RE: which rifle slug?
I have many rifled barrel slug guns, and they all love LIGHTFIELD EXPSLUGS. The Shotguns I have are : 1 REMINGTON 11-87 SPS 12ga. took a black bear with it back in 2003 at 50yds., 2 ITHACAS MODEL 37, a 12ga & 20ga, and 2 MOSSBERGS 500 both in 12ga & 20ga. For knock down power with 100yds. my friends and I love the LIGHTFIELD EXP SLUGS. But like others have said on this post, you have to try differnt brands to see what your MOSSBERG likes.