These have published velocities of 1,145 and 1,200 f.p.s., respectively, from 30-inch barrels, although most 3 dram equivalent loads I've chronographed have run hotter by 20-50 f.p.s.
Published velocity: 1,255 f.p.s. Winchester AA hull Winchester 209 primer 21.0/Solo 1000 Winchester WAA12F114 wad 1-1/8 ounces lead shot Published pressure: 10,500 l.u.p.
It used another half gram of FFg black powder than did the 3-1/4 drams equivalent, and it impressed shooters with its speed of more than 1,300 f.p.s. Today, we can get that same velocity level with much less powder, such as:
If a customer comes in and says he's impressed with a certain 3 drams equivalent 16-gauge load he's using and would like to reload some akin to it, you can dig out this list and tell him it's a basic 1,240 f.p.s. velocity load with 1-1/8 ounces of shot.
For clay target shooting in American-style skeet and trap, we're learning that 1,050 to 1,200 f.p.s. is an effective range; in fact, the newer commercial "lite" loads are operating from 1,125 f.p.s.
The 140-grain bullet is gaining more acclaim, and the Sierra 140 spitzer boattail in the .270 Weatherby Magnum can reach 3,240 f.p.s. (53,500 c.u.p.) ahead of 68.1/RL-19 or 3,280 f.p.s.
For example, the 150 Nosler Partition did 3,090 f.p.s. (53,200 c.u.p.) with 64.8/RL-19 and 3,180 f.p.s.