[riverrat6340]

My new USFA single action 38 special revolver locks up due to primer protrusion with any load approaching 1000 fps. Buffalo bore Plus P loads lock up the gun and make cylinder rotation impossible. 950 fps handloads that shoot with no problems in my K-38 Smith and Wessons cause the same problem. I am using federal primers in my handloads.
I would like to load this gun up to the level of the original 38/44 loads, but it appears that some modification of the firing pin is going to be necessary with anything but light loads. Any thoughts or suggestions on how to deal with this would be appreciated.

[sant]

Try CCI primers. One of my customers had the same problem until he switched to CCI.

[Jim Watson]

Yup.
USFA uses the original conical black powder firing pin; which is why you have a .38 Special instead of a .357 Magnum. Harder primers like CCI or even Remington 7 1/2 small rifle might let you hotload it.