303 British – 174 Gr FMJ – Remington UMC (23701 / L303B1) – 200 Rounds

Shooting a Lee-Enfield is a big part of owning one, and the 174 grain FMJ is the closest commercial match to the British Mk VII service load. This listing is Remington UMC 303 British 174 grain full metal jacket ammo, MPN 23701, sold as 200 rounds. It gives collectors and shooters new, boxer-primed ammunition without relying on unpredictable corrosive surplus.

Remington rates this load at 2,475 fps with 2,366 ft-lbs of muzzle energy. The 174 grain FMJ bullet weight is close to the historic military loading, so it tends to shoot near the original rear sight settings on many Enfields. The full metal jacket is for target practice, vintage rifle matches, and plinking. It does not expand, so choose a soft point for hunting. Unlike much old surplus 303 ammunition, this new production load uses non-corrosive priming, so cleanup is simpler.

This ammunition fits rifles chambered in 303 British, including the No. 1 Mk III SMLE, No. 4 Mk I and Mk 2, No. 5 Jungle Carbine, Ishapore-made No. 1 Mk III rifles, P14 Enfield, Ross rifles, and sporterized Enfields. A common question is whether new 303 British is safe in a 100-year-old rifle. In a rifle in good mechanical condition with correct headspace, modern commercial 303 is commonly fired, but have an old rifle checked by a gunsmith first. Another common question is why my Enfield groups poorly. Worn bores, loose bedding, and bore diameter differences are common causes, so try more than one load.

Remington 23701 is new production ammunition, not reloads, made in the USA. It uses boxer-primed brass cases with non-corrosive priming, which also makes the brass reloadable, unlike most Berdan-primed surplus. This listing ships as 10 boxes of 20 rounds for 200 rounds total from one lot. That is enough for several vintage matches or a long season of range time with your Enfield.