I have several guns made on M98 Mauser actions. That was widely done in years past when gunsmithing fees were smaller and you could get GREAT firearms this way.
It is estimated that there were >100 MILLION M98's made in untold numbers of factories in numerous countries. Most were well made. The M98's by FN were top notch. Fit and finish were really good (as a usual rule), metallergy was good and therefore the actions were very strong and reliable.
IF the conversion was well and safely done, my guess is that you have a very good and servicable rifle. Those actions were converted to many calibers including 300 Win Mag, 458 Win mag, etc, so they were strong and tough.
If care was done in the conversion, you may also have a superbly accurate gun. You might have a 'smith to give it the once over to make sure it was well done and is safe. If so, shoot the heck out of it and see how it does.
Mine are done in .270, 25-06 and 35 Whelen. I like them a lot. Hope you like yours.