I ended up buying a case of Clays from a guy (paid too much, didn't research before hand, shame on me).
Pressure? How do I check or "watch" for pressure? I don't have a chronograph which I believe measures velocity. How does one check for high pressures?
"Check or watch for signs of high pressure", is repeated
endlessly to beginning handloaders as "safe practice" but the
reality is that pressure differences in handgun loads are
virtually impossible for handloaders to accurately read. Unless
pressures are way beyond normal and something like case
failure or gun damage has occured the handloader most
likely will be unaware. A good explanation of why this so is
in the Speer manual. Some folks obsess over starting very
low and carefully working up loads that are very low pressure
at the top charge weights. The best clue the average
handloader gets about pressure comes from the chronograph.
This isn't just my idea, to those who love to pick at other's
posts instead of making any contribution to the topic of
question. As some experienced authors have pointed out,
if you see higher than expected velocity from a load using
a proper powder and bullet combination then it's a good
bet the pressure is higher than expected as well. If you
stick to published pressure tested loads there is little to
fear regarding some mysterious high pressure the chicken
littles like to worry about. Having a good idea of what
velocity you can actually expect in your gun from any
handload is a big help. The harsh reality is that some
loading manuals use long test barrels rather than real guns
and their published velocities are meaningless. The bottom
line is that every handloader needs a chronograph and the
most useful handload data often can be found in well written magazine articles. Something that comes with lots of
experience is that the handloader will have a very close idea
of the velocity he can expect from a load before he even
tries it.