Bergara HMR 6.5 Creedmoor Fliers?

Picked up an HMR a few months ago and have since shot 4 boxes of hornday Whitetail hunter and 1 box of Hornady SST. Both yielded great two shot groups (3/16"-1/2") but seeing some funny fliers.

Usually this is how it works:
Shot 1 and 2 are very good and close together. Usually wait 2-4 minutes between shot one and two. Then I shot 3 and 4. Shot 3 is after waiting about 5 min again and is typically close to the first two but opens the group from about 1/4" to about 3/4". Then shot 4 after waiting a few min again is about 1.5" away from the the others and shot 5 is the same result (about 1.5" away from the group) but about 3/4"-1" away from shot four. Then I'd let it cool down for15-20 min and shot 6 and 7 will usually be near eachother about 1/2". All shots get atleast 3 minutes between the follow up shot and I always make sure the barrel is cool when shorting. Have been shooting in weather that is about 50 degrees

I have yet to try any match ammo, but I don't think that'll help the fliers?

I'm also having extraction issues, when I pull the bolt back, the case contacts with a bur or sharp corner on the inside of the action and leaves a small grove in the casing. It's enough to stop the bolts monitor unless you apply some force. Are these casings ok to reload?

Is the gun fouling? Causing the poi to move? Is

I used copper fouling for the first 5 shots then again after 20 shots and haven't since. POI isn't changing, shots 1 and 2 and for the most part 3 are in the spot they should be

have you checked your barrel channel, action screws and base and ring screws? so if you go back out the next day does it do the exact same? is the poi back to the first shots from the day before?

Scope rings and vases were torqued down and locktite. Yes the next day it will be right back where it's suppose to be for the first few shots

The poi will be back to normal if I give it 20-30 min of cool down. Or maybe it's just the inconsistency of the Hornady you Whitetail ammo? Maybe I'll try some match ammo

YES this^^^^^^

Get some 140 match ammo

If the 140 match flies well and the hunting round doesn't fly well what would you recommend I do? I'm in need of a hunting round out to 600 maybe 700 yards

Use the match stuff. If you are worried about using a "match" bullet on game i wouldn't sweat it especially at that distance. I have taken a lot of game with match bullets, the amax or ELDM will do its job just fine. If you are concerned with it you could try this stuff...

https://www.midwayusa.com/product/1...nition-65-creedmoor-143-grain-eld-x-box-of-20

I would try the ELDM from Hornady. My HMR loves it. Will shoot sub MOA groups without letting the barrel cool. If it's still not grouping contact Bergara. I had to send my HMR back because it wasn't feeding correctly. They were great through the whole process.

In response to using match bullets on game:

Do the match bullets tend to expand less or more than a standard hunting round? Will the match bullets not expand at all when I'm shooting game out to 700 yards with approximately 1850fps-1900fps? Or will the bullet fragment on impact at say 200 yards when the bullets is moving at approximately 2500fps?

Are the shots stringing? Or is the group just spreading out unpredictably? Given that poi resets with a cool barrel, it seems like it's more a gun issue than bullet issue.

Seems like for hunting, as long as your cold bore is good, you should be where you need to be. Obviously calls for further investigation, but maybe once the season is over?

They aren't stringing, just spreading out unpredictably. Thing is something with the gun?

I could always sell it and get a ruger RPR or a savage stealth after the season?

I would still try the ammo. Some factory hunting loads are remarkably temp sensitive. If it won't shoot the match stuff then I would suggest sending the gun in. In the old days factory hunting ammo would be considered good if it shot 2 moa.