Finally got my 28ga put together last night. Since I completed my slam with the 20ga, I want to try for one with a 28ga and .410. Haven't had a chance to pattern the 28 with TSS yet, but hopefully it's a shooter with the fixed modified barrel. I've seen and heard positive results from others. Cool thing is the frame on the 20ga, 28ga, and .410 870s are all the same, so once I get my slam with the 28ga everything will fit the .410!
For those with the 870 28ga fixed modified barrel, did anyone polish the barrel or just deep clean and pattern? I think I'll just clean it and pattern to begin. If I don't like the pattern, then I'll go to polish. Send barrel off to be choked as a last resort.