For rifles, this 55 grain #1355 Full Metal Jacket Boat Tail bullet was designed specifically to duplicate the military M193 bullet, and it is intended for use in semi-automatic rifles, such as the AR-15, M16 and Ruger Mini 14. It features an exceptionally heavy full metal jacket with a cannelure properly located for crimping and positive feeding. This is an excellent bullet for hunting varmints and small game where pelts are to be preserved. It should be loaded to medium velocities for this purpose.
In handguns of 22 caliber, this is a non-expanding bullet that will minimize damage to pelts as well as meat in small game. It is best used at medium handgun velocities to prevent tumbling upon impact. It is an ideal choice for the trapper or pelt hunter with a handgun in a 22 centerfire caliber.
For rifles in 30 caliber, these bullets are designed for medium- to long-range hunting with cartridges having medium to large case capacities for powder. These bullets often display match grade accuracy from accurate hunting rifles. The famous Sierra Spitzer Boat Tail shape assures flat trajectory, excellent resistance to crosswinds and vertical winds, and maximum energy delivery to the target. Good penetration and expansion are characteristic of these bullets even at the reduced impact velocities at long range. With the weight range available, at least one of these bullets will prove ideal for almost any 30 caliber cartridge. The 165 grain #2145 bullet is best suited to medium game at all velocity levels, and game the size of elk could be taken with confidence providing velocity doesn't exceed 3000 fps and the range is limited to about 300 yards.
In handguns chambering 30 caliber cartridges, prior to the introduction of the Remington Model XP-100 (and similar handgun designs) utilizing larger rifle cartridges, the usefulness of these bullets was limited. Now, these bullets have a very definite niche as superbly accurate hunting bullets. Previously considered "too hard" for expansion, they perform well at the 2500 fps muzzle velocities achievable in the 308 Winchester and larger cartridges. Ease of loading and precise concentricity contributes to their excellent accuracy. Sierra's Spitzer Boat Tail design assures flat trajectory and high energy delivery downrange with low sensitivity to crosswinds and vertical winds. These bullets are suitable for varmints through large game at all ranges a prudent handgunner would normally attempt.
In rifles, this 100 grain Spitzer bullet #1540 has a heavy, double-tapered jacket to ensure adequate penetration with reliable expansion on medium game. This bullet may be the correct choice for hunting large varmints as well as deer or antelope. It also may be the bullet of choice in some rifle's because its flat base construction enhances accuracy in that particular rifle.
In handguns, the 100 grain #1540 Spitzer bullet is too "hard" for use on field game due to the moderate velocities from all but the largest wildcat cartridges. However, this bullet will deliver to outstanding accuracy in long-range target competition and high momentum downrange for silhouette competition from handgun barrels with standard twist rates.
The #1540 was introduced in 1956.
For rifles, this bullet is designed specifically for the 375 Winchester cartridge. It has Sierra's unique PowerJacket and provides outstanding terminal performance. Sierra's Power Jacket ensures positive but even expansion in conjunction with good penetration on medium to heavy game. The cannelure location is correct for crimping, and the flat point was designed for use in tubular magazines. This bullet is also very effective in the 375 H&H Magnum, but velocity should be kept around 2200 fps to avoid over-expansion in game.
For handguns, although the bullet is designed for rifles chambered for the 375 Winchester cartridge, it quickly found a home in the 375 Super Magnum revolver. Thompson Center currently chambers the T/C Contender for the 375 Winchester as well. Designed for the modest velocities generated by 375 Winchester rifles, this bullet performs very well in a handgun. The large amount of exposed lead at the tip and the PowerJacket skiving assure quick, even expansion at all suggested velocities and ranges, making this bullet the best choice in this caliber for field use on game. Traditional Sierra accuracy assures success on medium to large game and silhouettes.
The #2900 was introduced in 1987.