I started the Weekend Knowledge Dump series in March of 2012. This is installment number 750. That’s right. Seven hundred fifty straight weeks without missing a single installment in more than 14 years. I’ve published this Knowledge Dump every week from the United States as well as from more than 40 other countries. I haven’t missed a single week no matter where I’ve been or how busy I’ve become. On several occasions, I published the Dump from various hospital beds.
It’s been quite a ride. Back when people actually read blogs like this, at least 20,000 of you would consume the knowledge dump on a weekly basis. It’s how many of you first learned about me and my training. Now it seems almost pointless to keep it up. Fewer than 3,000 people read it each week and page views have been steadily dropping by 10-20% a year since 2017. My website operates at a significant net loss. No sane person would spend 40+ hours a week researching and compiling articles in this format for the $200 a month I get in advertising income.
But no one said I was sane. I’ll keep doing the dump as long as I have the time and ability to write it. The odds are very tiny that I will make it to the 1000 episode mark, so we’ll celebrate this one instead. For the small number of you readers who tune in to this list every week, I thank you.
Greg
Knowledge to make your life better. If you have some free time, check out some of these links this weekend.
.22 Magnum Spanks .380 ACP! Winchester FMJ Flat Point Ballistic Gel Test
Let’s start this edition out with some .22 magnum love. I regularly carry a S&W 351C in a pocket holster. I really like the cartridge because it generally punches above its weight. For more .22 magnum info, check out:
.22 Magnum Rivals 9mm? CCI Uppercut VS CCI Blazer Brass JHP – Ballistic Gel Test
.22 Magnum Revolver for Self-Defense? – Firearms News
Note that two of these links involve ballistic gel testing. None involve shooting at pork roasts or heads of lettuce. Meat tests aren’t valid.
Practical Preparation and Survival After a Nuclear or Radiological Incident
Useful information. You can get the Potassium Iodide capsules mentioned in the article on Amazon.com.
Wallet – The Hideout
My friend Mark Luell is selling some wallets that contain an integrated sheath for the Ka-Bar Last Ditch knife that I designed. I purposely made this knife small enough to fit inside a wallet as a hideout option. I currently carry mine in a pocket of the wallet I keep in my front pocket. Mark’s modification makes access even easier. It’s a great design for you folks who want to conceal a tiny knife in non-permissive environments.
Common Problems & Solutions with AR-15 Barrels
A lot of technical information about AR-15 rifle barrels.
The Great Vertical Grip Debate of 2026
People argue about the most insane things on the internet. This is one example. How about trying a vertical foregrip and seeing if it makes you shoot better? If it does, keep it. If it doesn’t, take it off. It really isn’t that difficult.
The FBI Reports That Murder Officially Fell At The Fastest Pace Ever Recorded in 2025
I think some of this involves statistical manipulation by the governments who report the data, but I’m still calling it a win.
Situational Awareness: Stop Trying to Notice Everything
You simply can’t notice EVERYTHING around you. Instead, focus your attention on aberrations and deviations from baseline “normal.” For more info on situational awareness, read Claude’s series. Start with Practicing Awareness – Part III.
Idaho Murders Stopped By Man With A Gun; Comped Guns For Protection; Gun Sales Decline
Go to about 22:45 for a nice discussion of my close quarters gunfighting instructor class from a student in June. Thanks Deron!
Ground-Fighting Realities and How Not to Get Stomped into a Stain
An aspect of ground fighting that isn’t often taught in most MMA-based grappling programs is what to do when the defender is grounded and the attacker is still standing. This happens a lot in real fights. You should spend some time doing the work in this type of scenario. In this article. Mike Janich gives you some tips to get started.
Three Ways Not to Get Students Killed or Injured During Training
Some basic safety rules for law enforcement force on force training.
Revolvers Never Fail Part 2 | Revolvers Still Fail ⋆ Primer Peak
As a revolver fan, I hate to admit it, but lots of revolvers leave the factory with very significant problems.
Breaking Down the Steps to the Fastest Draw: Access and Presentation
Massad Ayoob’s tips for a faster draw.
DOJ Says Lawful Gun Owners Can Carry In Post Offices » Concealed Carry Inc
The latest on post office carry.
Training on a Budget: Low Round Count Drills to Keep Your Skills Current
Shooting drills to try on your next range session. If you are looking for more drills, try Drill of the Month: Kelly’s 3×3 Reload Challenge
Shooting Tips: Fighting with an AK
Valuable advice for you AK shooters.
Suppressors
Tips for accuracy testing your firearms that are equipped with cans.
‘I want to speak with your supervisor’: Addressing a growing trend in police encounters
My police readers should have a policy covering this ubiquitous request.
Bronze Age Mindset
What I’m reading…
I learned of this book when listening to a podcast titled Bronze Age Reset: De- and Re-Mythologizing the Manosphere. Those of you who have an open mind and an interest in the history of masculinity and true warrior tradition might find value listening to it.
Testing every revolver speedloader I could find….. so far
A good review of revolver speedloader options.
Your Qualification Score Doesn’t Predict Gunfight Performance
Just remember that every cop killed in a gunfight was deemed “qualified” by his agency. Also on the topic, you might like A Fresh Look at Pistol Qualifications.
1986 VS 2026: Guns And Ammo Pricing
Really interesting comparisons.
Tourniquets Suck for EDC: Carry This Instead | Swift/Silent/Deadly
Justin has a good point.
Ayoob: Is Open-Carry Irresponsible (or the Right Move)? – The Armory Life
Massad Ayoob’s thoughts about open carry. Thanks to Mas for mentioning my article on the topic. If you want to see the database I’ve amassed covering incidents where open carriers were disarmed by criminals, read Friends Don’t Let Friends Open Carry.
For an extra take on the subject, check out 3 Reasons WHY PRINTING MATTERS.
Moving or Traveling With Your NFA Collection
For those of you who have NFA items in your collection.
Quote to Ponder:
“In the beginner’s mind there are many possibilities, but in the expert’s mind there are few.”
— Shunryu Suzuki
Some of the above links are affiliate links. I earn a small percentage of the sale price from qualifying purchases.