deerslayer

This gun makes absolutely no sense. Until now, “Shadow” meant no firing pin safety and by default, a better trigger. So now CZ makes a Shadow that isn’t a Shadow. The firing pin safety is not really necessary unless you carry hammer down instead of half cock, which only an idiot would do. BUT if you have to have a firing pin safety and want a decocker, the P-01 is less than half the price of this gimmick.

Did other manufacturers recently change their manuals?

Most of these I get, but a couple are headscratchers - 17L gen 5 and 49 just came out 34 is still common in the competitive world

Oil breaks down the older it gets and loses its ability to lubricate. It may even break down and begin to turn to sludge. Below are a few examples of what old oil can do to an engine. A 3000 mile interval was the standard in the old days, but newer oils can go longer (but I personally don't trust any of them past 5k or so). Guys with lab coats who never work on cars claim that their products can now protect engines for 10k or even 20k miles, but reality is that many newer cars are significantly burning oil after 70k or 80k miles and dealers shrug their shoulders when customer complain and reply that this is normal and acceptable. This didn't used to be the case. Some theorize that manufacturers planned this so they can sell new cars or expensive repair jobs. That sounds a little far-fetched; I think a more likely explanation is that the Marketing department started listening to the lab coat geeks and decided they could claim their cars now require less maintenance. If you sell your car after 50k miles, I guess it's not your concern, but if you plan to keep it a long time, oil changes are cheap insurance.

I get it, but his experiment created more questions than it answered. The repeated failure of the firing pin safety especially can’t be ignored. Either it works or it doesn’t, and his didn’t. SIG needs to explain why.

Also the MOS guns limit your choices for aftermarket rear sights, unless you are ok with the sight hanging over the back of the slide.

Been doing that since it was new? If anything will hold up to neglect, it’s an iron block Toyota four cylinder, but oil changes are cheap insurance. The engineers may tap their heels together three times before wishing their new whizbang formula will last 15k or whatever the latest claim is, but what mechanics are finding five years down the road is a lot more relevant.

This. 10k oil change intervals are more common and surprise surprise, so is unprecedented oil consumption across brands.

Right. My wife drives a RAV4 and says my 4Runner is a big SUV. A friend has a 2001 crew cab long bed F250 he calls "Hank the Tank." I think she needs to take Hank for a spin to get some perspective.

"Can't be duplicated from gun to gun" implies faulty parts or tolerances, as opposed to faulty design. It is highly concerning that the striker safety is not always catching the striker in the video Ken posted. Back in the 90s, Glock was chastised as being unsafe, but Glock simply produced a mechanically sound gun whose design exacerbated lousy gun handling habits. I don't think the 320 issues can be compared to the Glock issues of yesteryear.

The Brownells Youtube channel with Caleb and Steve is a treasure chest of AR building, tuning, and troubleshooting info.

It's all about having the ideal dwell time for gas interacting with your bolt carrier group. Different barrel lengths need different gas systems. Mid-length for 16" guns is generally more tame than traditional carbine length and has become more popular recently, especially if a suppressor is involved. Caleb at Brownell's explains it pretty well:

I think this is overhyped. Very few guns have "full case support." Early Glocks were notorious, but other brands have done the same thing. "Glock bulge" was more common in .40 guns, but was less a thing in gen 3 and later guns. I've resized zillions of .40 cases in a U-die that definitely worked the bottom of the case and never had a single problem. In my experience, loading .40 (bulged or not) has presented a lot less trouble than loading 9mm, probably due to the 9mm being around over a century and the resulting vast variety of troublesome 9mm brass one may encounter if a bunch of time is not invested in meticulous sorting.

After the first blown case, I would have stopped shooting and started pulling bullets. Measuring the charge weight of pulled bullets can be iffy (sometimes powder sticks or spills), but depending on the powder, 5.2 grains could be a significant overcharge.

Bump