Micro Roni POI shift when swtiching shoulder?!

[HawkWei]

Hi guys I have a gen4 Micro Roni carbine kit, I used my G19X in it for IPSC PCC.

The accuracy is pretty good and I can get 2 inch group most of the time at 25 meters using right shoulder.

However as sson as I switch the shoulder, POI immdiatly changes and I can not figure out why. At 5 meters the POI is one inch to the left. I have tried other PCCs and the POI shift is only happening on micro roni kit. Any one experience the similiar issue or maybe some quick solution? Let me know, thanks!

 

[sidester]

Have you given the gun to another shooter to confirm the shifting?

 

[HawkWei]

Have you given the gun to another shooter to confirm the shifting?

Yes I did

 

[easyrider604]

Yes I did

Perhaps the other shooter has the same problem as you.

Change in POI could be caused by tilting the gun very slightly when shooting from one shoulder. Changing shoulder, you may be tilting it the other way.

Or you could be perfectly level from one shoulder then tilt the gun from the other shoulder.

Most people are not perfectly ambidextrous or physiologically symmetrical left to right.

I’m right handed and can normally keep my pistol reasonably vertical shooting strong hand only. But when I shift to weak hand, I have to slant the pistol slightly clockwise about 10 degrees. Not even close to gangsta style, but that angle still throws off POI.

 

[Juster]

Are you using an optic?

 

[sidester]

Yes I did

SO I would guess ... the frame is flexing... while shooting lefty???...
I do not see another reason.
At last could it be the frame heating up & flexing more.
Have you tried to shoot a group lefty with the setup dead cold?

 

[Scotty454]

I would guess there's about a 99.9% chance that your problems are technique related. Likely something you haven't noticed you're doing. Can't really say what though.

 

[Canuck44]

When you switch shoulders you also switch trigger fingers I would look there first. I would bet money you have not spent much time shooting with your weak side trigger finger, I know I don't nearly spend the time shooting from my weak side and when I do it is a struggle. The struggle for me is to get the same grip on the gun and the same trigger pull I get with my strong side. I am not sure the angle of the gun has much to do with your woes.

Take Care

Bob
ps All this advice is from afar. See if you can find an instructor and let him find a fix.

 

[HawkWei]

Are you using an optic?

yes! Aimpoint zeroed at 25

 

[HawkWei]

I would guess there's about a 99.9% chance that your problems are technique related. Likely something you haven't noticed you're doing. Can't really say what though.

I will bring my AR next time on range trip, so that I can compare POI shift on both platform

 

[Juster]

Aimpoint parallax can be about 0.7" at 5 yards:

 

[sidester]

Bump!