Shot a SAIGA 12 semi-auto shotgun using 12 & 20 round drums, the 12 round drums were PRO MAGS & the 20 round drum was a MD. This SAIGA 12 was fun to shot, i had 2 rounds on the 20 round mag fail to eject after shooting over 50 rounds, once i sprayed lube on the bolt, i didn't have anymore jams. The 2 rounds that fail to eject were WINCHESTER target loads (low brass #8 shot size)