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Discussion Starter #1
Looking to start a load using the 230 grain Hornady XTP bullet and Winchester 231 powder.

Looking for COL and chrony results of any loads you have tried.

Thanks!

I will start low and work up, use at my own risk, no liablility for any other party, yadda, yadda, yadda. [/legalese]
 

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Discussion Starter #3
Yeah, I saw that. I was wondering if the XTP would have the leading edge at the same place as the flat point. I know enough to realize that if the bullet is seated too deep, it increases pressure. But I can't find a load in a manual for that exact bullet, so I thought I'd try a forum member who is using it.

John
 

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Discussion Starter #5
Ah,

On the imrpowder page I found this.

Bullet Weight (Gr.): 200 GR. SPR JHP
Powder: 231
Bullet Diam.: .451"
C.O.L.: 1.155"
Starting loads ( grs. / vel (ft/s) / Pressure): 5.2 / 794 / 12,700 CUP
Maximum loads ( grs. / vel (ft/s) / Pressure): 5.9 / 906 / 16,700 CUP




Does SPR mean Speer? Given the bullet diameter and weight, I would think the length of the bullets would have to be very, very close between the Speer and the Hornady, yes? So I should start at the bottom range with that 1.155" COL?

I'm trying to duplicate the new Fiocchi load with the 200 grain Hornady XTP bullet, and that is listed at 900 fp/s. That puts it at the max load, though, and I'm concerned about bullet seating depth and it's effects on pressure.

John
 

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Yes, I would start at 5.2. Depending on the velocity you want, you might end up around 5.6.
 

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JohnCollins said:
Ah,

On the imrpowder page I found this.

Bullet Weight (Gr.): 200 GR. SPR JHP
Powder: 231
Bullet Diam.: .451"
C.O.L.: 1.155"
Starting loads ( grs. / vel (ft/s) / Pressure): 5.2 / 794 / 12,700 CUP
Maximum loads ( grs. / vel (ft/s) / Pressure): 5.9 / 906 / 16,700 CUP




Does SPR mean Speer? Given the bullet diameter and weight, I would think the length of the bullets would have to be very, very close between the Speer and the Hornady, yes? So I should start at the bottom range with that 1.155" COL?

I'm trying to duplicate the new Fiocchi load with the 200 grain Hornady XTP bullet, and that is listed at 900 fp/s. That puts it at the max load, though, and I'm concerned about bullet seating depth and it's effects on pressure.

John
1.155 seems a little short to me but Speer has some “unique” bullet profiles on some of their bullets so it may be just fine.
I load my 230-grain XTP’s between 1.230 and 1.240

If you’re trying to duplicate the Fiocchi “Extrema” load recheck your source.
The info I have is this 900 f.p.s. speed is with the 230-grain XTP bullet.
Good Luck
 

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Discussion Starter #8
Thanks! I will.

John
 

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Discussion Starter #10
What luck! I was just at Valley Forge Gun Show and got a box of 20 rounds of Hornady ammo. 200 Grain Hornady XTP loaded to 900 fps!

I'll measure those. I love it when a plan comes together!
 

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John,

Midway's LoadMap (1998) lists the following for .45 ACP using the Hornady HP/XTP 230gr bullet:

gr psi fps
4.5 10200 621 minimum
4.9 12300 677
5.3 14500 733
5.7 16600 790
6.1 18800 846 caution
6.5 21000 903 maximum

COL 1.275" (which they list for all 230gr bullets)
 

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Discussion Starter #12
Thanks, TABlank, I got it wired, now.

I just got some Hornady Custom 200 gr. XTP ammo, which I will measure for COL. Then I'll start low and work up to 900 ft/s using my chrono.

No more replies needed. Thanks to you all!

John
 
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