9mm reload

fordrulz · March 11, 2016, 06:34 PM

Hi im new to the reloading gig and made my first rookie mistake. I bought a box of small pistol primers to reload 9mm and was so excited when I got home I primed up 250 cases. a few days later I went back to de-prime and resize some more brass and noticed I was handed small pistol magnum primers! I did not notice this until it was too late, My question is can there magnum primers be used in a 9mm load with a lower charge? I have tight group powder and 115 grain x-tream bullets jacketed. I have ONLY primed the cases at this point. thanks for any help!

BillM · March 11, 2016, 08:02 PM

You will gain maybe 15 feet per second, and if you were to chrono
the loads you would probably notice that extreme spread and
standard deviation was smaller with the magnum primers.

I'm going to assume that your x-treme bullets are plated, not jacketed--
you should be using lead bullet level charge weights. Should be fine,
but drop your charge maybe .2 grains if you want to keep the velocity
the same as standard primer loads.

When primers were hard to get I ran 20,000+ 9mm loads with small
magnum primers--and didn't change anything. No problems.

Average Joe · March 11, 2016, 08:37 PM

Use them, you won't even notice the difference.

fordrulz · March 11, 2016, 08:39 PM

Yes they are plated, my bad. Thanks for the great info!

Nick_C_S · March 12, 2016, 07:30 PM

Quote:

Use them, you won't even notice the difference.

Yeah. I agree. You're fine.

It's an easy mistake to make. I think I may have done the same once. But the situation does speak to the craft of ammunition handloading and the importance of checking and re-checking. Read your labels closely - primers, powders, and even bullets.

I when I load, I even keep the powder being used prominently displayed on the load bench - label facing toward me. I read it several times while loading. I look at the scale setting (balance scale) bunches of times - even after I'm though charging. I even state the recipe out loud several times (e.g. "6.1 grains of Titegroup") as I'm preparing the load bench.

Which, by the way, is what I should really be doing right now: Loading 44 Special with 200gn plated FP's, and 6.1gns of TG under them.

hartcreek · March 12, 2016, 07:57 PM

I have a couple thousand .40 cal cases sitting in a tray that I primed with magnum primers because I was planning on using a powder that required them. I will be loading the cases with a different powder it wont make any difference so I ain changing the primers.

March 11, 2016, 06:34 PM	#1
fordrulz Junior Member Join Date: March 11, 2016 Posts: 2	9mm reload Hi im new to the reloading gig and made my first rookie mistake. I bought a box of small pistol primers to reload 9mm and was so excited when I got home I primed up 250 cases. a few days later I went back to de-prime and resize some more brass and noticed I was handed small pistol magnum primers! I did not notice this until it was too late, My question is can there magnum primers be used in a 9mm load with a lower charge? I have tight group powder and 115 grain x-tream bullets jacketed. I have ONLY primed the cases at this point. thanks for any help!

March 11, 2016, 08:02 PM	#2
BillM Senior Member Join Date: January 20, 2009 Location: Amity Oregon Posts: 791	You will gain maybe 15 feet per second, and if you were to chrono the loads you would probably notice that extreme spread and standard deviation was smaller with the magnum primers. I'm going to assume that your x-treme bullets are plated, not jacketed-- you should be using lead bullet level charge weights. Should be fine, but drop your charge maybe .2 grains if you want to keep the velocity the same as standard primer loads. When primers were hard to get I ran 20,000+ 9mm loads with small magnum primers--and didn't change anything. No problems.

March 11, 2016, 08:37 PM	#3
Average Joe Senior Member Join Date: August 29, 2005 Location: Central Florida Posts: 1,325	Use them, you won't even notice the difference.

March 11, 2016, 08:39 PM	#4
fordrulz Junior Member Join Date: March 11, 2016 Posts: 2	Yes they are plated, my bad. Thanks for the great info!

March 12, 2016, 07:57 PM	#6
hartcreek Junior member Join Date: April 22, 2014 Location: Washington Posts: 1,549	I have a couple thousand .40 cal cases sitting in a tray that I primed with magnum primers because I was planning on using a powder that required them. I will be loading the cases with a different powder it wont make any difference so I ain changing the primers.