800 rounds of Longshot:
100 at an indoor range with a friend. 165 in my first USPSA Match. 35 sighting in my SP-01. 100 in outdoor practice at Southern Utah Practical Shooting Range.
Thoughts from the indoor range. Loud and much hotter than 700x.
Thoughts from first match, used the magnum primers and was three grains below max load for 124 gr bullets. The recoil definitely has some feel to it. I was only surprised by it in my first stage when I didn't grip hard enough (I have those super aggressive CZ Custom thin aluminum grips, wonderful as long as you don't loosen your grip so they can move/grate your hand). I was focused on seeing my sights on targets and thus didn't notice anything further. Accuracy is not a problem. While I wasn't testing from a rest, as long as I did my part I hit exactly where I was aiming. No tumbling or inconsistencies from the powder in groups.
Range practice with the SP-01. Same load I used in my match, just 2 grains below max load. I have a 14lb recoil spring from CGW in this pistol, and the brass was flying about 8 to 10 feet away. While I have learned to focus on things other than recoil as I shoot the recoil isn't an issue for me anymore, but I still realize this load has more of it than I've felt from any other 9mm rounds. I had 30 rounds of 700x again. Loaded 1 grain below max so if I get chronographed I'll meet requirements for USPSA. The brass flew 4 feet or so away from my position. There was really no recoil from the 700x. The stuff is a dirty powder, no way around it....
Since I went back to 700x here's a few things I noticed while reloading. First, it meters less accurately. Not the end of the world since my powder drop still stays within +-0.1 grains and is right on 90% of the time. For my use I'll take it, but bullseye shooters would probably want more consistent drops. Second, it does bind up in my drop here and there. Like a flake gets stuck then crunched. It's not pleasant but doesn't cause any issues. For how cheap it is and how many rounds I get per keg and how soft the recoil is this stuff is pretty good. Sure I would love a powder that's cleaner and measures better. But will I get 15,000+ rounds out of an 8lb keg with 115gr bullets? And I can find it locally on sale for $159... It definitely fills a role.
Since I'm writing in more of a rolling thoughts approach. I just remembered something. I did notice something new with the Longshot when I was down south at the range this week. About 1/3 of the side, and half way down the outside of the brass was very dirty, almost like it was burned. I didn't see that when I shot these rounds through my 75 Compact at my first match, just this time around in my SP-01. I did switch to a Hornady die for sizing, but that was impacting the brass in both the match and range practice. This wasn't happening to the brass from the 700x rounds, which also had been sized in the Hornady die. Any thoughts?
Anyways, hope these help a little and please post thoughts, comments, questions, and so forth.