I have used RST in all gauges, ten to twenty eight. Some time back, I was given a full chart of RST pressures, all of which were sufficiently low for use in light composite barrel guns. They will provide pressure figures for specific loads on request but warn us that pressure levels change with each batch, so published figures are approximate. The shells are so pretty I hate to shoot them. I just bought a batch of RST 28 gauge #7 lead that I'll use for everything from quail to preserve pheasants. I believe they are 5/8 ounce loads and are very light recoil in my underweight, short chamber guns.
