I brought a thread titled "RST Low Pressure Shells" to the top on the PGCA forum so we could get some more particulars on pressure readings on RST ammunition. On the last page of that thread, more pressure readings on more different loads are mentioned. Among the different pieces of information on that thread are mentions that the test gun has a 24" barrel, so the velocity readings may be exceeded in our longer waterfowl guns. There are also mentions of the crimp styles and tube material in the various loads, information also available on the RST website.