using duplex loads question.

You still haven't answered the question, though, and I'm dying to know, what cartridge and what gun are you shooting?
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I am using a Pedersoli Sharps rifle..In 45-70 of course with 535 grain postell cast 20-1

All I am after or loking for is a load to make it burn cleaner....I no longer compete except against myself...Thanks for all your information...
 
Think of duplex loads as ignition augentation
Click to expand...

If anything, I feel it's the smokeless that needs a kick from black powder to get burning, not vice versa. In large artillary, such as the 16" naval guns, a 2 kilogram bag of black powder goes between the 600 pounds of smokeless powder and the primer to kick off the smokeless charge if I remember correctly. The black powder charge acts as a booster for the primer.
 
Little bit different scenario when discussing big guns and their powders, and one that's really not applicable to small arms.

In large guns the black powder booster is used because its simply not possible to ignite that much smokeless powder evenly with a simple primer.

At one time experiments were tried using smokeless powder boosters, but they had undesirable effects that required a lot of ancillary testing to get the booster and the main charge synched up, plus the ignition temperature on smokeless tends to be a lot higher.

Using black powder made the whole process a lot simpler from a controlled ignition stand point.
 
Using UNIQUE to make something burn cleaner! UNIQUE!
How do you know BP is filthy? UNIQUE makes it cleaner!

What are you saying here..Is it a riddle or what....more likely WHAT..LOL
 
If my only choices for reloading were black and Unique I'd use black for everything. If I'm going to have the dirtiness of bp I want the smoke too.
 
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