the net in general)
Start a new thread in the "new member" section-- get your post count up- get to know some of the guys on here- gain some good knowledge-- and then post it up for sale.
I know that sales have slowed lately, and prices are starting to drop a little. Several rum's have sat in the sale section for a while before they sold-- but its a nice rifle, you shouldn't have much trouble selling it if it's priced right.