CM9 on the way, gotta load up some ammo

[dirtengineer]

Here is the load data that I have:
Source - Winchester out of the "Complete reloading manual for the 9mm Luger"
W231 for 124 grain FMJ 4.2-4.5 grains
W231 for 124 grain LRN 3.3-4.0 grains

Source - Lee Modern Reloading second edition
W231 for 124 grain jacketed 4.2-4.5 grain
W231 for 124 grain lead 3.3-4.0 grain

I am not familiar with that brand, precision delta. Rainier bullets says to use lead bullet data or to reduce jacketed data by 10% for their plated bullets. They used to have data on their website (I have a pdf copy) which is what I was quoting before. Berrys says to use middle of the road load data.

I know that load data can be all over the place. I don't have a Hornady book, but I do have Hornady data in my universal 9mm book, and it doesn't list W231 for 124 grain bullets. If the Hornady book shows you are ok and you don't have signs of excess pressure, I would check the velocity with a chronograph as a last step. If the velocity is reasonable and fairly consistent I would still use the load if it was reliable and accurate. My favorite load in .380 is in this category where it is above max for one source and below max in another.

[guido4198]

A coupla quick points on published loads in manuals:
Be advised that some powder formulations have been modified over the years by the manufacturer. Even if the actual formulation hasn't been altered by the manufacturer...there can be differences observed from lot-to-lot. None of this matters much if your chosen load is in the low to middle part of the published range. It CAN make a difference however if you want to work in the upper end of the safe range...even up to MAX loads. In addition of course...every firearm is different. This is why EVERY responsible, experienced reloader will ALWAYS advise that you start out "well down" in the recommendation table of charge weights, and WORK UP.

[Ikeo74]

Go here for load information on W-231 right from the horses mouth.

http://www.wwpowder.com/

Use 125 gr data for 124 gr loads.

[Tilos]

What Ikeo74 said...
The difference of load data from manuals can be eliminated by using data published by the powder manufacturer.
Hodgdon's website is a good source for winchester powder info because they make it.
http://data.hodgdon.com/main_menu.asp
or
http://www.alliantpowder.com/default.aspx
or
http://www.handloads.com/
or
http://www.ammoguide.com/

But this is not benchrest...unless you try and make it benchrest.

Tilos

[U.S. Patriot]

This is my 9mm load

4.2 grains TiteGroup
CCI #500 primers
Winchester 115 grain FMJ bullets
COL 1.130"
They cycle in all of my 9mm pistols.