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November 14th, 2024

View of Firearm Functions from the Inside — Cool 3D Animations

Matt Rittman 3d 4d rendering animation firearms operation x-ray Mauser KAR98 Glock 19 Remington Rem 870 shotgun rifle pistol shotgun

Here’s a November video bonus for our Daily Bulletin readers. Today we showcase three of the most amazing 3D “cutaway” gun animations ever created. Watch the operations of a pump shotgun, bolt-action rifle, and semi-automatic pistol. The superb cutaway views show details of the firearms’ internal parts, and show how ammunition cycles start to finish. Each of these videos took hundreds of man-hours to create, and each has been watched many millions of times.


Remington 870 Pump-Action Shotgun

This 3D animation shows how a Remington 870 pump-action shotgun works. The animation is superbly done, showing every aspect of the internal operation. Folks, if you have any interest in shotguns you should definitely watch this video start to finish. This shotgun video has received 3.9 million views in just 10 days!

The video’s talented creator, Matt Rittman states: “Cinema 4D was used to create each individual part, as well as animating everything. Substance Painter was used to create the wood stock and fore-end textures. Corona renderer was used for final output of lighting and textures.” See more of Matt’s 3D videos on his popular YouTube Channel.

Video Highlights For Rem 870 Shotgun Animation

0:00 Intro
0:26 Ammunition Loading
0:57 Shell Carrier
1:13 Shell Latches
1:47 Bolt Locking
1:57 Firing Sequence
2:17 Shotgun Shell Anatomy
2:33 Shot Propulsion
2:51 Extraction & Ejection
3:10 Hammer / Trigger Reset

Mauser Karabiner 98K Bolt-Action Rifle Animation


This video has over 21 MILLION Views.

This 3D animation showing how a Mauser Karabiner 98K (KAR 98K) bolt-action rifle works. The Karabiner 98K is a controlled-feed bolt-action rifle based on the famous Mauser M98 system. Video creator Matt Rittman notes: “Cinema 4D was used to create each individual part, as well as animating everything. Substance Painter was used to create the wood stock texture. Corona renderer was used to render everything. This animation took me over 500 hours to create.” This video has been watched over 21 million times!

Matt Rittman 3d 4d rendering animation firearms operation x-ray Mauser KAR98 Glock 19 Remington Rem 870 shotgun rifle pistol shotgun

Every bolt-action rifle owner should watch this remarkable video. It shows key processes which are common to many actions — Cocking the Bolt, Feeding from magazine, Engagement of Bolt Lugs, Activation of Trigger and Movement of Firing Pin, and Extraction with Ejection. The modeling of the inside of the bolt and fire-control group is excellent. This really is a superb video that will help rifle owners understand what happening inside their guns as the bolt is cycled. See more of Matt’s 3D videos on his popular YouTube Channel.

Video Highlights for Karabiner 98K Animation

0:00 Intro
0:21 Cocking the Action
0:41 Loading
0:55 Ammunition Feeding
1:15 Firing Sequence
1:52 Extraction & Ejection
2:28 Safety Operation
2:59 Bolt Sleeve Lock

Glock 19 Pistol Animation


This video has over 78.6 MILLION Views!

This 3D animation demonstrates how a modern semi-automatic, double-action-only Glock 19 handgun works. Cinema 4D was used to create each individual part, as well as animating everything. Substance Painter was used to create the main textures. Corona renderer was used to render everything. This animation took me over 500 hours to create. one of the most-watched gun videos ever created, this Glock 19 animation has been viewed over 78.6 MILLION times!

Video Highlights for Glock 19 Pistol

0:00 Intro
0:11 Basic Function
0:39 Case Extraction
0:47 Cartridge Loading
1:02 Trigger Reset
1:28 Trigger Safety
1:40 Firing Pin Safety
1:53 Drop Safety
2:06 Barrel Rifling
2:21 Cartridge Feed

About Matt Rittman, the 3D Animator/Artist
Matt Rittman 3D computer animation graphics artist gun videosThese three amazing videos were all created by the gifted computer graphics artist Matt Rittman. On his Matt Rittman YouTube Channel, Matt states: “I’m a 3D Generalist/Motion Designer from Des Moines, Iowa. I have always enjoyed animation and illustrating how things work. I’m especially interested in cars and anything mechanical.

My aim for this channel is to provide easy to understand how-it-works 3D animations. I will occasionally be releasing tutorials centered around Cinema 4D and the different capabilities of the software.”

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November 14th, 2024

“Wind Hack” — Quick Way to Estimate Crosswind Deflection

Applied Ballistics Crosswind Estimation Wind hack G7 BC

Applied Ballistics Wind Hack

Any long range shooter knows that wind is our ultimate nemesis. The best ways of overcoming wind are to measure what we can and use computers to calculate deflection. The Applied Ballistics Kestrel is a great tool for this. As good as our tools may be, we don’t always have them at our fingertips, or they break, batteries go dead, and so on. In these cases, it’s nice to have a simple way of estimating wind based on known variables. There are numerous wind formulas of various complexity.

Applied Ballistics Crosswind Estimation Wind hack G7 BC

The Applied Ballistics (AB) Wind Hack is about the simplest way to get a rough wind solution. Here it is: You simply add 2 to the first digit of your G7 BC, and divide your drop by this number to get the 10 mph crosswind deflection. For example, suppose you’re shooting a .308 caliber 175-grain bullet with a G7 BC of 0.260 at 1000 yards, and your drop is 37 MOA. For a G7 BC of 0.260, your “wind number” is 2+2=4. So your 10 mph wind deflection is your drop (37 MOA) divided by your “wind number” (4) = 9.25 MOA. This is really close to the actual 9.37 MOA calculated by the ballistic software.

WIND HACK Formula

10 mph Cross Wind Deflection = Drop (in MOA) divided by (G7 BC 1st Digit + 2)

Give the AB wind hack a try to see how it works with your ballistics!

Some Caveats: Your drop number has to be from a 100-yard zero. This wind hack is most accurate for supersonic flight. Within supersonic range, accuracy is typically better than +/-6″. You can easily scale the 10 mph crosswind deflection by the actual wind speed. Wind direction has to be scaled by the cosine of the angle.

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November 14th, 2024

Tech Tip: Better Viewing with Magnifier for Balance Beam Scales

RCBS 10-10 Scale RCBS balance beam magnifier weigh powder reloading

When he measures his loads or sorts bullets by weight, Forum Member Boyd Allen often employs his trusty RCBS 10-10 balance beam scale (although he does have handy digital scales as well). He finds that the balance beam scale works predictably, time after time, and it doesn’t suffer from the drift and calibration issues that plague some of the less expensive electronic scales on the market.

RCBS Balance Beam scale 10-10 magnifier weigh powder reloading

To make it easier to see the balance point, Boyd has adapted a magnifying glass with a mirror. This makes the end of his balance beam easier to view from his normal position on the bench. Boyd explains: “This set-up uses a cheap magnifier with positioning arms that was probably designed to hold and magnify small objects while soldering them. I think that it came from Harbor Freight many years ago. The mirror lets you look at the scale as if is was at eye level, and of course the magnifier makes the image easier to see.”

If you have a balance beam scale, we suggest you try this simple enhancement. We predict you’ll find the magnifier speeds up the process with enhanced assurance of your load weight.

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