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*** WARNING
***
Ballistic data shown in
this page was obtained by Chaparral Arms laboratory under strictly
controlled conditions.
Your reloads must
contain the exact combinations listed in this page. NEVER EXCEED
charge recommendations listed here.
Ballistic data varies
considerably depending on many factors, including components used,
how such components are assembled, the type of firearms used and the
reloading techniques and safety precautions utilized by the
individual.
Chaparral Arms
specifically disclaims any warranties with respect to any and all
products sold or distributed by it, the safety or suitability
thereof, or the result obtained, whether express or implied,
including without limitation, any implied warranty of
merchantability or fitness for a particular purpose and/or any other
warranty. Users assume all risk, responsibility and liability
whatsoever for any and all injuries (including death), losses, or
damages to persons or property (including consequential damages),
arising from the use of any product or data, whether or not
occasioned by seller's negligence or based on strict product
liability or principles of indemnity or contribution.
Chaparral Arms neither
assumes nor authorizes any person to assume for it any liability in
connection with the use of any product or data.
The individual assumes
the risk of safe loading practices. Failure to do so or violation of
any of the above warnings could result in severe personal
injury (including death) or gun damage to the user or bystanders.
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Caliber 40-60 |
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Type of case |
Chaparral cases |
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Correct rim thick (max) |
0,062 (1,57 mm) |
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Correct diameter of
bullets |
0,406 |
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Maximum total lenght
of ammo |
2,255 (57,28 mm) |
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Head diameter |
0,627 (15,92 mm) |
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Loading data |
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Type of powder |
Kemira 110 18 grs, IMR 4198 23 grs |
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Type of bullets |
RN |
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Bullet weight in
grain |
240 grs |
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Caliber 45-60 |
| Type of case |
Chaparral cases |
| Correct rim thick (max) |
0,062 (1,57 mm) |
| Correct diameter of bullets |
0,459 |
| Head diameter |
0,627 (15,92 mm) |
| Maximum total lenght of ammo |
2,255 (57,28 mm) |
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Loading data |
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Type of powder |
Kemira 110 19 grs, IMR 4198
25 grs |
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Type of bullets |
RN |
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Bullet weight in grain |
330 grs |
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Loading data |
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Type of powder |
N135, 46 grs |
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Type of bullets |
Sierra 458 FNHP |
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Bullet weight in grain |
300 grs |
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Primers |
CCI BR |
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Loading
data |
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Type of powder |
N135, 45 grs |
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Type of bullets |
C.A. 459 DIA |
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Bullet weight in grain |
330 grs |
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Primers |
CCI |
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Loading
data |
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Type of powder |
N135, 41 grs |
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Type of bullets |
458 DIA |
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Bullet weight in grain |
400 grs |
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Primers |
CCI |
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Loading
data |
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Type of powder |
N140, 47 grs |
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Type of bullets |
C.A. 459 DIA |
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Bullet weight in grain |
330 grs |
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Primers |
CCI |
Bullet brand C.A.= Chaparral Arms |
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Caliber 45-75 |
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Type of case |
Chaparral cases |
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Correct rim thick (max) |
0,062 (1,57 mm) |
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Correct diameter of
bullets |
0,459 |
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Maximum total lenght of
ammo |
2,255 (57,28 mm) |
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Head diameter |
0,627 (15,92 mm) |
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Loading data |
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Type of powder |
Kemira 110 20 grs, IMR
4198 27 grs |
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Type of bullets |
RN |
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Bullet weight in grain |
330 grs |
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History of
45-75 caliber |
The .45-75 Winchester was introduced
with the Model 1876 lever action
repeating rifle. This was an enlarged
version of the famous Model 1873 action
designed for use with cartridges up to
2.25" in length.
The .45-75 Win. used a rimmed bottleneck
case that was shorter and fatter than
the .45-70 Government.
The action of the Winchester 1876 rifle
was not particularly strong, so the
.45-75 was factory loaded with a 350
grain bullet at a MV of 1383 fps and ME
of 1485 ft. lbs. This was ballistically
inferior to the .45-70-405 and
.45-70-500 as a buffalo cartridge, but
its lever action rifle allowed much
faster repeat shots. Teddy Roosevelt is
said to have favored the .45-75
Winchester as a grizzly bear cartridge. |
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Caliber 50-95 |
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Type of case |
Chaparral cases |
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Correct rim
thick (max) |
0,062 (1,57 mm) |
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Correct diameter
of bullets |
0,513 |
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Maximum total
lenght of ammo |
2,255 (57,28 mm) |
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Head diameter |
0,627 (15,92 mm) |
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Loading data |
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Type of powder |
Kemira 110 22 grs, IMR 4198 28 grs |
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Type of bullets |
RN |
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Bullet weight in
grain |
375 grs |
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History of 50-95
caliber |
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The largest calibre for the
Winchester Model 1876 "Centennial"
rifle. Rifles of this calibre
were sometimes called the “Cat
Gun” due to the fact that many
of them were used in Africa and
India on lions and tigers.
The
short 300 grain express bullet
had a reputation of delivering a
tremendous blow up close on soft
skinned game, but was also known
to loose it’s velocity quickly
at extended ranges due to it’s
fat and stubby bullet shape.
Rifles have a barrel twist rate
of approximately 1 in 60”, so it
is unlikely that bullets heavier
than 350 grains will stabilise. |
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