I got the "low pressure" stuff off a graph on the internet someplace
We've been through this more than once.
You misinterpreted a table that included reloaded Federal shells and forevermore have it stuck in your head that Federal factory shells are loaded to lower pressure.
These shells were improperly stored, thus the rust.
The Top Gun, while it has gone through several versions over the years, is currently a good target shell. The shot tests as very hard. They burn much cleaner than the smokey old Federals of old. The paper base wad is long gone.
Federal kept many people shooting through the pandemic supply shortages I think mainly because they control their own supply of components. They were the first to be readily available again on the shelves of most Walmart stores.
That said, these shells are manufactured to a price point. As Ted and others have pointed out, many guns are better served with brass headed shells. Still, steel headed shells don't rust when stored someplace dry.
