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Remington 700 - 375 H&H Magnum barrel with KDF muzzle brake. Removed from a Remington 700 XCR II rifle with only one USAGE (70 rounds). Rifle was tested, then parted for a benchrest rifle build. Barrel was threaded, blended, and timed for KDF muzzle brake by Highly qualified professional gunsmith at National Armory in Pompano, FL.

KDF Muzzle brake reduces felt recoil to a 30-06.

$219 - Money order only plus shipping.

Some .375 bullets like the 350gr .375-Caliber MatchKing from Sierra have amazing long range capability at much lower cost than the 375 CheyTac or 338 Lapua. The 350gr Sierra MatchKing BC is .805 @ 2,200 fps and above .780 between 1,700 and 2,200 fps and .720 @ 1,700 fps and below. Consider this at less than a $1 in 500qty from Sierra or cheaper online.
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The .375 Holland & Holland Magnum (9.5×72mmB) is a medium-bore rifle cartridge. The .375 H&H was only the second cartridge ever to feature a belt, now common among magnum rounds.

The .375 H&H often is cited as one of the most useful all-round rifle cartridges, especially in shooting large and dangerous game.[4] With relatively light bullets in the region of 235 to 270 grains (15 to 17 g), it is a flat-shooting, fairly long-range cartridge ideal for use on light to medium game, whereas with heavy bullets of 300 grains (19 g) and greater, it has the punch necessary for large, thick-skinned dangerous game. In many regions with thick-skinned dangerous game animals.

Unlike what is seen in most calibers, many .375 H&H rifles also achieve nearly the same point of impact over a wide range of bullet weights at all commonly used distances, further simplifying a professional hunter's choice in selecting different grain bullets based upon the game hunted by requiring fewer scope or sight adjustments, which further serves to popularize the .375 H&H Magnum among professional hunters.

Production history
Designer Holland & Holland
Designed 1912
Produced 1912–present
Variants .375 H&H Ackley Improved, .375 Weatherby Magnum
Specifications
Parent case Unique
Bullet diameter .375 in (9.5 mm)
Neck diameter .404 in (10.3 mm)
Shoulder diameter .448 in (11.4 mm)
Base diameter .513 in (13.0 mm)
Rim diameter .532 in (13.5 mm)
Rim thickness .050 in (1.3 mm)
Case length 2.850 in (72.4 mm)
Overall length 3.6 in (91 mm)
Case capacity 95.3 gr H2O (6.18 cm3)
Rifling twist 1-12" (304.8 mm)
Primer type large rifle magnum
Maximum pressure 62,000 psi (430 MPa)
Ballistic performance
Bullet weight/type Velocity Energy
200 gr (13 g) JFP 3,195 ft/s (974 m/s) 4,534 ft·lbf (6,147 J)
235 gr (15 g) SP 2,964 ft/s (903 m/s) 4,585 ft·lbf (6,216 J)
250 gr (16 g) SP 2,835 ft/s (864 m/s) 4,463 ft·lbf (6,051 J)
270 gr (17 g) FS 2,694 ft/s (821 m/s) 4,352 ft·lbf (5,901 J)
300 gr (19 g) SPBT 2,645 ft/s (806 m/s) 4,661 ft·lbf (6,319 J)
The 375 H&H Magnum was so well designed and popular that it became the parent cartridge to all those listed below, especially noteworthy are the popular 300 Win Mag, 338 Win Mag, and the 6.5mm and 7mm Rem Mag.

Cartridges based on the full length .375 H&H Magnum case
.244 H&H Magnum - based directly on the .375 H&H case
7mm Shooting Times Westerner – Via the 8mm Remington Magnum
.30 Super A modified variant of the .300 H&H Magnum produced by Winchester
.300 H&H Magnum – based directly on the .375 H&H case.
.300 Weatherby Magnum – via the full length .30 Super improved
8mm Remington Magnum – necked down improved .375 H&H case
.340 Weatherby Magnum – via the full length .30 Super improved
.350 Griffin & Howe Magnum - based directly on the .375 H&H case
.358 Shooting Times Alaskan – Via the 8mm Remington Magnum
.375 Weatherby Magnum – via the .30 Super improved
.40 BSA Magnum
.400 H&H Magnum - based directly on the .375 H&H case
.416 Remington Magnum – via the 8mm Remington Magnum
.458 Lott – based directly on the .375 H&H case
.470 Capstick – based directly on the .375 H&H case

Standard length cartridges based on the .375 H&H Magnum case
.257 Weatherby Magnum – via the .30 Super
.26 BSA Magnum
.264 Winchester Magnum – based directly on the .375 H&H case
.270 Weatherby Magnum – via the .30 Super
.275 H&H Magnum - developed along with the .375 in 1912
7×61mm S&H - via the .275 H&H Magnum
7mm Remington Magnum – based on the .375 H&H case via the .264 Winchester Magnum case
7mm Weatherby Magnum – via the .30 Super
.300 Winchester Magnum – based directly on the .375 H&H case
.308 Norma Magnum – used standard length Weatherby cases
.33 BSA Magnum
.338 Winchester Magnum – based directly on the .375 H&H case
.358 Norma Magnum – used standard length Weatherby cases
.458 Winchester Magnum – based directly on the .375 H&H case

Short action cartridges based on the .375 H&H Magnum case
6.5mm Remington Magnum – via the .350 Remington Magnum
.350 Remington Magnum – via the 7mm Remington Magnum
.450 Marlin - via the .458 Winchester Magnum
 
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