New Reload Data Caught My Attention . . .

[Dutchboy]

There are some differences in measuring pressure between the old cup methods, and the newer piezo ( and strain gauge) methods.

Still, those differences remain theoretical for all but a few reloaders. For the "common loaders", velocity is the best pressure gauge out there (and it's a good one).

If you are higher than book speed, you are higher than book pressure. So, in my opinion, if you have a standard rifle, a chrony will answer your questions.

That said, there are tremendous differences within the belted brass universe. For example, I have a 7mag, and FC brass holds 83 grains of water. Wby brass holds 89.5 grains! That's 8% difference!

Before you lose too much sleep, see what the case capacities were of the brass they used. It may have been substantially different from your brass. Likewise, a long throat (seating bullets long) can have a significant impact on loading data. FWIW, Dutch.