Red Dot lost zero.

[tad1]

The gun was dirty vs super clean, the gun was held/rested differently while shooting.  The base/screws were a touch loose. Big temp difference from original sighting in. Variation between ammo of the same or different lots.  Choke tube is loose. Gun/ sight was bumped, jostled, vibrated.... 6" is not huge variance at 40 yards, I imagine the effective killing pattern is at least 20".  I would do what others recommend and shoot some birdshot again start at 20 yards move to 40 , then to tss and see what's up.  It seems a bit early to have Burris testing the site after you've shot only one shell at 40.... Yes, optics can fail, Dad just had a bad vortex riflescope replaced.  And I do agree with you, I hate to not feel confident in my equipment.  Keep us posted
    JT

[paboxcall]

My FF3 is mounted to the receiver, so when I disassemble to clean, I have a small Sharpie mark on the barrel lug that indexes with a small Sharpie dot on the tube. This way I know that barrel is torqued to the same amount each time I put it back together. Just eliminates another of those variables.

[Wigsplitter]

Always check the zero !! Every year!! Rifle or shotgun!! I can't understand why people don't do this every year other than maybe ammo cost BUT I'll gladly give $10 to know - gobblers are to hard to come by for me to throw a hope and a prayer at him!!

[RutnNStrutn]

I had the same thing happen on a Tru Glo green dot sight. It cost me one NC gobbler and almost a second one.
On the recommendation of a friend I swapped to Trijicon dual illumination RMR green dots, and haven't looked back. RMR stands for "rugged miniature reflex" and that's very fitting. In 8 years of using them on 2 scatterguns, they have NEVER lost their zero.

[joey46]

Sometimes you get what you pay for. If I ever change from my Romeo I'll go all the way.  Hate to put a $300 site on a $150 dollar gun but it's only money.

[ruination]

Missed two this year cause I botched the zero at the range...must've done reverse order.  So I feel your pain.

If there's really nothing off, rails is loose, sight secure, barrel seated properly and you fired in with tss...I'd send it back to Burris, they have a great warranty and will check it o would bet.

Sent from my SM-S931U using Tapatalk

[Ihuntoldschool]

Missed two this year cause I botched the zero at the range...must've done reverse order.  So I feel your pain.

Bummer.
They need to start marking those adjustment dials so you know which direction your POI is moving. 

Or maybe take a shot after you make your final adjustments?

[ruination]

Missed two this year cause I botched the zero at the range...must've done reverse order.  So I feel your pain.

Bummer.
They need to start marking those adjustment dials so you know which direction your POI is moving. 

Or maybe take a shot after you make your final adjustments?

Lesson learned.

To be fair, I was running on no sleep at the time and doing lots of stupid things.

[lunghit]

Going to start over and re-sight the gun in a couple of weeks. I ordered a Warbird FF3 protective mount that I'm adding to the gun first. Hope it was just a fluke thing but I will always take a shot before the season.

[strum]

Going to start over and re-sight the gun in a couple of weeks. I ordered a Warbird FF3 protective mount that I'm adding to the gun first. Hope it was just a fluke thing but I will always take a shot before the season.

 Im confused here.  Im not trying to be mean but you shot a bird and found a low hit but you have not checked your gun since?  I know TSS is expensive but I think something of off ill shoot that thing right away to be sure.
 You may not even be off .. Just maybe shot low.  we all do it.

[lunghit]

Going to start over and re-sight the gun in a couple of weeks. I ordered a Warbird FF3 protective mount that I'm adding to the gun first. Hope it was just a fluke thing but I will always take a shot before the season.

 Im confused here.  Im not trying to be mean but you shot a bird and found a low hit but you have not checked your gun since?  I know TSS is expensive but I think something of off ill shoot that thing right away to be sure.
 You may not even be off .. Just maybe shot low.  we all do it.

After I shot the bird and noticed lots of pellets in the breast meat, I took a shot at 40 and the pattern was really low. Before I shoot more TSS I was asking for advice.

[lunghit]

Also the gun was in a Lead Slead when I originally sighted and the test shot when I had the low pattern. Clean barrel and everything was verified with my rangefinder. I looked at my notes and when I sighted in I had 309 and 349 in the 10" at 40. When I shot the other day I'm lucky if I had 50 hits in the 10.

[strum]

Also the gun was in a Lead Slead when I originally sighted and the test shot when I had the low pattern. Clean barrel and everything was verified with my rangefinder. I looked at my notes and when I sighted in I had 309 and 349 in the 10" at 40. When I shot the other day I'm lucky if I had 50 hits in the 10.

Ok so you did shoot it afterward.  thats good. at least you know it really was low.  I always shoot mine at the beginning of the season regardless if it was on the past year. I agree with what others have said. get it back on .
i know that means more TSS but once your there shoot something cheaper and note. that way you have something to test when in doubt. could be a fluke or could mean a loose mount attachment , or bad optic.

[runngun]

Sometimes you get what you pay for. If I ever change from my Romeo I'll go all the way.  Hate to put a $300 site on a $150 dollar gun but it's only money.

Exactly my way of thinking. The way I see it (pun intended) what you looking through to AIM at said red white and blue HEAD? Hopefully it will be the last view you have of him ALIVE!!!

Sent from my SM-S908U using Tapatalk

[Ihuntoldschool]

When you have it dialed in again
take it out a few times on your ATV in the gun rack and let it vibrate good by traveling the same rough trails and roads you use when hunting.

Then shoot it.  You might identify your "problem"