I'd go with the 7625, but PB is a close second. Either will work fine if the rest of your components match up with reliable data. I use a lot of Unique, Universal Clays, or Herco for the 1250 fps 1 1/8 oz loads. 7625 and PB just seem like an extravagance, since the cost is up there. I used a lot of PB and other IMR powders over the years, but I don't use much since the prices have skyrocketed. I still have a good supply of some, but when they get used up, I won't replace them at the current price differences. I have probably used more Unique powder than any of the others mentioned. It's reliable, consistent, available, and less expensive. A big plus for me is it will work in a lot of my handgun loads.
I prefer Solo 1250 for my Caps load over any other, but it has apparently been discontinued. I have used Univ Clays and Unique in the past, but have looked long and hard at Herco. What do you think of it?
I use 7625 and really like it. I like it enough to pay the price but when it somes to shooting or eating I dont worry about cost. PB is a close second but will not work as well for the bigger loads. 7625 works well for me in 1 3/8 oz or 1 1/4 ox loads for the games. I had an old 12 lb can of PB when I first tried 7625 and never went back to it so I now have a very old can with 10lbs left. I will use it someday. 7625 rocks for me. However - Unique is a really good way to go for less money
I like Herco, but Unique is my go to for the 1250 fps loads. My main reason is that I can use Unique for a wide variety of handgun loads. I feel that the two powders are very similar and that Unique fits the velocity/pressure range I'm comfortable with a little better than Herco. It also seems to require a little less Unique than Herco to get the same velocity. A lot depends on what hulls and primers you intend to use. In the Federal Gold Medals, the difference between the two powders is more apparent. In the STS and Win AA hulls, it's a slightly different story. These powders really start to shine in the 1 1/4 ounce loads. Herco might have the pressure advantage there, as well as the ability to squeeze a few more fps at a lower pressure level. I'm not a fan of pushing mush past 10,000 PSI and these powders do very well in that regard.
I also use a lot of Green Dot, but not for 1 1/8 oz loads going too much over 1200 fps. 1250 is about the limit for Green Dot in most situations. I prefer to keep a little headroom available for unforseen varialbles. In that regard, Unique is my choice for the heavy lifting at 1250.
I did have some better results using Unique when I tested several loads for cold weather performance. The difference was not dramatic. One Herco load did not perform as I had expected. Simply selecting a load based on a different primer fixed the problem. My testing may not be that scientific, but it helps to weed out the poor cold weather loads before you are on the line or in the field.
Two other powders I have used with good results are Universal Clays and Winchester WSF. WSF is a bit on the slow side for 1 1/8 oz trap loads, but it works well enogh with careful load selection.
Solo 1250 seems to have been discontinued. I bought a few jugs of it last year and have not seen any since. It is/was a decent powder, but it was usually hard to find around here. It was a hit and miss thing when you needed powder. Unique is usually easy to find, since a lot of people use it for many applications.
1 1/8oz.. 1250 FPS.. Remington hull.. Winchester primer DR Versalite wad..24.5 grains of Unique.. Flawless Feels very much like a Nitro 27.. My coach likes them alot too.. On the pattern board.. they are as good.. or better than anything else I've tried..
I use a very similar load. The best part of the load is the Unique powder and the Versalite wad. I use the CCI209M in one of the loads I use for winter shoots. The Versalite Wads seem to work well for me in many situations, but my preference may just be that I started using them sometime before/around when they were made/sold by Pacific. I don't remember the name of the original manufacturer, but I've used them through Hornady and now into Downrange's tenure as the manufacturer. They have been as good as any other wad I've used. The only issue is that the over powder wad isn't really re-designed for the New Win AA hulls.
PB for 1oz loads, works great, shoots soft, and burns clean. To me its worth the expense. Up until now I've purchased my Hcap loads, but will be working up a reload soon, I do not intend to use PB...maybe 700X.