All I can help you with is #2 and #3, you can get bottom metal directly from Savage, they sent mine pretty quick.
If you need part #'s and a serial # let me know.
I'd also get a better recoil lug and maybe barrel nut and receiver wrench.
Jim at NSS is a top notch source for those.
I was shooting my 260 savage with parts I got from Jim today at over 1600 and doing decent with it.
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