RST A5 pressure?

[Joe from MO]

On the home page of RST website it says....

Our shells are safe to shoot in Vintage Guns. Even with Damascus and Twist Steel barrels!

Of course after a reputable SxS gunsmith has given the OK.

(With the exception of the Pigeon loads, A-5, Heavy Hunting)



So, the A5 shells, probably not a good idea in "some" vintage guns.....

[Drew Hause]

We have good data for the pressures of turn-of-the-century 1 oz. 16g Bulk Smokeless Powder loads
2 1/2 Dr. Eq. (1165 fps) was about 7000 psi;
2 3/4 Dr. Eq. (1220 fps) about 8500 psi;
3 Dr. Eq. was about 10,000 psi
Dense smokeless would be higher.

IMHO if barrels, after a proper evaluation, are felt to be unsafe at 8000 psi, they are likely unsafe with any hunting or target load.