If you cast your own bullets, our crimp-on gas checks will enhance their performance. During sizing, the gas check crimps to the base of case lead bullets to seal gasses and protect the base from deformation. Hornady gas checks are the only real choice for bullet casters.
Specifications:

Type
Caliber	7mm
Size
Quantity	1000 Per Box
Weight
Function
Compatible With
Material
Includes
Capacity
Media Capacity
Finish
Grain
Media Type
Micrometer Type