|
|
|
|
|
|
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 |
|
|
|
|
|
|
|
|
|
|