Hey everyone, thought i would share some in formation i found in doing some research. I am changing my 12 LRPV from .223 to 6.5CM. As the helpful people here pointed out his comes with some bolt changes. i was looking for the all the parts that were different and came up with the below list (these are for stainless parts, not blued) (and a LH port). hope this helps someone else in my shoes down the line

Disclaimer: verify with savage before taking my word on the part numbers!
Name Diagram Number Part Number .223 Part Number Std
Firing Pin Assembly 11 > 107348
Cocking Piece 11B > 107345
Cocking Piece Lock Washer 11C > 103494
Main Spring 11D > 104279
Washer Firing Pin Stop Nut 11E > 100303
Firing Pin Stop Nut 11F > 107344
Firing Pin Short Magnum 11G > 107343
Bolt Assembly 12 108392 108393
Cocking Piece Pin 12A > 107346
Rear Baffle 12B > 106164
Target Bolt Handle 12C > 108189
Cocking Piece Sleeve 12D > 107347
Bolt Body 12G > 107480
Bolt Retaining Pin 12H > 103978
Front Baffle Washer 12I > 100293
Front Baffle 12J 103321 103322
Bolt Head, LH, Ground 12K 107481 107482
Extractor 12L 102278 100139
Extractor Spring 12M > 100257
Extractor Ball 12N > 100214
Ejector 12O > 100129
Ejector Spring 12P 103611 100131
Ejector Retaining pin 12Q > 100130
Bolt Assembly Screw S.S. 12S > 102522

I did not see this posted anywhere else, sorry if this has already been posted.