Big bore air rifles shoot big game airgun rounds and that's exactly what the Umarex SLA airgun bullets are. Big. They're .510 caliber sized lead slugs that are made for big game hunting rifles like the .50 caliber Umarex Hammer. Umarex SLA or Solid Lead Ammo is available in three weights and are made in the U.S.A.
UX SLA 320 Grain Hollow Point .50 Caliber Ammo for the Umarex Hammer PCP Big Bore Air Rifle
550 Grain Hard Cast UX SLA Slug for the .50 Caliber Umarex Hammer
UX SLA .50 CALIBER 275 GRAIN LEAD AMMO 20CT
UMAREX SLA .50 CAL 350 GRAIN LEAD AMMO 20CT
UX SLA 350 Grain .50 Caliber Slug for the Umarex Hammer
UX SLA .388 Grain Hollow Point Slug for the Umarex Hammer PCP Air Rifle