Expander size

Brad

Benevolent Overlord and site owner
Staff member
Loading for 9 mm. If I'm using a .357-.358 bullet how big do I want the expander? My Dillon funnel is .352. Makes me wonder if I'm sizing bullets with my brass.

Is it worthwhile to try a .355 expander? I can make one easily enough.
 
F

freebullet

Guest
Could pull one & find out if they are being sized on loading.

Never needed anything more than 356 myself so far. Couldn't get 358's to chamber.
 

Brad

Benevolent Overlord and site owner
Staff member
Mine is very unhappy with a 356. I also tire of mining lead from the bore. A 357-358 is perfect. I even made it a nice 3575 sizer all its own.
 

Brad

Benevolent Overlord and site owner
Staff member
Bullets are being sized down over .001. Not a good thing.
I may need to go to a harder alloy. I suppose I could heat treat what I'm using too?
 
9

9.3X62AL

Guest
I have the great good fortune to have all of my 9mm pistols in-house with throats in the .3565"-.357" ballpark. I size to .357", and the expander spud is .355".

DO NOT leave out the remaining variable--brass make/age/wall thickness. This can be highly variable, and each make needs to be dealt with as a unique "population". I use only R-P brass these days, since it seems to be the most consistent and easiest to work with. The W-W brass from both my shop's 115 FMJ practice fodder and its 147 grain JHP service loads had impossibly tight primer pockets that would admit no make of primer--and I tried many makes--with anything like ease. Reaming the pocket edge and swaging made no difference--TOTAL PITA. It was free, but not worth the price of admission when you factored in the aggravation. I bought a couple 500-count lots of bulk R-P from Midway USA back in the days when they were available, and Life With 9mm got MUCH easier.
 

Brad

Benevolent Overlord and site owner
Staff member
Win brass is a pain to prime in 9mm, I have discovered that.
I should probably bite the bullet, so to speak, and just buy a few K from Starline and have all matching headatamps.
 
9

9.3X62AL

Guest
My next lot of 9mm brass will very likely be Starline as well.
 

RBHarter

West Central AR
Weird .
I don't have any trouble at all with Win . All of my keeper brass in 9 ,40 and eventually 2-3 45s .
I find FC to be soft and Remington left a bad taste after a 60 pieces of 1 lot of 06' varied in weight from 189-207 gr and showed up case volume induced fliers in to the next county from factory loads in a rifle that changes weights and brands with only inches of shift at 100 yd usually vertically .
 
9

9.3X62AL

Guest
Oh, I hear ya. I went at that W-W 9mm brass with a mind toward MAKING IT WORK, come h--l or high water. I tried every make of primer I could find locally--Fed 100, Rem SP, CCI 500, WSP. I reamed the pocket edges with a counter-sink in a drill motor. I used the RCBS primer pocket swager (meant for de-crimping mil-spec brass). No love whatsoever. I was ON A MISSION. And......EPIC FAIL.

Remington 9mm has behaved well for me in my pistols. Other folks' tools, or guns, or skill sets might be able to make that W-W brass work for them, but it was beyond me.
 

Brad

Benevolent Overlord and site owner
Staff member
I love Win rifle brass but the 9mm cases are a pain.
 

Cherokee

Medina, Ohio
My experience with Win 9mm brass has been fine. I've loaded something like 35k Win cases with cast. Sometimes to takes extra pressure to get CCI SP primer seated flush but no big deal. I use a .354 spud and run it deep into the case so the .356 bullets I use are not resized. I also use a 3/3/94 alloy for the 9's. I have found RP brass hard to expand using the .354 spud. FC cases expand fine with the .354 spud.
 

Brad

Benevolent Overlord and site owner
Staff member
Getting deeper expansion was a part of what I was looking for. The new expander goes deep enough to ensure the entire bullet seats in an area that gets expanded.
 

Brad

Benevolent Overlord and site owner
Staff member
With the Dillon powder funnel it is a matter of getting the expander just deep enough at the same point the taper is flaring the mouth. I found the stock funnel was a little short in this section and smaller than I wanted.
I now expand both deeper and .003 larger.
I'm not overly worried about bullets seating deeper on cycling as the expanded section is just to the bullet base so the bullet will have some work to do to get deeper.
 

fiver

Well-Known Member
I switched to my 38 special funnel.

I bet a little harder alloy will help.
I shoot 358 and add lino to my ww alloy for the 9mm's. [it doesn't seem like enough to matter at 8-1 but it did]
it just seems to work better, and it isn't all about BHN, some of my slowest rifle loads shoot the 'harder' of my alloys the best on target.
better than the water dropped soft alloy, better than the softer alloy air cooled, better than the harder alloy water dropped.
 

Brad

Benevolent Overlord and site owner
Staff member
I think a harder alloy would help a bunch. Not to difficult to mix something up and set it aside for just 9 mm.