All About Guns Ammo

The .25-06 Remington

This round is very popular in Texas. Where I have found that those Old Boys are very savvy about their guns. So take that  for what it is worth!
I found it to be a very flat shooting, low recoil round myself.

.25-06 Remington
25-06 Remington.JPG

.25-06 Remington cartridge
Type Rifle, Hunting
Production history
Designer Remington Arms Company
Designed 1969
Manufacturer Remington
Produced 1969-Present
Parent case .30-06 [1]
Bullet diameter .257 in (6.5 mm)
Neck diameter .290 in (7.4 mm)
Shoulder diameter .441 in (11.2 mm)
Base diameter .470 in (11.9 mm)
Rim diameter .473 in (12.0 mm)
Rim thickness .05 in (1.3 mm)
Case length 2.494 in (63.3 mm)
Overall length 3.250 in (82.6 mm)
Case capacity 65.8 gr H2O (4.26 cm3)
Rifling twist 1 in 10 in (250 mm)
Primer type Large rifle
Maximum pressure 63,000 psi (430 MPa)
Ballistic performance
Bullet mass/type Velocity Energy
100 gr (6 g) PSP-CL 3,230 ft/s (980 m/s) 2,316 ft⋅lbf (3,140 J)
115 gr (7 g) PSP-CL Ultra 3,000 ft/s (910 m/s) 2,298 ft⋅lbf (3,116 J)
120 gr (8 g) PSP-CL 2,990 ft/s (910 m/s) 2,382 ft⋅lbf (3,230 J)
Test barrel length: 24″
Source(s): Remington Arms [2]

The .25-06 Remington had been a wildcat cartridge for half a century before being standardized by Remington in 1969. It is based on the .30-06 Springfield cartridge necked-down (case opening made narrower) to .257 caliber with no other changes. Nominal bullet diameter is 0.257 inches (6.53 mm) and bullet weights range from 75 to 120 grains (4.9 to 7.8 g).


Charles Newton necked down the .30-06 Springfield cartridge in 1912 to accept the 117-grain .25-35 Winchester bullet.[3] Newton’s early modification encouraged commercial release of a shortened case (from 63 to 49mm) as the .250-3000 Savagein 1915.[4] Frankford Arsenal developed an experimental .25-06 during World War I; and distribution of surplus United States military equipment through the Civilian Marksmanship Program following the war encouraged independent gunsmiths to experiment with the cartridge.[3] A. O. Niedner of Dowagiac, Michigan introduced rifles for the .25 Niedner in 1920.[5] Niedner Arms Corporation retained the 17° 30′ .30-06 shoulder chambering .25 caliber barrels rifled with one twist in 12 inches (300 mm).[6]Similar cartridges were identified as the .25 Hi-Power, .25 Whelen (analogous to .35 Whelen), or .25-100-3000 (to indicate the ability to achieve 3000 feet per second with a 100 grain bullet rather than the 87 grain bullet used in the .250-3000 Savage). Greater case capacity offered minimal velocity improvement over the .250-3000 Savage case with contemporary smokeless powders.[7] Availability of DuPont‘s Improved Military Rifle (IMR) powders encouraged commercial release of the .257 Roberts using the 57mm-long Mauser case in 1934.[8] Release of IMR 4350 in 1940 and availability of surplus 4831 powder salvaged from Oerlikon 20mm cannoncartridges after World War II greatly improved performance of the full-length .25-06 case.[9]


The cartridge is capable of propelling a 117 grain (7.6 g) bullet at up to 3,200 feet per second (980 m/s) and energy levels up to 2,500 ft⋅lbf (3,400 J). Bullets lighter than 75 grains are available in .257 caliber, but were designed for the smaller .25-20 Winchester and .25-35 Winchester cartridges and are too lightly constructed for the high velocities of the .25-06.
The cartridge has less felt recoil than a 30-06 in a similar weight rifle, due to the lighter weight bullets used. Shooters who are recoil sensitive will find the recoil from the 25-06 bearable, but not pleasant enough to shoot all day long. This cartridge is not quite as powerful as the .257 Weatherby Magnum, usually running 200–300 ft/s (61–91 m/s). slower with a given bullet weight.
SAAMI pressure limit for the .25-06 is 63,000 PSI.


Left: .17 HMR, center and right: .25-06 Remington

.25-caliber bullets typically have high ballistic coefficients without being heavy. This characteristic, when combined with the large case capacity of its parent .30-06 case, allows relatively high muzzle velocities without heavy recoil. The combination of high ballistic coefficients with high muzzle velocities give the .25-06 a very flat trajectory as well as retaining kinetic energy down-range.
The .25-06 is generally considered to be a good round for medium-sized game such as deer and antelope because of its combination of substantial kinetic energy and moderate recoil. The addition of a flat trajectory makes it particularly popular in plains states where the open fields can require longer-range shots on game, as this flatness tends to minimize range-estimation errors by the hunter. However bullet types and weights are loaded that allow the .25-06 to be used for taking game ranging from small animals like prairie dogs and coyotes to heavier elk. These bullets range from lightly constructed 75-grain bullets with muzzle velocities in the 3,700 ft/s (1,130 m/s) range to more robust 120-grain bullets with muzzle velocities in the 3,000 ft/s (915 m/s) range.
Most manufacturers of bolt action or single-shot rifles offer the .25-06 as a standard chambering and factory loaded ammunition is available from RemingtonWinchesterFederal Cartridge and most other major manufacturers.


The .218 Bee

.218 Bee
218 Bee.jpg

Left, compared to .223 Remington
Type Rifle
Place of origin USA
Production history
Designer Winchester
Manufacturer Winchester
Produced 1937
Variants .218 Mashburn Bee[1]
Parent case .32-20 Winchester
Case type Rimmed, bottleneck
Bullet diameter .224 in (5.7 mm)
Neck diameter .242 in (6.1 mm)
Shoulder diameter .329 in (8.4 mm)
Base diameter .349 in (8.9 mm)
Rim diameter .408 in (10.4 mm)
Rim thickness .065 in (1.7 mm)
Case length 1.345 in (34.2 mm)
Primer type Boxer; small rifle
Ballistic performance
Bullet mass/type Velocity Energy
35 gr (2 g) VMax 3,205 ft/s (977 m/s) 799 ft⋅lbf (1,083 J)
40 gr (3 g) BT 3,130 ft/s (950 m/s) 870 ft⋅lbf (1,180 J)
46 gr (3 g) JFP 2,708 ft/s (825 m/s) 749 ft⋅lbf (1,016 J)
50 gr (3 g) BT 2,654 ft/s (809 m/s) 782 ft⋅lbf (1,060 J)
Source(s): Hodgdon [2]

The .218 Bee is a .22 caliber centerfire rifle cartridge designed for varmint hunting by Winchester in 1937. The cartridge was originally chambered in the Winchester Model 65 lever-action rifles, which may have ultimately led to its lack of popularity. The cartridge is named for the bore diameter of the barrel in which the cartridge is chambered rather than the usual practice in the United States of having the cartridge’s nomenclature reflect in some way the bullet diameter.


The .218 Bee cartridge was designed by Winchester for use in their Model 65 lever-action rifles. Winchester designed the cartridge by necking down the .25-20 Winchester cartridge to accept a .224 diameter bullet. Just as the .32-20 can be considered to be the parent cartridge of the .25-20, it can also be considered the parent cartridge to the .218 Bee. The cartridge was introduced as a commercial cartridge by Winchester in 1937 in their Model 65 lever action rifle, which was also chambered for the .25-20 and .32-20 Winchester cartridges. However, while the .25-20 and the .32-20 Model 65 rifles had 22 inch (560 mm) barrels, the rifles chambered for the Bee sported 24 inch (610 mm) barrels.
While early on the cartridge showed some promise, the cartridge never really caught on, even though it was later chambered by Winchester in the new bolt-action Model 43 rifle and by Sako in their L-46 rifle. There was some question about the accuracy of the .218 Bee as compared to the .222,[citation needed] but that was likely due to the difference of inherent accuracy between the bolt-actions rifles commonly chambered for the .222 and the lever-actions commonly chambered for the .218 Bee. Although not in common use, it’s still a very effective cartridge in its class, for example small to medium varmints out to about 200 yards (180 m). Production ammunition and rifles are still available from a few manufacturers.


In terms of relative performance, the .218 Bee falls between the smaller .22 Hornet, and the larger .222 Remington and the more popular .223 Remington. In terms of short range velocity the .218 works quite well.


The .257 Roberts, The Most Useful Round that I have ever used on the range or in the Field!

.257 Roberts
257 Roberts.JPG
Type Rifle
Place of origin United States
Production history
Designer Ned Roberts
Designed 1920s
Manufacturer Remington Arms
Produced 1934-Present
Variants .257 Roberts (+P), .257 Roberts Ackley Improved
Parent case 7×57mm Mauser
Case type rimless bottlenecked
Bullet diameter .257 in (6.5 mm)
Neck diameter .290 in (7.4 mm)
Shoulder diameter .430 in (10.9 mm)
Base diameter .472 in (12.0 mm)
Rim diameter .473 in (12.0 mm)
Case length 2.233 in (56.7 mm)
Overall length 2.775 in (70.5 mm)
Rifling twist 1-10″
Primer type large rifle
Ballistic performance
Bullet mass/type Velocity Energy
75 gr (5 g) HP 3,450 ft/s (1,050 m/s) 1,983 ft⋅lbf (2,689 J)
100 gr (6 g) B-TIP 3,020 ft/s (920 m/s) 2,025 ft⋅lbf (2,746 J)
117 gr (8 g) SPBT 2,840 ft/s (870 m/s) 2,096 ft⋅lbf (2,842 J)
Test barrel length: 24
Source(s): Accurate Powders [1]

The .257 Roberts also known as .257 Bob [2] is a medium-powered .25 calibercartridge. It has been described as the best compromise between the low recoil and flat trajectory of smaller calibers such as the .22 and 6mm, and the strong energy but not the strong recoil of larger popular hunting calibers, such as the 7mm family and the popular .30-06.[3]


Many cartridge designers in the 1920s were creating various .25 caliber cartridges. Because of its size, the 7×57mm Mauser case was a common choice, having near the ideal volume capacity for the “quarter-bore” (called this because the .25 caliber is one quarter of an inch) using powders available at that time. Ned Roberts is usually credited with being the designer for this cartridge idea. Eventually in 1934 Remington Arms chose to introduce their own commercial version of such a cartridge, and although it wasn’t the exact dimensions of the wildcat made by Roberts, they called it the .257 Roberts.[4]
From its introduction until the appearance of more popular 6 mm cartridges such as .243 Winchester and 6mm Remington, it was a very popular general purpose cartridge.[5] Today, although overshadowed by other cartridges, it lives on with bolt-action rifles being available from some major manufacturers.

Conversion of war-souvenir Japanese Arisaka rifles[edit]

Japanese Type 38 Arisaka rifles brought to the United States as wartime souvenirswere sometimes converted by rechambering to utilize more readily available .257 Roberts cartridge cases because commercially produced 6.5×50mm Arisakacartridges were scarce prior to distribution by Norma Projektilfabrik A/S. The neck of the Roberts case would be slightly enlarged to accept handloaded 6.5 mm bullets. The modified Roberts cases are sometimes known as 6.5×.257 Roberts, although the case headstamp may still indicate .257 Roberts.[6] Neither unmodified .257 Roberts ammunition nor the original 6.5×50mm Arisaka ammunition are suitable for firing in rechambered Arisaka rifles.[7]


With light bullets the .257 produces little recoil and has a flat trajectory suitable for varmint hunting. With heavier bullets it is capable of taking all but the largest North American game animals. The original factory load for this is very similar to the .250-3000 Savage.

Improved cartridges[edit]

Remington introduced the commercial version of this popular wildcat as a low-pressure round. At the time there were many older actions available of questionable strength. With a modern action and handloading, this cartridge is capable of markedly improved performance.[4]
One of the common improvements is called the .257 Roberts(+P) which has a SAAMI maximum pressure limit of 58,000 PSI compared to the 54,000 PSI listed for the standard .257 Roberts.[8]
P.O. Ackley said that the .257 Roberts Ackley Improved was probably the most useful all-around cartridge.[9] The Ackley Improved was a typical change of a steeper shoulder coupled with blown-out sides for more of a straight cartridge, providing greater powder capacity.


Quick .25 caliber comparison chart
cartridge Bullet Weight Muzzle Velocity (ft/sec) Muzzle Energy (ft·lbf)
.250-3000 Savage [10] 100 2911* 1882*
.257 Roberts [1] 100 3020 2025
.257 Roberts (+P) [1] 100 3090 2120
.257 Roberts Ackley Improved [11] 100 3226 2311
.25 WSSM [1] 100 3313 2438
.25-06 Remington [1] 100 3324 2454
.257 Weatherby Magnum [1] 100 3512** 2739**
6.5×55mm [12] 100 3183 2250

Using a 24″ barrel except:

* using a 22" barrel.
** using a 26" barrel.