Like Corbanzo said, they will work, and I have done so plenty of times in the past. Just start at your starting load, and work up slowly....., watching out for pressure signs. I would stay below book max on any load that was originally tested with a standard primer.Larry
When I've thought about storing components,
its always been with thought to worst-case and SHTF scenarios! (something I leanerned from my dad).
But also where I live in the country, many times I might be in SNOW and winter conditions.
Magnum primers are typically something I consider for MOST of my reloading, for long-term storage ammo.
I would pick up a few thousand of any primer!
Last time I saw primers.... last month... 209 was the only thing any gun shops had around.
Not surprised about the shotshell primers (size 209's), and I actually should check on THOSE again!
Also last primers I bought were 1,000 Remington 6 1/2's, that lend themselves well to loading for rounds like the .22 Hornet, .218 Bee, .221 Fireball, etc. Paid $43 for those.