Cartridges rated 65,000 PSI are best?

[Engineering101]

I found a list of cartridge pressures at this website:

http://kwk.us/pressures.html

I get to looking and notice that by far most of the cartridges are NOT rated to 65,000 PSI. The ones that are rated at least that high are these:

22-250 Rem, 223 WSSM, 243 WSSM, 6mm Rem, 25 WSSM, 6.5-06 A-S, 26 Nosler, 270 Win, 270 WSM, 7mm WSM, 7mm Wea, 7mm STW, 300 WSM, 300 RCM, 300 Wea, 300 RUM, 300 Lapua, 8mm Rem Mag, 325 WSM, 338 RCM, 338 RUM, 338 Lapua, 358 STA, 416 Taylor, 416 Rem

There are a lot of popular cartridges NOT on this list: 30-06, 260 Rem, 7mm Rem Mag etc. That brings up the question of what are the benefits of being able to run at a higher pressure? I can think of a few:

1. Not as likely to stretch primer pockets (like I do with the 260 Rem) with higher pressure rated brass.

2. Higher performance hand loads that burn powder more completely.

It seems like most of the newer cartridges are going to 65,000 PSI so it must be all good right? Is there a downside?

 

[Mikecr]

The only way to see your brass pressure rating, with your chamber, sizing fit, action, bore, etc. is for YOU to test and measure it. That 'rating' will amount to the change you accept.
It is local, yours is not mine.