You might be better off selling it and buying the 204. Your gun is a large shank so you will need a large shank barrel. If you are going to keep it as a sporter you will have to get a custom barrel made. I think some of the target barrels are large shank so one of those would work but they are long (26") and heavy. You would also have to change your bolt head and if you want it to be a repeater, the mag box and follower.
I am sure others will chime in with further and possibly more accurate info.
charlie
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