[AvianSecurityServicesLLC]

Could it just be Operator error? <G>
wPm

Possibly. Can you elaborate based on my description? I'm shooting from a benchrest with 1/2" groups at 10 ft. I've remounted the rail and reflex sight 3 times AND used a laser boresighter. I'm not sure if you're trying to help or just trolling

Thanks, Mishtub! I didn't think of that until after I got some rest. I'll try to locate another firearm with a picatinny rail on top and install the Burris Fastfire III onto it.

I'll update once I kick the can further down the road.

 

[AvianSecurityServicesLLC]

Thank you for the kind offer, but it has been resolved. The Fastfire III was the culprit. I used a Savage Arms rifle with a zeroed in riflescope, put it in a benchvise, marked point-of-impact based on the riflescope AND laser boresight. Then, took off the riflescope and mounted the Fastfire III. It was off by exactly the same as it was on my 22/45. Maxing out the windage and elevation only gets me about half way Hopefully, Burris will make it right.

 

[AvianSecurityServicesLLC]

I know you said you have it figured out but I had the exact same problem but I then realized that the bolt that goes across the bottom of the fast fire mount wasn't dropping all the way into the slot in my rail so acouple seconds of dremel work to my rail and I put my Fastfire back on and stuck the bore sight back in the barrel and bingo couple turns of adjustment and everything lined up just fine

Thanks, DonReed!! I'll try some dental impression paper and see if mine is the same. But, 25+ MOA is a LOT of room to make up for. And, to be honest, after spending over $200 on a 1 oz piece of metal and glass, I expect it to not require modification . Plus, it would automatically void my warranty. I contacted Burris and they claimed that they've NEVER had this issue before After talking to a technician and a manager, I quickly realized that Burris is NOT the company I want to do business with. Fortunately, they were in a one-party notification state so the conversation will certainly go in the review video.

As for Ruger, they claim to be dumbfounded about the (recalled) pre-2006 hammer pivot pin in my post-2011 22/45 that caused my sear spring issues

At some point, "Made in the USA" becomes a liability. I think I've crossed that threshold.

 

[AvianSecurityServicesLLC]

Well, this issue has become quite common. It's not exactly a "defect", but it is quite inept of Burris not to at least inform their customers that they may need to alter the mount to get it to fit some Picatinny/Weaver rails. Well, 4 months and a bit of filing later, I'm excited to finally take my 22/45 "avec Optics" out for a plinking session tomorrow.

Here is a link to just one of many discussions about modifying the mount.

burris fast fire on M&P 22

Eventually, Burris realized there was an issue...about 2 months AFTER I directly informed them.

Burris Fastfire III - 8moa - BIG DISAPPOINTMENT.... now not so much!

At the bottom, notice that "BurrisOptics" states:

"Hmmmm this is good to know. I wasn't aware they weren't fitting on some weaver mounts. I'll pass this on and see if we can get a fix for this. Not sure what can be done but it's worth looking into."

Anyway, I just wanted to let everyone know what the problem was and how to solve it.

Problem: Burris Fastfire III Picatinny Mounts don't fit all types of Picatinny/Weaver rails.

Solution: IF your Fastfire III doesn't sight in perfectly, take off the mount and file down the high ridge along the "cross screw". With that high point gone, the Fastfire III can sit completely on the top of the rail without see-sawing.

 

[AvianSecurityServicesLLC]

That didn't take long to be threatened...post removed.