Just purchased the super black eagle 2 ..have been shooting an 870 all my life full choke with lead,3 inch 2 shot 2 ounces for big canada's up here in canada. Just patterned it to shoot 3 inch 1 1/4 bb steel at 1400 fps,mod choke at 40 yds, in 30 inch circle. The sbe 2 patterned awesome ...in the 80+ %. I want to shoot the 3 1/2 inch steel bb 1 3/8 at 1565 fps with a modified choke. My question is , with that 3 1/2 load at that high speed with the mod choke ,through time will the choke stand up or should i go with a improved cylinder or get another style choke ?extended style.