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  #1  
Old 09-04-2013, 06:49 AM
Irv S's Avatar
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Question Bullet Weight, Powder Charge, Velocity ?


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Are there any tables or graphs available showing the relationships between powder charge (Black, pyrodex, Triple 7, etc) and bullet weight with muzzle velocity by caliber for muzzleloaders?
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Old 09-04-2013, 08:20 AM
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IrvS,

The only information I can think of is the data by caliber and powder charge in the Lyman Black Powder Handbook. The next step is what I did: I got an RCBS chronograph and set it up on my backyard range.

Webley
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Old 09-04-2013, 09:02 AM
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Quote:
Originally Posted by Irv S View Post
Are there any tables or graphs available showing the relationships between powder charge (Black, pyrodex, Triple 7, etc) and bullet weight with muzzle velocity by caliber for muzzleloaders?
Yes. As noted....Lyman, among others.
Sam Fadala has published such data.
Pete
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Old 09-04-2013, 10:03 AM
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Some of the bullet manufacturers and even the powder makers have the most "common" used bullet and different powder charges, listing the energy and velocity. You can try checking on them.
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Old 09-04-2013, 12:48 PM
Irv S's Avatar
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Thanks. After reading the above I went and bought the Lyman Black Powder Handbook. It appears to have what I want.

I decided to try a different bullet for this year's muzzleloader season as I had a "Power Belt" blow up on the shoulder of a deer last year and this year I have both deer and elk muzzleloader tags. Yesterday I shot 3 of the "No Excuses" 460 gr 50 cal bullet over 100gr of Triple 7. The recoil was worse than my 375 H&H and IMO more than enough for anything in North America and more than I want to endure. Also I could not raise the rear sight sufficiently for the trajectory, so I decided I needed to do some research on bullets and loads. I'm somewhat concerned about the adequacy of .50 roundballs for elk. I used "MaxiBalls" years ago with good success in my .54 cal, but am having trouble finding them in .50 cal and "MaxiHunters" were not accurate in my .54. So I'm looking for alternatives to the "PowerBelts" for my .50. If I can't find something for my .50 in the next 2 weeks, I'll dust off my old .54 Renegade.

edit. Just received an email from "No Excuses" saying I should lower my powder charge and that 75 gr of triple 7 was equal to about 100 of Pyrodex. Thankfully the TC Omega is strong (rated for 150 gr Pyrodex).

Last edited by Irv S; 09-05-2013 at 07:01 AM. Reason: add info
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Old 09-05-2013, 12:34 PM
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If they don't work for you, consider a Thor Conical. They are all copper like a Barnes. They expand beautiful and are usually very accurate out of fast twist rifles. Unless it has to be a lead bullet.
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