Ok back to the range this evening. I didn't have time to stretch it out but I did validate that I was still on at 100 yards.
Also shot 3 different type of ammo, ballistic silver tip shot 2 moa, Barnes ttsx shot 2 moa however the accubond shot 0.5 moa, I'll attach a pic below of one of my 3 shot groups with the accubond.
Next trip will be going back out to long range and trying to figure out what the heck is going wrong.
Ignore the group up high, that was Barnes.
This post is epic really. I am surprised no one has told you to change underwear between shots. I could walk Stevie Wonder on to a 10" plate at 1K just by twisting his dreads while he was on the rifle.
Do post what happens on the re-test.
I have to say this though, from an accuracy standpoint, almost all you have done is failure. Let me explain, I would never even test a different powder in a barrel w/o cleaning, let alone a different bullet. Using different powders just upsets fouling patterns. Throwing in different bullets in pencil thin barrels just doesn't work, think of barrel whip, every different box of ammo you shoot is different, from the powder to the bullet. Your Barnes Titty yx may not strip copper till the end of the barrel but the Nos LRAB may start stripping 4" in, but yet you are going to fire all these in a barrel and expect results.
About me, I am a nobody really, I do not compete, I do not hunt, I just shoot a lot, minimum of 4K centerfire LR rounds a year. I have a high school education is all, but I pay attn to detail. I've been shooting LR for 10 yrs, many cases, 6's, 6.5's 7mm's, and a 338 snipetac, so 30 cal has never been in my wheelhouse. But I have also spotted for enough guys to know the Nosler long range accubond has a distinct cutoff point of viability. Not saying it is no longer accurate, but it's no longer viable predictability wise in a cacl app.
Over this coarse, I have shot heavy to lighter barrels, and let me say, heavy barrels are more forgiving. From heat, to fouling, which is compounded in rate of fire. Let's not start the cleaning debate here.
If you are going to shoot your rifle today, you need to clean the barrel before hand, and not with Hoppes #16 benchrest, get a carbon dissolving solution like Boretech C4, then a copper remover like Montana Extreme copper killer. If either of these are not available, try Gunslick bore foam and a bronze brush, 3 passes in and out will reveal a disgusting residue on your cleaning rod that tells a story.
Right now, you have a goal to achieve, shooting a paper setup at any distance serves no purpose unless you can run down or drive down after every 2-3 shots. Dust signature behind an obscured target is irrelevant, unless you have glass to pinpoint impact, a high right impact may look centered up from your vantage point with wind direction.
What this boils down to, you need at some point turn the odds in your favor, from finding someone who is knowledgeable to accompany you, to just using common sense and not firing a thin barrel 20 times in 30 minutes and expect to hit.
It does not matter at this point whether some turd at cabela's mounted your scope canted to the left at 4 degrees, you said yourself that your impacts at 650 boxed the rock, from 6" off to 1 foot, in all directions. So basically you were shooting 8 moa at 650, you need to decipher if the rifle is capable of this distance, or if the ammo used is capable, or unfortunately, if you are. Basically at this point, you need some luck, which in turn into a self directed success.
Play your cards right, do not overthink think this, it is a simple obstacle in a meaningless faction of your overall life.
Good luck !! !!
