Jim, I have a converted Parker Hale Midland and it works very well. I have a used match barrel rechambered to 30 Gibbs and this rig will shoot 1/3 MOA or better using Hornady SST 165gr bullets. I feed from the mag usually as the Mauser type extractor doesn't like to push feed.
Not sure which model you have, if this is just a sporterised Mauser or commercial action. Either way, any quality gunsmith will be able to work on it since the install is the same as a Mauser.
Keep headspace as close to zero as possible. Ensure that the lugs have at least 60% contact on both sides - they should. Don't worry that the bolt handle wobbles during cycling. What matters is that the lock up is consistent and tight.
I would suggest you stick with cartridges based on the '06 case. Easier to work and then you have a repeater. Performance can be as high as the Short Magnums by using wildcats like the Gibbs and a longer barrel. The 6.5-06 reg is equal to the 6.5-284 with regards to performance and hunting accuracy. The improved versions are faster.
I am guessing that this action comes with a single stage "commerical" trigger. Adjust to the lightest, crisp, safe trigger you can. Mine is under 2lbs. If still military, I would look for a new trigger.