I'm passing along a good bullet trap build I found on eBay if anyone's interested. This guy makes a pretty nice bullet trap if anyone is interested. I bought one and have ran 1200 rounds through it. Shooting indoors at 10 yards it has a bit of noise with 50.15 grain JSB's (louder than the gun) but I think that rubber spray-on bed liner may tone that down. He makes and sells one or two per week.
https://www.ebay.com/usr/mark_schluender?_trksid=p2060353.m2749.l2754
https://www.ebay.com/usr/mark_schluender?_trksid=p2060353.m2749.l2754