Looks pretty effective bullet is you asked me, that energy dump was bananas.

I think we are splitting hairs here with all the numbers minutia. All I know is actual STREET performing data. My former LE agency employer (with 10,000 sworn LEO’s) has been issuing us the 147 HST for over a decade now and my employer as a whole has killed DOZENS of bad guys with that specific round. Also they tested barrier penetration and the 147gr didn’t deflect as much as the 124’s when striking car windshield at obtuse angles nor with safety glass on the side of vehicles. It also penetrated better through solid wood doors in testing than the 124gr. While nobody can go wrong with either weight HST, as they’re both “lethal,” I’m sticking with what I know works like a fricking BOSS and from what I’ve seen first hand on real life two-legged, bath-salt influenced zombies.

Great loads! A lot cheaper than HST

Have no problem with the 215 Berger and 230 Hornady A-TIP MATCH with LRT powder. You was incorrect about the 300NM is a 338NM brass necked down to 308 caliber.

No gel block will ever produce any results close to what a human body will. Fluids make a difference along with bone and muscle density. For home defense nothing will ever compare to a shotgun, nothing, period. Say what you want.

Bullet balance matters a lot (think of an unbalanced tire). If the mass of the bullet is not exactly around the centerline of the bullet, each rotation will cause the bullet to shift position. Sometimes you can visually check boat tail bullets by rolling them along a sheet or glass and observing the shank to boat tail line. I don't know of an easy way to check flat base bullets.

"Accuracy testing" with a 3 moa setup.

Thanks for another informative video. Also, yes, I have heard and read that sorting brass and bullets is important. Your comment that it may make a difference if you have a custom barrel makes sense. Thanks.

Didn't like it.... Funny

There seems to be a rash of videos about bullet stability, lately. I IS possible to "overstabilize" a bullet. Like the rest of the general universe, we operate in FOUR "dimensions"; Z, Y, Z and T (Time). This is fairly important. We "spin" bullets to stabilize them in flight. Even round, lead balls. See the huge difference between smooth-bore and rifled muskets shooting round balls of similar diameter. This has been observed and studied for about three hundred years. A chap named Greenhill did a prodigious amount of work on this business and came up with the "Greenhill formula" just in time for the ballistic world to be turned on its head. The appearance of "cylindrical" bullets and then smokeless powder somewhat "overstretched" his initial envelope, but not too much. Once a bullet leaves the muzzle, it is subject to two major forces; Air resistance (drag), and GRAVITY. At supersonic speeds, MOST of this drag is in the form os high-presssure "shock cones, and not just from the pointy meplat. And, remember, serious rifle bullets are rotating at thousands of rpm,unlike supersonic aircraft. The entire idea of spinning a bullet is ti impart "gyroscopic stability"that will maintain alignment with the "line of departure. (Where the barrel is pointed at the moment of discharge). Great idea, BUT, gravity inexorably pulls the bullet,spinning or not, toward the ground.. Thus the "natural" flight-path is NOT a straight line and not even a simple "arc" but a PARABOLA, more or less. And so, If the bullet is spun too fast, it will try to stay on the line of departure rather than align with the parabola. Aerodynamics will "kick" it back on line, but not necessarily EXACTLY on the original trajectory. Optimally-stabilized bullets make many "micro-adjustments" as they fly. UNDER-STABILIZED bullets will wander all over the place. There is, essentially, a "window" of optimal stabilization.. Also, over stabilization" is not usually noticeable until well down-range, say five or 600 yards, when weird groups start occurring.. There are, or have been, several long dissertations about this on various sites. Even several barrel makers have chipped in with detailed articles. Also, higher altitudes and higher temperatures make for thinner air, which is less resistant. This is the reason the original 1:14 inch twist od the M-16 was changed f inches to 1:12 inches; in the high Arctic, stability was assessed as being sub-optimal.

For 20 Rounds:of the HST = $29 and 20 Rounds of the Punch = $20 times 10 Boxes = $90 Bucks... PS: 9 out of 10 Female Cops perfer deep Penatration 👀

I like my 270 wm, basically a 30 06 case necked down to 6.77. i don't plan on ever shooting over 5, 600 yards

I’ve also been shooting 30 shot groups. Initially it was disappointing because none of my rifles are as accurate as I thought. I’ve got quite a few 30 shot groups and they are all right around that 1.500” range. Interesting to see you are getting the same. Thanks for the video. One more thing. My rifles are a CZ 600 on the cheap end and a Waypoint 2020 on the most expensive end. With a couple in between. They all shoot about the same.

why are you running the 308 with a 168 gr bullet at 2400 fps? are you that afraid of it. your should be getting 2700 fps easy. Man it up little bit and run your weapon. The .308 likes full cases and higher pressures. I shoot the 308 at 300 and 600 yards competition all the time without any problems.

Great video, good sir, as was your previous one. Have you ever had a reason to measure the concentricity of the bullet in multiple locations? Perhaps if the bullet looked like it was keyholing into the target?

One thing I started doing since I start land jumping multiple types of bullets is when I've taken a measurement from nosler, horandy, barnes bullets from the maximum length in my chamber then take the round measurement backed off a few thousands and set in my bullet seating die. I use my rifle and a split case with each manufacture of projectile to determine the maximum OAL to my chamber. Now when I have that die dialed in for that measurement for say nosler I take the tail of my digital calipers and measure the length of height of my bullet seating dial (hornady die) and now I have a record to put me in the ball park on a OAL of a particular projectile. Now each brand is going to contact the die differently so you have to measure the die height for each projectile manufacture. This is obviously a work around to the fancy bullet seating dies with just a standard die and calipers(I do not own a ogive tooling so my measurements are from tip to base). Now my question to you @sdweber, do you think if you're advancing the projectile which in turn is creating more space in the case - could you put the charge hotter since you have more space inside the cartridge and still be safe?

I tried replacing my Lee 45 Auto seating dir with one of those fancier Redding dies with the micrometer-style dials, and I found it less consistent than the Lee die. My Lee seating die easily keeps a .003 COAL tolerance. I do like the expander Redding die, but wouldn’t give up my Lee seating due for anything.

cool video

Sure you don't have a unrifled barrel in that? 😄

So, the sd would indicate that annealing before sizing produces more consistent neck tension, or at least a neck tension that you rifle likes.

Which one has more recoil

Idk, but you must had slammed the piss out of it

Any of these for 14x1 lh, AK-47?

Be nice to see these fired out of a 16 in.Carbine?

There is an accuracy node every .006

The 8 blk out with 1:1 twist rate is crazy i wonder if other calibers would benifit from that...but gems of knowledge dropped in this video

For flaring pistol brass, the Lyman M Dies are the absolute best product on the market.

Wear glasses and gloves!

I have been using the .22 cal insert to measure the .308 bullet seating depth. I don't understand if all we are doing is to find max COAL so I can set the die to seat .020 less, why would it matter where on the bullet we are taking measurements from as long as it's not the tip? It's a relative measurement anyway, so why must it be taken at the Ogive and not somewhere above it. Can you explain? Thanks.

I like your testing, but you put too much emphasis on over penetration trust me until you get over 20 inches you have not over penetrated. Humans are much harder than ballistic jell. I have seen it first hand

Applied Ballistics has a huge bullet BC catalog that lists SD, I7, G7, and G1.

Very well thought out & explained. Thank you.

Thank you for this! Planning on the Acive8 and wanted to decide on head or neckband and how they each fit. I think neckband now

I appreciate your video.

Wow, where have I been ? This is a sage content video, and useful. I don’t use M/S products, so need to transfer your Excel instructions to Libre Office Spreadsheet.

ewww tavor

I hate that all modern FPS games have glint as a 100% occurrence rate and visible from an unlimited distance!! I knew this couldn't be that common in real life! Excellent video thank you.

An overstabilized bullet shows itself only at subsonic speeds. When the cone of air stops helping it to fly straight, then due to high revolutions around its axis, the nose of the bullet begins to look up. An unstabilized bullet begins to behave unpredictably at 100 yards. This is clearly visible on paper. The grandfather in this video is mistaken

When you get a puff of grey cloud twenty feet from your muzzle, you’re over spinning. Yea. Seen it.

*Look into boat-tails becoming unstable upon leaving the muzzle, due to gasses escaping around the base causing wobble, the exact opposite of what it was designed for.*

Thanks for this.

Very well explained

I'm glad someone FINALLY decided to make a video on this. Putting a 1/3 twist barrel on your grandpa's 30-30 isn't going to magically give it match-grade performance. Bullet profile and consistency have more to do with accuracy than over-stock twist rate. Also, there are a lot of "match grade" bullets out there, that simply aren't. People think those words automatically translate to better accuracy... when it could simply be a specified profile/weight of any sanctioning body. Back in the old days of shotgun slug matches, some rules actually dictated real slugs... as in, what closely resembles a piece of bar stock with a round nose.

Put the centrifugal force into the equation. An over spun bullet will fly apart . The center of gravity and the center of mass are not in the same place for a bullet but a foot ball they are. Make a bullet where the front and the back are the same and spin rate won't matter. Modern bullets do not arc over like a foot ball.

The RPM of the bullet can be calculated knowing twist rate and velocity.

The ATF must be gone !

Beautiful work

Thank you! This was very informative.

Yep, I am gut-twisted every time someone uses that term "over-xxx". See, I can't even type it. My question always was, "For a given cartridge/bullet combination, as the twist rate increases and one moves from under-stabilized (big groups on paper) to marginally stabilized to stabilized (smaller groups) at what point do you have too much stabilization? On the other hand, an excessive spin is easy to detect by midflight disintegration. 'Overbore' is another imprecise term I am loath to use other than to point out its users employ it to put on a facade of knowledge.

In my experience, 'a little too much' overspin is better in results than 'a little' underspin. In .308 caliber, the 1903 Springfield was designed for 220 grain round nosed bullets initially, but quickly changed to a somewhat faster 150 grain spitzer bullet. The rifle twist was kept at the initial 1 rotation in 10 inches (1in 10) twist. I have loaded and shot bullets in a similar barrel with weights from 147 grain to 220 grain and all seem to do well for me. This may be explained by accuracy requirements. I do not shoot bench rest, so my accuracy expectations - requirements are not as great. That could be the explanation. In anecdote, I do have an older rifle with a well used barrel. The rifling is so worn (bad) one can identify the type of bullet at 25 yards. The bullet struck sideways. (I did rebarrel that rifle.)