When you can do that 8 or 10 times in a row you will be assured you have something until then it is just as likely and more probable you had three fliers that landed in the same place. I have a new rifle I just had built that will shoot a group like that about 3 out of 50 shots, the rest of the time it would make a better high lift jack handle.
WOW, your coming across pretty hard. I think you need to go back to the HIDE with your 10 shot groups where its a requirement.
On this forum, the goal is to put the first shot through the vitals at 1000 yards.
My load development that I reported on simply stated how I develope a load for a new rifle in my wildcat chamberings to get me started. I load up 1 grain at a time until I JUST feel the bolt lift increasing. Not until the bolt lift gets sticky. Then reduce the load by 2 grains. This will drop me off max by 1.5 to 2% with my wildcat capacities. Again, I was not talking about all chamberings.
THEN I TAKE THIS LOAD AND RIFLE OUT AT LONG RANGE and prove it to see if it shoots. 90% of the time that load will shoot to my 1/2 moa accuracy potential requirement and also will put first shot within 1/4 moa from point of aim at long range.
Again, I could care less about 5 shot or 10 shot 100 yard groups. Those mean nothing to me and with my wildcats, your simply wasting barrel life shooting strings that long. I tell my customers to limit shot strings to 3 shots to prevent barrel overheating. If your shooting a smaller rifle, no problem but with these chamberings, 10 shot strings are very hard on throats.
Again, maybe you need to tone it back a bit, your coming off like an ***.
I would put my loads and rifles up against anyones when used in the field in field shooting positions any day of the week. There are many ways to skin a cat and if you do not realize that your simply showing your lack of experience and humility.