Custom Seating Stem

I would suggest JB Weld Steel or Quick Steel.

Can't imagine hot glue would last, so ya JB Weld might work.

My "concern" is how do you ensure that it is "square," so you don't have it off center. Seems that having a well-fit seating stem that is off center would defeat most of the reason to have a custom seating stem.
Personally, most of my custom seating stems are made by Lee for not much money.

Epoxy here. Made a few flat seaters. I filled the seater and then sanded it flat. I used sandpaper on a piece of granite counter top, so it is quite level. I find the flat seater does most pistol bullets that I use very well!

Works like a charm. No more rounded off 10mm gold dots for me lol.

If you have a drill press, you can chuck the seating stem in the press, and after putting a dab of epoxy inside the cavity, run it down on top of the waxed bullet to get a good square fit. Of course, you would do this without turning on the press............. Just use the press and the flat surface of the press table to get good alignment and then trim off the excess.

Hope this helps.

Fred

I thought I saw some custom seating plugs in the latest Redding catalog. It was only a few for match bullets only.

OP always has the option of buying "custom" seating stems but that's not what the OP posted for this thread.

Some of us like to "tinker"

ArchAngelCD said:

custom profile bullet seating stems ... looking for an easy way to modify existing stems

Click to expand...

bds wrote:
OP always has the option of buying "custom" seating stems but that's not what the OP posted for this thread.

Click to expand...

The OP also said, "Any suggestions are welcome..."

ArchAngelCD wrote:
I don't own or have access to the machinery to fabricate new stems...

Click to expand...

Contact the manufacturer of your dies. Not long ago. RCBS and Lee would modify their stock stems for you if you send them the bullets and a modest fee. I assume they still offer this service.

ReloaderFred wrote:
If you have a drill press,...

Click to expand...

It has to be a quality drill press. The $39 one I got from Harbor Freight that basically just holds a wire wheel has so much play that I wouldn't trust it to be square.

ArchAngelCD,
I have made "custom" seating stems like this:
https://www.thehighroad.org/index.p...ating-stem-modifications.780903/#post-9917594
I have Lee dies so the "stock" stems only cost about $7 each, besure you get correct stem for caliber of bullet you are making a "custom" stem for
By the way, plug the hollow point bullet or it will stick to your new stem (don't ask how I know


Bullet Seating Plugs

Starting with a Lee bullet seating plug, I drill the end deep enough that the bullet ogive rests on the rim of the hole in the plug. I use one of the paste type 2-part epoxies that come in a tube. After I mix up the epoxy, I fill the hole I drilled in the end of the plug level with the end of the plug. I coat the bullet with white grease as a mold release and insert the bullet tip into the epoxy which will ooze out around the bullet. The trick to keeping the bullet and plug in alignment is to clamp them between the jaws of a good vise. Because the bullet bottoms on the ogive instead of the tip it will self center, and the jaws will keep the bases of the bullet and plug parallel. Once the plug and bullet are held securely in the vise, you can wipe away the excess epoxy that has oozed our around the bullet. After the epoxy has cured at least overnight, I bridge the bullet on a low metal edge and tap the side lightly with a brass hammer as I rotate the plug until it pops loose. Enough epoxy will remain on the bullet that you probably don't want to try to use it, so I use it for a dummy load for setting up my press.
For hollow points, I stuff the tip with paper to keep the epoxy from getting inside and making it more difficult to separate them.
Hope it works for you.
JD

I made one for belling my 243 cases, there wasn't one in the die set I have. I don't remember the size of the Lee de-priming rod (Solid Steel), I started with, but I cut the bottom of the rod off, that left the rod slightly larger than the 243 case, so I could then load Lead bullets without shaving them. I'm sure a little research would yield the size needed to do something similar.

Dan

I "made" custom seating stems for 9mm and .45 ACP. My dillon .45 stem was making a slight crease in my bullet.

I bought two extra seating stems, roughed up the internal aspect, lubed the bullets with Redding/Imperial sizing wax, and rigged up a setup to keep it square. I used deep wall sockets on a level surface to keep everything level.

I used JB weld for mine.

Here's some pics...in the picture that shows the loaded .45 ACP round, you can see the crease I was getting on the bullet. Customizing the insert remedied that.

I even got nerdy and stamped the bullet specs on the seating stem/insert.

Nice work.

I'll agree with using JB Weld. It is reasonably tough and it is easy to work with. It sands and cuts fairly easy.

The alternate is to get the die manufacturer to make a custom seater.

I've messed with hot glue trying to seat a truncated cone bullet (9mm) in a dillon die. Didn't work. If your bullets tend to start out very straight to begin with, it may work out, but the hot glue is grippy and won't let things slip into place like you want them to.

JB Weld is just epoxy with powdered metal in it instead of fibreglass.
"...seat a truncated cone bullet..." Seats with a regular SWC/HP seater. Been using 'em for eons. A slightly rounded GD isn't going to matter either.
"...belling my 243 cases..." Rifle cases get chamfered, not flared.