Case gauges are essential in reloading if you wanna avoid problems with chambering the rounds properly, especially with such a high pressure pistol cartridge like the SIG. Make sure you get the crimp right to avoid setback. I made a few dummy rounds first and chambered them a few times and measured the set back til I got it where it needed to be.
"Do I reload to shoot more, or do I shoot to reload more?" 30-378 Weatherby, .300 RUM, 7mm Rem Mag, 6.5 Creedmoor, .223/5.56, .375 H&H, .40 S&W, 10mm, .357 SIG
Yes that is correct. Size the body with the 40 carbide, then set the shoulder with the SIG die. It keeps you from having to lube then clean the brass after sizing.
"Do I reload to shoot more, or do I shoot to reload more?" 30-378 Weatherby, .300 RUM, 7mm Rem Mag, 6.5 Creedmoor, .223/5.56, .375 H&H, .40 S&W, 10mm, .357 SIG
Any time. Good luck, and enjoy! The SIG is fun to shoot. Keep in mind, you may want to go with a slightly heavier recoil spring if you use full power loads. The XDm comes with an 18# spring from the factory which works well with factory loads and light plinking loads. But with full power .40 and .357 SIG loads, I ended up going up to a 20# and it smoothed it out a good bit. I have a 22# I will be trying soon to see if it makes it smoother or if it is too much.
"Do I reload to shoot more, or do I shoot to reload more?" 30-378 Weatherby, .300 RUM, 7mm Rem Mag, 6.5 Creedmoor, .223/5.56, .375 H&H, .40 S&W, 10mm, .357 SIG
Recoil springs are cheap, usually around $7-$8 a piece. If it is a Glock, most dealers carry springs for them, at least in my area. I'm not familiar with the Glock, but it should do just fine. If it was a .40 and the factory spring is still in great shape, you should be good to go. My factory spring was fine, but the heavier one smoothed out the snappiness of the full power loads that are running 1,480 fps - 1,500 fps.
"Do I reload to shoot more, or do I shoot to reload more?" 30-378 Weatherby, .300 RUM, 7mm Rem Mag, 6.5 Creedmoor, .223/5.56, .375 H&H, .40 S&W, 10mm, .357 SIG
The XTP & Gold Dots I push hard because I've been using them when checking hog traps to dispatch wild hogs as well as when I'm hunting if they come by close enough to pop them. So far they have done pretty good. I use Longshot to push them that fast. Power Pistol is slightly slower, but is more accurate... only about 30 fps slower on average. With the Xtreme, I have pushed them over 1,400 fps, but the accuracy was not good at all. They seem to like the 1,250 fps - 1,320 fps range.. Much past that and accuracy goes south. I use AA#9 on the Xtreme because it helps keep setback to a minimal and is pretty accurate. Keep in mind this is all from my particular set up, XDm .40 S&W 4.5" with a Storm Lake .357 SIG 4.6" conversion barrel.
"Do I reload to shoot more, or do I shoot to reload more?" 30-378 Weatherby, .300 RUM, 7mm Rem Mag, 6.5 Creedmoor, .223/5.56, .375 H&H, .40 S&W, 10mm, .357 SIG