I'd try it again with brass all matched for volume and with case necks annealed, and like DrMike says, use larger sample sizes. Even if those were not factors in the results you see, it could be that the charge weight of that powder just isn't optimal for the primer and it's also possible the...
I was there once upon a time.
Then someone gave me a MEC shotshell press for 12 Gauge.
Now I have one for 20 Gauge as well.
Hope you're doing well, Bruce!
I once swore to myself that I'd never load for an AR15. That went out the window when I started hunting hogs with an AR about 15 years ago.
Then I swore I'd never load 5.56 55-grain FMJs. That went out the window when The Zero started talking about banning some ammo, or something along those...
Never mind...I don't know why I didn't just look it up myself in the first place. It looks like the Maven is a bit stingy with eye relief @ about 3 inches. You get 4 inches with the Tract (and an etched reticle, to boot) so if I do end up needing another 2-10x, it's more likely to be a Tract...
I just mounted a Toric UHD 2-10x42 with T-Plex reticle (I prefer the simplest of reticles) on one of my rifles last week. All I have done with it is a sight in at 200, but I can tell already it is a mighty fine scope. I can see ending up with one or two more in the not-too-distant future.
Joe..."cold" being a relative term, where do you shoot and hunt, and what is "cold" to you? I ask because I have a few pounds of 7828 for my .264, but that rifle will be going down the road shortly and I have not made a plan to continue using that powder.
I'm using Fiocchi small pistol in 9mm loads. Based on that limited experience I wouldn't hesitate to try their other primers as well.
I've also been using Ginex large pistol for 10mm. They're fine and I wouldn't balk at using Ginex rifle primers either.
Re16 is a great powder. I use it in .30-06 and .260 Rem and to be honest, I think it may be a little better than H4350 in those cartridges. I just wish availability was better...and I'd love to see Re23 on the shelves. I never even got to try it before it disappeared.
It's good to see some of the powders that got rare reappearing on the shelves. I even managed to snag some H1000 recently to bolster my supply (my .280 loves it with 174-grain bullets). I just have this nagging suspicion that we won't see a resupply of all these for another three or four years...
You must operate like I do, Bruce. I don't ever have to buy another component unless I just want to. There are some down sides to it, but the up sides RULE!