Anyone have any insight into the M658? Just snagged one chambered in 7RM, looking to work up some loads, maybe spruce her up a bit. It does appear to have a different screw spacing than my newer Tikka. Stock options may be limited then.
The M658 was from back when Tikka used to make a long action (M658) and a short action (M558). They have the same quality as the Tikkas of today. They don't use the same action screw spacing, so you are correct that finding aftermarket stocks won't be as easy. There are some that make them, however.
I would shoot it in the current configuration before changing anything.