Bullet interchangeability

[Mambochicken]

Hey all, hoping someone can help point me in the right direction here. I’m wondering if anyone has compiled a bullet interchangeability list.

Here’s why I ask. I’m looking to load up some 460 Rowland loads with 200 gn X-treme HP pills (thanks to Wes of course) but none of the load data covers them. I see Speer Gold Dots, and Hornaday XTP’s and that’s it. And those two have quite different charges for the same powder, and different COAL in some cases. And with the pressures on this cartridge I don’t want to screw around.

So I thought I’d check here to see what you all knew. I could probably back off the lowest charge and work up I guess, but wanted to at least ask for thoughts on it first.


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[ReneeMicelli]

I looked in the stuff I have and did not find anything other than what you already found. I have a feeling you are going to have to start low and work up.

[Mambochicken]

I didn’t see it in my manuals either. That seems like something someone should have put together though.

I suppose I could work up to it, but at 12 gn of powder per round it’s going to burn a lot of powder to get it right I bet.


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[ReneeMicelli]

No doubt.

[Wes Sage]

Load with low to mid range jacketed dats buddy.
That is how plated bullets are loaded
I got in some 460 brass Friday too

[Mambochicken]

Yeah, I guess I’ll just have to work my way up to it. The data I’ve seen shows pretty narrow bands between min and max (0.4 grn spread) and no plated data at all. I’ve seen some say to go 10% under stated to start, but that’s 1.2 gn down. That seems like a lot to me, but might be right.

Oh man Wes, your killing me. I’d love to get more brass, but it’s not in my budget right now. I just burned my toy budget on a new holster.


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[Wes Sage]

When I loaded for my 460, I was using AA#9 powder, and 230-265gr bullets. I did work plated bullets up too, and got pretty decent loads with the 230gr RN Xtremes.

Yeah, I guess I’ll just have to work my way up to it. The data I’ve seen shows pretty narrow bands between min and max (0.4 grn spread) and no plated data at all. I’ve seen some say to go 10% under stated to start, but that’s 1.2 gn down. That seems like a lot to me, but might be right.

Oh man Wes, your killing me. I’d love to get more brass, but it’s not in my budget right now. I just burned my toy budget on a new holster.


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[Mambochicken]

Good to know, I’ll keep that in mind


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[BradyT88]

JBM has a list of some bullet lengths. Using that I found that the Hornady .451 230 XTP is 0.003" longer than the Sierra 240 gr JHC. Using that knowledge I figure at the Same COAL for the 2 bullets you will have pretty similar case capacity and the load data should be almost interchangeable, other than using a little caution on the max side since the Sierra is 10 grains heavier, but when you are talking 200+ grain bullets I figure a 10 grain change isn't much.

I was able to load up a bunch of 45 ACP with these 240 gr bullets and Ramshot Enforcer and had pretty good results and was very near the book velocities for the Hornady XTP's. I plan to do the same thing with my 460 Rowland at some point, but with Power Pistol and AA#7.

I'm no reloading expert so maybe I am missing something important, but I would assume that for same cartridge, same weight of bullet and same base design, but different lengths of bullet, you would get pretty close to the same performance when they are seated to the same case capacity. For example same I have 2 bullets that are both 230 grains and 1 is a flat point and 1 a hollow point. I would assume that the hollow point would be longer than the flat point. Let's say it is 0.050" longer. So I would assume that seating the flat point 0.050" deeper than the hollow point would result in the same case capacity and should be the same velocity. This is all assuming you at measuring to the tip of the bullets and not using something to measure from the ogive or some other part of the bullet.

http://www.jbmballistics.com/ballist.../lengths.shtml

[Mambochicken]

Sweet mercy, that’s almost exactly what I wanted to find! Oh man, that’s going to help me out a ton.

And I’m going to start working on my 460 loads with the 200 gn hollow points as well. I’m going to start with power pistol and see how it goes. I don’t need these to be peak power rounds, just got enough to work as plinking rounds so I can let friends try the gun out without breaking the bank.


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