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Perforating both Bill and Bob and not stopping before Ms Johnson neighbor.
-The action by a 30-06 Springfield bullet.
It’s not as dramatically as it sounds, but when test firing into telephone books, you should expect traveling right trough your entire neighborhood, even a few surrounding towns.
So why keep shooting in telephone books? Well, telephone books are the best poor-ballisticians test medium. While ballistic gelatin are expensive and not found at your local grocery, telephone books soaked with water, will give the bullet almost the same treatment as fired in an animals body. Vary with a dry telephone book in the middle and you can simulate hitting some harder tissues, like the thin bones in the shoulder.
So what equation do we use to calculate how many telephone books a given bullet should penetrate? There is no such equation, but comparing games shot in real life, with this test shooting in the telephone books, it will give us some indications. There are of course several factors which have influence in a bullets performance, especially in the ability to penetrate an animals body (and telephone books), but measuring  
  The Barnes X shows a excellent performance, even if the "propeller blades" are lost.
the penetrating and “wound channel” in telephone books will give some foundation to base a comparison on. I will however use a rough guidance that a bullet penetrating four catalogues, should reach vital organs from a clean side or front shoot of a living animal of approx 600-700 lbs. A 7-8 phone book “penetrater” should be proper medicine for animals up to approx 1200 lbs. I know some of you readers will disagree with my theory here, but just keep it in back of your head when reading the tables later in this article. Pick a bullet you know the actual performance of, as a reference for the other bullets.
  The bullet was fired over a chronograph and into a pile of wet phone books. Each phonebook (ca 1000 pages per book) was swelled to 5-6 inches after a night in water. After the shot, the pile was disassembled peace by peace to the bullet was found. If the bullet was short a few pages to penetrate an entire phonebook, it was written down with a minus sign.
Hornady's "Interlock" will help securing the core.  
If it penetrated the entire phonebook and even a few pages into the next, it received a plus sign after the numbers of penetrated phone books.
The expanded bullets front diameter was measured, also the bullet length. After the expanded bullet was put on the weight scale, the remaining percentage was calculated. Also if there was a core/mantel separation, a field in the table was checked.
Nosler Partition are a well proven design and will perform well, even if the core in the first "chamber" falls out. The Swift A-Frame (right) have ticker jacket and the core are brazed to the jacket, compared to the Nosler Partition bullet.
125 grs bullets, V0 approx 3120 fps.
Bullet Front dia. Length Remaning Penetration
Barnes X 0,47 0,47 78 % 5,5
 
150 grs bullets, V0 approx 2855 fps.
Bullet Front dia Length Remaining Penetration
Hornady 0,55 0,35 61 % 3,5
Sierra RN 0,59 0,39 72 % 3,5
Sierra BTSP 0,71 0,55 89 % 3,5
Hornady BTSP 0,63 0,43 71 % 4+
RWS TIG 0,59 0,39 70 % 4,5
Speer GS 0,59 0,55 93 % 4,5
Nosler Partition 0,51 0,43 73 % 5-
Barnes X 0,51 0,67 89 % 6-
 
154 grs bullets, V0 approx 2805 fps.
Bullet Front dia. Length Remaning Penetration
MEN SFG 0,67 0,79 99 % 4,5
 
165 grs bullets, V0 approx 2690 fps.
Bullet Front dia Length Remaining Penetration
Remington SP 0,55 0,35 62% 4-
Hornady BTSP 0,59 0,47 73% 4+
Sierra BTSP 0,67 0,59 90% 4+
RWS KS 0,51 0,47 71% 4,5
Speer RN 0,55 0,51 76% 4,5
Speer GS 0,67 0,55 88% 4,5
Swift A-Frame 0,59 0,63 95% 5,5
Nosler Partition 0,51 0,51 70% 6-
Hirtenberger ABC 0,59 0,79 97% 6
Barnes X 0,55 0,79 95% 6+
 
180 grs bullets, V0 approx 2560 fps.
Bullet Front dia Length Remaining Penetration
Sierra RN 0,63 0,59 84% 4,5
Remington SP 0,55 0,55 75% 4,5
Winchester ST 0,67 0,43 78% 4,5
Bitterroot SP 0,71 0,55 99% 4,5
Sierra BTSP 0,55 0,59 68% 4,5
Sako HH 0,59 0,55 80% 5-
Hornady RN 0,59 0,47 71% 5-
Sierra SP 0,55 0,59 74% 5
Norma Vulcan 0,59 0,51 80% 5+
Hornady SP 0,51 0,47 72% 5+
Norma SP 0,51 0,51 73% 5+
Norma Alaska 0,55 0,63 79% 5+
Nosler Partition 0,51 0,55 69% 5,5
Speer SP 0,51 0,51 66% 5,5
Swift A-Frame 0,55 0,79 97% 6-
RWS TUG 0,43 0,47 55% 6
Barnes X 0,47 0,84 89% 6,5
RWS HM 0,35 0,63 64% 9,5
 
185-190 grs bullets, V0 approx 2520 fps.
Bullet Front dia Length Remaining Penetration
Hornady BTSP 0,55 0,59 75% 5+
Lapua Mega 0,59 0,59 84% 5+
Lapua Mira 0,59 0,59 84% 5+
 
200 grs bullets, V0 approx 2460 fps.
Bullet Front dia Length Remaining Penetration
Norma Vulcan 0,59 0,59 73% 4,5
Sako HH 0,47 0,59 67% 5+
Jensen BTSP 0,63 0,83 96% 5,5
Speer SP 0,51 0,59 70% 5,5
Sierra BTSP 0,55 0,71 71% 5,5
Lapua Mega 0,55 0,63 81% 6-
Barnes X 0,63 0,83 100% 6
Nosler Partition 0,47 0,59 68% 6
Swift A-Frame 0,55 0,83 99% 6,5
 
220 grs bullets, V0 approx 2360 fps.
Bullet Front dia Length Remaining Penetration
Sako HH 0,59 0,75 81% 5
Winchester ST 0,59 0,67 76% 5+
Hornady RN 0,55 0,59 70% 5+
Sierra RN 0,67 0,75 86% 5,5
Nosler Partition 0,73 0,67 67% 6,5

 



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