Remington XP-100

Remington XP-100
The Remington XP-100
Type	Bullpup bolt-action pistol
Place of origin	United States
Production history
Designer	Remington Arms Company
Designed	1961
Manufacturer	Remington Arms Company
Produced	1963–1998
Variants	XP-100 Varmint Special, XP-100 Silhouette, XP-100 Hunter, XP-100 Custom, XP-100R, XR-100 Rangemaster
Specifications
Barrel length	10.75 or 14.5 in. (273 or 368 mm)
Cartridge	.221 Fireball,, .22-250 Remington, .223 Remington, .250 Savage, 6mm BR Remington, 7mm BR Remington, 7mm-08 Remington, .308 Winchester, .35 Remington
Action	Bolt action
Effective firing range	200–300 m
Maximum firing range	300 m
Sights	Iron sights on original version, Optical scope

The Remington XP-100 (from eXperimental Pistol number 100) is a bolt-action pistol produced by Remington Arms from 1963 to 1998. The XP-100 was one of the first handguns designed for long-range shooting, and introduced the .221 Remington Fireball (often called .221 Fireball). The XP-100 was noted for its accuracy and is still competitive today in the sport of handgun varminting, which it helped create.

The XP-100 was based on Remington's short action bolt action carbine, the Remington Model 40X, which influenced the later Remington Model 600 rifle. The XP-100 was initially introduced with a 10¾" barrel set into a nylon stock with an unusual center-mounted grip. Chambered in .222 Remington in early prototypes, the short barrel produced significant noise and muzzle flash. Subsequently the case was shortened to reduce powder capacity to a volume more suited to the shorter barrel of a pistol. The resulting cartridge, the .221 Fireball, produced factory loaded velocities of over 825 m/s (2700 ft/s) from the short barrel, and accuracy rivaling the parent .222 Remington, one of the most accurate cartridges made.

All but the XP-100R model were single-shot designs, while the XP-100R had a small internal magazine (holding four rounds), similar to most bolt-action rifles. The R model - for "repeater" - was made 1991-1997 in .223 Rem., .250 Savage, 7mm-08 Rem., .308 Win., .35 Rem., and 350 Rem. Mag. It was reintroduced in 1998, this time without sights, in .223 Rem., .22-250 Rem., .260 Rem., and .35 Rem.

The XP-100 went through a number of changes during its production run, and many variations were only available through the Remington Custom shop. The most significant changes in the later versions were to barrel length, which went to 14½", and the grip location, which was moved to the rear of the stock. The calibers changed; with the elimination of the original 10¾" barrel, the reduced powder capacity was no longer such a requirement, and the chamberings switched to standard commercial rifle cartridges. By the time the XP-100 was discontinued, it faced stiff competition from other bolt-action pistols such as the Savage Striker as well as the versatile Thompson Center Arms break-action Contender.