Originally Posted By: varminter .223So when it nukes it can move a pixel or two.....what if it moves to a pixel or set of pixels that it is on when the scope makes big moves when adjusting????I moved this to your thread as 204 requested his thread not be hijacked by other questions.
I am not sure what you by what if it moves to a pixel or set of pixels it is when the scope makes big moves, please clarify.
If you are referring to trying to move the SY a small adjustment (under digital zoom) and it makes a larger move, I have mentioned previously that I have heard nothing official from Bering. I have had a few people report they believe it might be happening. For those people, when I suggest they try it at 1x (.54"), it seems they have no more issues. If this is a problem with the SY, Bering will either need to address or go back to what they did with the SH, and only allow 1x adjustments.
As far as the NUC causing potential shifts or minor changes to zero, I am not a thermal engineer. From everything I have read as well as been told by thermal company representatives, they have to. We can go back to what many of us learned who went through the Pulsar Trail issues, the software was not correctly adjusting to temp changes. This is part of what happens in the NUC process.
When I test thermals, one of the two things I test in regards to NUC are:
1) Changes to POI on NUC
2) Temperature POI Impact
Changes to POI on NUC: I shoot a group, and NUC the scope, and shoot another group, I then NUC the scope two more times in a row, and shoot a group. I would consider anything under 1" to be very acceptable in this test. I have seen thermals shift way more than this. The scope is doing a lot of things when you NUC, so you want to make sure when a scope NUCs, your accuracy isn't impacted in a major way.
Temperature POI Impact: When I test a thermal for temperature changes, I shoot a group, and then wrap a flexible icepack around the scope for 15 minutes and shoot another group. This is a very difficult test on a thermal. Many thermal manufacturers would say this isn't a fair test. However, I want to be as sure as possible temp won't cause changes.
Think about what we do as coyote hunters. Many of us have the guns in a heated truck, and then go out in subzero temps. We expect the thermals to adjust properly with these huge temperature swings. This is why I run this test. I believe Pulsar still states in their manuals they recommend zeroing the gun in the same temp as you plan to hunt. They also warn to keep it in that temp for a period of time before zeroing or hunting. This would be tough to do for most coyote hunters. I bring this up to illustrate how important temp is to a thermal scope and how critical it is the NUC process adjusts with temperature changes to keep your accuracy as precise as possible.
With each of these tests, if the scope is functioning as I expect, there should be minimal changes to groups. If something moves less than an 1" with any of these tests, I consider that excellent.
Originally Posted By: varminter .223I've also heard thermions aren't having a shift issue.
It's hard to wade through all the internet bs Not sure if you are implying, I am providing internet BS or not. I would hope people on this forum would know by now that I tell it like it is (good and bad) to the best of my ability. I have asked Pulsar to provide a Thermion for me to test and then I could at least state if that unit passed my NUC testing. I can tell you the SY passed my test. Is it possible there are other SYs that wouldn't pass my test, absolutely as there could be Trijicons, Nvisions, Pulsars, etc. Just because a person is having an issue with a thermal, does not mean everyone will or that they are not experiencing it because they haven't tested it enough.
For people who are having issues with their thermals, contact the dealer you bought it from. See if they have any suggestions as the many suggestions, I have tried to provide on this forum. If there is an issue that can't be easily remedied, then the manufacturer may need to get involved. If you don't have a dealer, then go directly to the manufacturer.