"We are excited to announce the addition of the .338 Federal to our growing line up of quality Starline rifle brass. To continue to meet customer demand, we're now producing .338 Federal brass and will soon offer .243 Win, .223 Rem, .300 Blackout, 6.5 Creedmoor, 7mm-08 and .260 Rem.

The .338 Federal was introduced in 2006 by Federal and Sako. It can achieve the same muzzle energy as some magnum calibers, but with less recoil. It also fits in standard length short action rifles and AR-10's without sacrificing magazine capacity. It hits harder than the .308, and shoots flatter than the .358 Winchester, making it an excellent choice for close- to mid-range hunting."

per email from Starline.