Larger than MOA groups. What would you check first?

[Gun Man Dan]

I do have the Hornady pilot set to measure neck thickness with their concentricity gauge.

 

[DShortt]

I'd really appreciate it if you'll post some results once your scope returns and you've test fired to establish a baseline.

As has been mentioned repeatedly, gotta start somewhere and change only 1 thing at a time.

 

[Webster]

I'd really appreciate it if you'll post some results once your scope returns and you've test fired to establish a baseline.

As has been mentioned repeatedly, gotta start somewhere and change only 1 thing at a time.

183 replies on how to fix it and he hasn't got the damaged scope back yet.

 

[Gun Man Dan]

First target 1 MOA with vertical dispersion. Looks like it didn’t like that powder charge, from what I’ve read anyway. Will post more later. I’ve got a string of charges to test so we’ll see. I’ll take 3 in one hole though. That’s cool with me for now.

 

[M-61]

First target 1 MOA with vertical dispersion. Looks like it didn’t like that powder charge, from what I’ve read anyway. Will post more later. I’ve got a string of charges to test so we’ll see. I’ll take 3 in one hole though. That’s cool with me for now.

Is this with replaced scope?
This started out with minimal information and now its almost become too confusing.

 

[Gun Man Dan]

Is this with replaced scope?
This started out with minimal information and now its almost become too confusing.

This is with the scope back from repair. Attached is a powder charge tier I just shot. It’s crazy how different they all are.

For reference the ten ring is 1”.

 

[M-61]

This is with the scope back from repair. Attached is a powder charge tier I just shot. It’s crazy how different they all are.

For reference the ten ring is 1”.

Crazy was your post # 60 target
This looks like the scope was the problem
Now you’re facing getting groups smaller the same as everyone.

 

[Kracken McGraw]

4th and 5th target is looking good.

 

[6MMsteve]

This is with the scope back from repair. Attached is a powder charge tier I just shot. It’s crazy how different they all are.

For reference the ten ring is 1”.

good I'm glad it was just the scope...happy days

 

[Gun Man Dan]

good I'm glad it was just the scope...happy days

I had some groups open way up after this, but they were heavier bullets. Completely different load and the barrel was on the very warm side. I was waiting for it to cool between groups. They said the didn’t do anything to the scope, but after the range today I really question that.

 

[Coyotefurharvester]

So far then apples to oranges. Far as the scope/new barrel issues.

 

[boltfluter]

This is with the scope back from repair. Attached is a powder charge tier I just shot. It’s crazy how different they all are.

For reference the ten ring is 1”.

As we suspected, the scope was the problem. End of story. Work on your loads and carry on. Shoot straight!
Paul

 

[Webster]

I had some groups open way up after this, but they were heavier bullets. Completely different load and the barrel was on the very warm side. I was waiting for it to cool between groups. They said the didn’t do anything to the scope, but after the range today I really question that.

Try a Berger bullet.

 

[M14AMU]

Check overall case length and trim as necessary, try Berger bullets, run a mandrel down into a full-length sized case that's .002" smaller than the bullet diameter, check where the bullet ogive is in relation to the lands, try one of these at a time! When all else fails let someone of known ability shoot your rifle!

 

[ISS]

I would strongly suggest screw(s) holding the bases are loose.

ISS

 

[Gun Man Dan]

I would strongly suggest screw(s) holding the bases are loose.

ISS

Those have been torqued down before I got the scope back just to make sure.

 

[6.5 forever]

Is the chronograph a must just to compare velocities? I’m still confused how that info would direct me to how to make my loads better.

Absolutely. Just do it and stop be confused. Lol

 

[Gun Man Dan]

My wife’s 5 shot group 100 yards. She’s got it nailed down. I don’t.

 

[dellet]

My wife’s 5 shot group 100 yards. She’s got it nailed down. I don’t.

I think you found your problem!

 

[Kracken McGraw]

My wife’s 5 shot group 100 yards. She’s got it nailed down. I don’t.

Easy enough, just take her with you to do the shooting!