I have 200 rounds through the three week old rifle and at least a dozen trips to the range. I have tested H1000 and N565 with many variables.I always look for consistency. Shoot both powders side by side over as many days as possible and see which one holds up better. One or two range trips doesnt mean much.
Both have very good results and both are very comparable. I ended up with the N565 as it had a slightly better ES/SD over H1000. Also, the velocity was slightly higher with less powder. Good advice though, a couple trips would be difficult to isolate all the variables.