9mm with how much unique powder - MP-Pistol Forum

9mm with how much unique powder

This is a discussion on 9mm with how much unique powder within the MP Reloading forums, part of the Smith & Wesson MP Forum category; I don't want to take apart any more bullets 500 was way to many the last time. Gun. S&W MP9L pro core Bullet. 147gr rainier ...


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Old November 12th, 2014, 06:00 PM   #1
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9mm with how much unique powder

I don't want to take apart any more bullets 500 was way to many the last time.
Gun. S&W MP9L pro core
Bullet. 147gr rainier trn
Powder. Unique. 3.9?
Question is how powder to use
Thanks bobby


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Old November 12th, 2014, 06:02 PM   #2
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Oops and how long. 1.154?


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Old November 12th, 2014, 08:25 PM   #3
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You should use reloading data for 147 gr lead bullets, I can't find any published data for 147 gr lead bullets using Unique, there is some data for jacketed bullets in my Speer #14, 147 gr jacketed starts at 3.8 gr of Unique. Alliant's online data only shows jacketed data using a new powder they have brought out. There's always less published data for lead bullets, that's just the way it is. If you don't have some reloading manuals, I highly suggest you get several, Speer #14 is a good one, another good one is Hornady's Annual Manual, published yearly in magazine format, so its cheaper than the hard cover books, you can Google it.

By published data I mean data from an established reloading manual, not something I found at Joe's message board posted by some unknown person who might blow up guns every couple of weeks.

Alliant Powder - Reloader's Guide

You could load a small quantity using the starting load and see what those do, for test loads don't make too many since you might need to take them back apart with a bullet puller.

Suggested OAL is 1.125", longer never hurts as long as it feeds and functions.
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Old November 13th, 2014, 04:03 AM   #4
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Lyman has a cast bullet reloading guide. If you shoot lead, get this and use it for lead bullets.

Mine is home and I am not there, or I would get that data for you.
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Old November 13th, 2014, 02:04 PM   #5
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Ok I'll pick on up


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Old November 14th, 2014, 02:32 PM   #6
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Start at 3.0-3.2gn and work up (3.8gn may very well be max and 3.9gn would be over max).
Don't just leap into anything.
Load a couple of inert dummy rounds first to verify they fit magazine, and feed and chamber (or you'll be back to breaking down 500 rounds). Walk before you run.
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Old December 3rd, 2014, 01:08 PM   #7
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I'm using 3.8-4.0gr of Unique with that plated bullet in a 4.25" 9mm.
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Old August 4th, 2015, 03:46 PM   #8
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I use 3.7 gr of Unique with Missouri bullets 147 gr flat point lead bullets. Gives me 970 fps out of a 4.5 inch SIG P226. Been very reliable and sounds great out of my Octane 9. Unfortunately Unique tends to blow a lot of junk back in my face and is pretty dirty with this load.
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Old August 4th, 2015, 04:46 PM   #9
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Get a nice velocometer... This one is what I have...

https://www.youtube.com/watch?v=3NjxFTpZOVY

Takes the GUESS out.
EB
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Old August 4th, 2015, 07:18 PM   #10
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Quote:
Originally Posted by ElevenBravo View Post
Get a nice velocometer... This one is what I have...

https://www.youtube.com/watch?v=3NjxFTpZOVY

Takes the GUESS out.
EB
I think you mean chronograph...
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