Bullet Performance Database

Anyone know how to measure “smack factor”

Tissue damage is tissue damage it’s how big game dies. Round nose or not…
I like the way this works out
Weight × Velocity × Diameter divided by 7000
= smack factor
 
Ohh we are talking “facts” My bad

A flat nose bullet sends a “shockwave to the heart” causing the animal to drop?? Really, lol.

Im am sorry, but you have no idea what you’re talking about.

Disrupting the heart or even EXPLODING it has nothing has nothing to do with dropping an animal. The only way to drop an animal is to disrupt the CNS.

The fudd is strong with you.
Sorry my friend the fudd is extremely strong in you. Once again you choose to miss understand what is written. The Facts I referred to are the results of people shooting using the flat nosed and or round nose bullet. Seems you cannot understand this. I do not know why.

Nowhere did I say "A flat nose bullet sends a “shockwave to the heart” causing the animal to drop?"

Re the CNS, there are different ways to effect this, like loss of blood. What I wrote about the heart and a pressure wave to the brain has been expounded by people far more versed in animal anatomy and how things work than me and obviously you.

It is clear to me you have very little idea, knowledge or experience in the real world. By the way "EXPLODING" the heart disrupts the CNS and I never mentioned anything about exploding hearts. If heart cannot pump blood then the brain ceases to function and the animals dies. Fairly simple biology. But you probably know better.

If you want to mount a reasonable argument, then try staying with what is said and don't put words into others mouths so to speak. You may also like to take note of punctuation marks like ?. Would indicate a question not a statement.
 
I
Pretty common for finishing shots at PB range not to exit.

The bullet is hitting at full muzzle velocity and can over expand like yours did. That much expansion creates a ton of drag and can almost “parachute” the bullet.

You’re probably more likely to get an exit at 200 yards than at 3 feet because there’s less stress on the projectile.
I seem to recall that: some older American hunters, occasionally used their ‘squib’ loads for finishing shots i.e., head shots at close quarters.
 
He says winchester ammo

This might be a clue to the root of the problem. The only true bullet failure, I have ever experienced was with Winchester ammo. That is why I stopped using all of their ammo products.

If you are willing to consider input from others, I would offer my thoughts? First, I am not a fanboy of the 6.5cm. It is a little cartridge that is good for target shooting and deer hunting and sits in between the 243 and the 7mm/08, both of which are also considered good deer cartridges. No surprise that the 6.5 is also good. Your experience with the 30-30 on hogs is likely due to three common factors:

  • 30-30 is usually used at closer ranges inside 100y on game since most are iron sights only.
  • 30-30 is firing a larger caliber bullet with a heavier weight.
  • The flat nosed cup n core bullets most common with 30-30 are very soft and very reactive which results in large expansion and rapid damage in the permanent and temporary wound cavity.
If you fire a heavy, reactive bullet with the 6.5cm you will likely see similar results but light frangible varmint bullets can fragment too fast and fail especially at close range. 6.5cm is perhaps not as good since it is smaller and lighter even with its largest bullets. If you shoot the pigs from under 100y, that too will help, but you need to choose a proper bullet. Try a Federal Fusion in your 6.5 or a Trophy Bonded Tip or Nosler AccuBond. They have a 140g Fusion bonded core that runs about 2725 muzzle velocity and at 100y will expand to about 2.4x in hog flesh. They do not fragment at close range and will often penetrate all the way thru the animal.

For what it is worth, the last hog I killed was shot with a 308 handload using a 165g Nosler ballistic tip at a range of 5 feet. The bullet impacted the pig's shoulder in a broadside stance as it was fighting with our dogs. Bullet damaged both lungs and many of the large blood vessels just above the heart and exited the opposite side. He flinched and ran off. But he was dead on his feed and dropped after running 30 paces in about 4 seconds. He weighed in at 325lbs live weight. We killed several others that day. One with a 30-06 that ran about 10ft, and another with a 45acp using a 230g HP which dropped in its tracks from a heart shot. Two more were killed with 44mag pistol and a 7mm Mag rifle both at close range and both DRT. None of those were CNS shots.

Another observation is that some claimed that CNS shots are the only way to produce a bang flop result on game. True that a good CNS shot is one way but it often only results in paralysis of the animal in many cases who then sits bleeding, terrified and may require a 2nd finisher in many cases. For me, I do not like to do that. A brain shot is fatal in nearly all cases even with a 22lr but if we are trophy hunting it is hard on the head. If we are varmint hunting hogs, coyotes, PD's it is a viable shot.

A heart shot with a proper caliber will often have the same DRT effect without the need for a 2nd shot. In my opinion the smaller the bullet, the more important it is to choose a good bullet that will both hold together and expand enough while also penetrating all the way thru the pig. A small deep wound is better than a larger surface would. A big deep wound is mo-betta, lol. Choose wisely.
 
It all makes sense to me. Velocity, diameter of bullet, bullet weight and bullet construction all differentiate the outcome.

In our experience, we have seen trends. Not "never" or "always" but trends.

The .308 ammo we are using is the 150grain eldx, which is the same bullet we use in the 7mm-08 and that bullet seems to work well for us.

On the Winchester ammo, it was probably the cheapest box at the feed store.
 
If asked about what to expect from North Fork SS (bonded core) bullets what to expect, I always say perfect mushrooms and on average 95% weight retentions. These are 4 bullets from our recent hunt. They are 300gr .375s att about 2550fps out of my M70. At the low end is 92%, at the high end 98% and two in the middle at 95%. What I've been seeing from the North Forks for years now and lots of downed animals.

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If asked about what to expect from North Fork SS (bonded core) bullets what to expect, I always say perfect mushrooms and on average 95% weight retentions. These are 4 bullets from our recent hunt. They are 300gr .375s att about 2550fps out of my M70. At the low end is 92%, at the high end 98% and two in the middle at 95%. What I've been seeing from the North Forks for years now and lots of downed animals.

View attachment 790593

View attachment 790594View attachment 790595View attachment 790596
Now if they'd just make more and distribute in the usa better...
 
On a recent meat hunt, I harvested an elk cow with the 7 Backcountry 168 grain Barnes LRX, 257 yards through the neck, dropped her right there. I’ve been averaging 2964 fps out of an 18” barrel on my R8. It was a shoot-through.

IMG_4011.jpeg


My hunting partner took a bison bull with a 300WM 180 grain TTSX at 2950 out of his R8. Shot just behind the ear, this was also a shoot-through and also an immediate drop.
 
Caliber: 275 / 7x57 (Rigby Highland Stalker)
Bullet: 160 Grain North Fork SS
Muzzle Velocity: 2550
Recovered bullet is from a Blesbok, 100 Yard shot, through the shoulder and found just under the skin on the opposite side.

My daughter and I spent some time @Bos en Dal SAFARIS and took 1 x Blesbok, 1 x Hartabeest, and 3 x Wildebeest with the 160 grain bullet. All performed the same and were found just under the skin on the opposite side.
IMG_5217.jpg
 
350 grain Barnes TTSX out of a 416 weatherby mag. The first bullet picture was through the shoulder and the other two pictures are the bullet shot through his hip into his stomach as he was running off. I would say that for hitting hard bone the 416 weatherby has too much velocity for the ideal expansion of that bullet. It didn't mushroom so much as shed everything in front of the core.
 

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350 grain Barnes TTSX out of a 416 weatherby mag. The first bullet picture was through the shoulder and the other two pictures are the bullet shot through his hip into his stomach as he was running off. I would say that for hitting hard bone the 416 weatherby has too much velocity for the ideal expansion of that bullet. It didn't mushroom so much as shed everything in front of the core.
Through the shoulder of what?

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