HP vs. Round nose

[Defc0n]

Hopefully a simple question here...

I think I remember reading somewhere that reloading data for jacketed HP bullets can be interchanged with jacketed round nose bullets, as long as everything else remains the same (OAL, powder charge, etc). I've got some round nose bullets lying around but only have data in my books for hollow point bullets, they are the same weight.

Can't seem to find where I thought I read that and didn't want to assume anything.

Thanks

 

[Slamfire]

As long as you are not shooting maximum loads you should not have a problem. For me, bullet weight is the most important issue for pressures, then comes issues such as bearing surface, seating depth, and bullet construction. I assume you are talking about pistol loads, and you are talking about bullets with a lead core.

When you get into rifle bullets and maximum loads, take nothing for granted.

 

[rcmodel]

+1

Except, RN bullets almost always seat longer then JHP of the same weight.

Do Not use the suggested OAL from JHP data for seating RN bullets.

The OAL Will Not remain the same.
Hornady manual for instance data for 124 grain 9mm.

Powder charges are the same.
But the RN seats 1.150".
The JHP seats 1.060".

Take the barrel out of your gun (if you are asking about pistol reloading???)

And drop the long seated round in the chamber.
If it hits the rifling and won't fall in all the way?
Keep seating it slightly deeper until it does.

Undoubtedly, it will end up longer then your JHP data calls for.

rc

 

[Defc0n]

Thanks for your responses.

Yes, it is for pistol reloading. I'm probably just going to use them for plinking, so wont start, and probably never will get near, a max charge for powder. I just wanted to verify that I can use the powder charges listed. Should have figured OAL may differ just due to the different bullets. Will probably due what RC suggested using the barrel as a case gauge.

 

[LiveLife]

+1 on using the barrel to determine the max OAL/COL. Walkalong has an excellent thread to determine max and working OAL/COL - http://www.thehighroad.org/showthread.php?t=506678


When I cannot find loads for FMJ/RN bullets from current load data, I reference other published and older load data.

2004 Alliant load data has FMJ/RN loads - http://www.thehighroad.org/attachment.php?attachmentid=182147&d=1364769070

1999-2005 Winchester load data has FMJ/RN loads - http://www.thehighroad.org/attachment.php?attachmentid=159609&stc=1&d=1329800605

2006 Hodgdon load data has FMJ/RN loads - http://castpics.net/LoadData/Freebies/RM/Hodgdon/Hodgdon2006.pdf

Lyman #49 and other reloading manuals have load data for FMJ/RN loads.

 

[Walkalong]

When the same weight HP & RN bullets are seated to the same depth, the HP will always have a shorter OAL. Along the same lines most HP loads will be shorter than RN loads, regardless of whether they are seated to exactly the same depth.

So, no, everything will not remain the same, but can still be OK.

 

[Reefinmike]

+1 on using the barrel to determine the max OAL/COL. Walkalong has an excellent thread to determine max and working OAL/COL - http://www.thehighroad.org/showthread.php?t=506678


When I cannot find loads for FMJ/RN bullets from current load data, I reference other published and older load data.

2004 Alliant load data has FMJ/RN loads - http://www.thehighroad.org/attachment.php?attachmentid=182147&d=1364769070

1999-2005 Winchester load data has FMJ/RN loads - http://www.thehighroad.org/attachment.php?attachmentid=159609&stc=1&d=1329800605

2006 Hodgdon load data has FMJ/RN loads - http://castpics.net/LoadData/Freebies/RM/Hodgdon/Hodgdon2006.pdf

Lyman #49 and other reloading manuals have load data for FMJ/RN loads.

Or in some cases the barrel and the magazine!

I loaded up a hundred 230gr xtp's using my g41's barrel to determine OAL... I had to go back and seat them deeper once i found out I couldnt load the last 5 rounds in the magazine due to OAL.

 

[LiveLife]

Walkalong has an excellent thread to determine max and working OAL/COL

230gr xtp's using my g41's barrel to determine OAL... I had to go back and seat them deeper once i found out I couldnt load the last 5 rounds in the magazine due to OAL.

Yes, barrel's leade/free bore and start of rifling determine the max OAL/COL but the pistol and magazine will determine the working OAL/COL.

After you determine the max OAL, you should always determine the working OAL next before conducting the powder work up.