SJHP vs JHP

[RB98SS]

Do you guys use load data for jacketed hollow points when loading semi-jacketed hollow point loads? I bought some SJHPs from Winchester and cannot find much load data on this particular design.

It's for .357. I have a lot of load data for the JHP design.

Thanks, Gary

 

[NCsmitty]

It's ok to use data according to bullet weight. As a rule bullet nose shape and jacketing differences does not enter into the equation, especially in handguns.

 

[The Bushmaster]

I'm with NCsmitty. Go for it...Load'em...

 

[rcmodel]

The only truly semi-jacketed bullets commonly available for reloading were the Speer 3/4-Jacket SWC they used to make in a few calibers.

The Winchester bullet is considered a true jacketed bullet, as the jacket completely encloses the lead core until it gets to the SP nose well down on the ogive.

You can use jacketed bullet load data for a similar bullet.

rc

 

[rfwobbly]

It's ok to use data according to bullet weight. As a rule bullet nose shape and jacketing differences does not enter into the equation....

Agreed...

...as long as the ogive lies in approximately the same place using the same OAL for the similar weight bullet. Some auto loaders are sensitive to the ogive location to guide the bullet into the chamber. Generally this is not an issue, but before you start using your reloads for SD you might want to fire 100 of the new bullet to see if any FTFs are occurring as a simple safety check. So OAL can affect feeding.

If feeding is the equivalent of the old round, but power seems to have been altered, than you might want to measure the length of the 2 bullets and make sure that the powder-end of the bullet is seated to the same distance from the case rim. So seating depth can affect chamber pressure (power).

See the attachment.

 

[bill in IN]

Pressure is determined by the weight of the bullet, the amount of bearing surface, and the type of bearing surface (copper or lead). As long as they are the same....

 

[The Bushmaster]

rcmodel...What about Remington SJHPs for revolver.