I was browsing sports authority today and took advantage of 50% off all hunting accessories and purchased a Preston Pittman Turkey Call and Choke tube combo. It was originally 59.99 marked down to 34.99...Another 50% was deducted offf the 34.99 making the cost 17.50...for that I got three mouth callers and a choke tube. How does this tube compare to the factory tube on my Remington 870 Super magnum? The price was just too good to pass up.