shred

When there's a case in both, or just one of them. all the rest of the stations open? What dies?

The "spin" is to make sure you aren't plunking into the rifling leade and really are hitting the chamber mouth. It's not uncommon for CIP-cut chambers to need long-bearing-surface bullets like truncated cones and HAPs to be loaded down around 1.05"

2nd plate. Who knows what footprint the hotness dot in 2 years will have. Some plate cuts (DPO and some others IIRC) will also mount a Deltapoint Pro footprint directly if you use insert pins..

clearly you must now set the combination to 1-2-3 4-5-6 in honor of Spaceballs.

I like the round window of the SRO, and they seem to last the longest overall on a slide, but the upfront cost is huge.

The cheap row-of-digits type you can sometimes pull up on the shackle while turning one digit wheel until you feel it drop into the detent. Repeat for the remaining dials.

There's minimal difference if the blowback weight is not too light that it opens early. I built a bolt-action 9x19 on a .22 TCM action and didn't see any real difference 16" to 16" vs blowback with the same ammo. After that I chopped the barrel to 5" and put 11" of integral suppressor on the front. That dropped velocity to the same as my 5" pistols, but it's stupid quiet with subsonics.

IPSC (where they still shoot a manly 170PF in Standard) has always believed that "freestyle starts after the beep". USPSA allows more latitude.

Normally that's the powder die funnel causing the hitch, but if you say it happens without a case there? If you just run one case around the whole shellplate, where does it have a problem?

That's how it was until USPSA got in on the act. With impact stop plates that Piru had it was how it worked-- shots after the stop plate were meaningless. But in the interests of easy, nobody uses impact plates anymore and backing up the timer was deemed too complicated.

I highly doubt you'll get a 9mm up to 3000 fps with a major load. Too much volume in the barrel for the case. It's pretty common as @zzt found out for minor loads to make (pistol) major PF in a longer barrel.

More than that, but not a ton more. It's difficult to over-crimp on a jacketed bullet. If you do it'll be obvious. OTOH It's easy to under-crimp and have a variety of issues from chambering problems & setback to gauging problems. Grab some premium factory ammo and take a look at how it's crimped with some magnifiers and copy that. If you like measuring, go with bullet diameter + 2x brass wall thickness, maybe a few thou under. Also, take one of your newly loaded rounds, measure it, and push it into the side of your bench bullet-first with two thumbs pushing hard on the primer end, measure again. If it got shorter, you've got problems.

You can also get knock from the primer slide not sliding all the way and from the shellplate not completely indexing, both requiring the alignment pins to pull them the last little bit. Is it on the downstroke or upstroke?

Probably selective-laser-sintered grip, so there's a lot of plastic powder involved. I wouldn't be too surprised if some comes off at first, although if the laser settings were wrong it could be disintegrating.

Yeah, zero gap is good, a tiny gap when viewed at 10x is usually ok. Easiest is to look at some major brand factory ammo and compare.

IME, most of them are made by whatever local welder makes the regular target stands and walls and whatnot. The MGM ones I've seen are adjustable but nothing else really special about them. I've also seen the low-rent way of just jacking a regular target stand up on a cinderblock.

I use a 10x loupe and look at the space between bullet and brass. If there's more than a minute gap there, add more crimp.

It's real fun when you're shooting a 9x25 Dillon and a media chunk gets in the chamber shoulder so rounds won't quiiite chamber.

Eh, I shoot SC until it cracks. Rare to have one get larger anywhere but the rim which gets pounded a bit over time. 1.245" is my target OAL with a JHP.

IPSC thinks Texas Stars are stilly too, btw. Still hanging on in USPSA for Level 1 only, although they used to be a thing at Nationals.

The only benefit to shooting a 9 open gun is brass availability. Everything else a SC will do as well or better. You can decide if that's 'worth it' for you. These days I do a lot of practice shooting with 9s and switch to the SCs before major matches.

A new shooter should use Doubles Drill as a Grip and Vision drill first and foremost. Improving those will improve scores. It's not until further along the learning curve that that working through how far out you can do predictive shooting is a big time saver. Mix in some Accelerator drills so you aren't just blapping away at one target at the same distance.

Newer DPPs seem to be a lot more robust than the old ones.

The trick people often miss about Doubles is you need to call both shots in the pair, even though you shoot the second shot without taking the time to confirm the sights.

Yeah, N320 was one of the gold standards. Some people (BE included) played around with Clays but it was very twitchy and unless loaded long could easily blow cases.