Double grouping????

[FOTIS]

2 groups consisting of 2 shots about 1/2" apart. Each group 2" away from each other.

1. Why and cause
2. What is fix?

 

[GeorgeS]

Come on, Fotis, you should know this from your own past experience.

1. Broken scope (erector);
2. Buy another scope. :lol:

George

 

[FOTIS]

Scope is a leupold 2.5x8 vx3 on a 340 bee

 

[ScreaminEagle]

Scope is a leupold 2.5x8 vx3 on a 340 bee

Buy another gun!

 

[GeorgeS]

You can break any scope. :lol:

How many Vari-X IIIs did you break on those .378s? :twisted:

Personally, I'm surprised. That is a tough scope; is the gun very light for caliber?

George

 

[salmonchaser]

For me it was vision, or more correctly vision deterioration. I started to struggle with the same phenomenon several years ago, and it happened almost over night. After checking rings and bases I sent the scope to luepold. Sent a note explaining what was going on. The went through the scope no charge and a delicately worded suggestion to get my eyes checked. Astigmatism was the culprit. I had not yet started wearing contacts but could.force the eye to focus. Problem was the eye was focusing on one edge of the crosshair and then the other. It is surprisingly difficult to pick up what's going on.
Try aiming to the right or left side of your target spot rather than centering the crosshair. I think an engineer would say hold the crosshair tangent to the target spot.
If you then shoot a good group your eye has simply started shifting from focusing on the right edge then the left edge of the cross hair. Time to go see the eye doctor.

 

[salmonchaser]

My scope was the VXIII 2.5 x 8 fyi, 8mm mag.

 

[longwinters]

I would wonder if you had changed the position of your rifle on the rest or changed your shoulder pressure.

Long

 

[hubcap]

Nope ,not a scope problem. Not a Fotis eyeball problem. It is obviously the wrong powder. Acually I have no clue other than the same thing happened to me a short while back. I was shooting groups like Fotis explained with 150 LRAB,s in my .270. I switched from H4831 to IMR 4831 and the problem vanished.

 

[Ridge_Runner]

seating depth 90% of the time
RR

 

[Bruce Mc]

A BIL had a model 70 featherweight in .257 Roberts that shot pretty darn good but it had some pressure on the forend. He had a smith pillar bed and free float the barrel. Afterward it would shoot two groups about an 1-1/2" apart. Took it back to the smith and upon closer inspection found that the bore was eccentric. With just a tad of pressure the barrel stayed consistent but when free floated it would not.

 

[FOTIS]

Scope is a leupold 2.5x8 vx3 on a 340 bee

Buy another gun!

Really?

 

[FOTIS]

You can break any scope. :lol:

How many Vari-X IIIs did you break on those .378s? :twisted:

Personally, I'm surprised. That is a tough scope; is the gun very light for caliber?

George

Stainless synthetic 340 Bee

 

[joelkdouglas]

I think you need a new rifle and a new scope.

Not sure what to do about your current rifle/scope combo. But you still need a new one!

 

[Dr. Vette]

Stainless synthetic 340 Bee

Synthetic stock flex? Inconsistent barrel pressure from the stock?

Parallax error?

OAL or powder load adjustment needed?

Those are the ones that come to mind for me.

 

[truck driver]

All that heavy recoil has finally caused your eyes to cross. :lol:

 

[cloverleaf]

Not enough experience to do anything but guess. Did the shots fall, one on the right, one to the left, third to the right fourth to the left? This is all assuming, knowing you, that everything is tight etc.If so my guess is parralax or other scope issue. If they landed 1,2 on the left and 3,4 on the right (or visa versa) then my guess would be the barrel is walking as it warms up. Also makes me wonder if the action is moving in the bedding? I HATE the variables., Good Luck.

 

[FOTIS]

1 and 2 left 3 and 4 right

 

[Oldtrader3]

I had to float my .257 Roberts to get one group. I was getting two groups a half inch apart before I floated and pillar bedded it.

Which stock is this one? I also had similar issues with my Mark V Fiber Mark. Same problem as the Roberts. The side support glass bedded tabs inside the barrel channel had shifted and the barrel was moving with each shot.

 

[skidmark]

cheek weld....
Let another known good shooter try it ?