Wow, very in depth and well presented! Thank you for the great read At a glance I would say you have a great node at 56-57 grains of R26 behind the 156gr bullet. Terminal performance appears devastating. Further testing is pretty much a question of what you are after I feel you could spend alot of time, money, and barrel life looking for that one hole group or you could do further shooting with your favorite load from this batch to really dial in all your data for distances, wind, and temperature sensitivity (which may be the one factor H-1000 would help??). Bottom line you have a great rifle and load that will accurately take game at extended ranges
Thank you sir, appreciate the response and input. I definitely agree that you can starting going down the rabbit hole really quick when it comes to chasing that one ragged hole (learned that lesson on my 300WM). My goal is/was to verify the guns potential as well as try to hit that 1/2" or better mark as quickly as possible, which I think I have gotten pretty darn close. As far as my plan moving forward you have hit the nail on the head. I'm going to take my 57gr 156 load and verify results with once fired brass then, as long as all goes well, start extending my ranges and collecting data for a range card.
On a side note, at some point I plan to test the H-1000. In fact I looked last week at trying to pick some up but haven't been able to locate any due to the current market. R-26 has been pretty consistent for me though, but I haven't done any real testing with varying temperature swings to really see how it acts. being in Texas though it shouldn't be that hard to verify since we've been known to have all 4 seasons in one day.
thanks again for your comments.