My New Mold

Started by Steve4102, November 13 2012 04:32:54 PM MST

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Steve4102

    Lee 175gr TC converted to HP.
Can't weight to give it a try.


sqlbullet

Looking forward to hear a report.  I have long considered doing this to a mold.

Yondering

Nice! I assume that's from hollowpointmolds.com? Any idea what weight it's supposed to cast?

If you use a traditional lubersizer (Lyman or RCBS type) you might have issues with that bevel base allowing lube under the bullet. There are a couple different solutions for that if you need...

Steve4102

  Erik said is should cast about 165gr with straight WW.  My plain Lee mold cast at 180gr with WW, so 165 might be a pretty accurate guess..
I don't have a Lubersizer, I'm new to casting and so far all I have used is Lee Alox.  That's not going to be  problem with the HP is it?

The_Shadow

Well I posted over  at GT so I'll repeat myself here too!
Steve4102, the mold looks great, Erik does great work. Just be gentle as you work with the mold, while cutting the sprues and ejecting the finished bullets, aluminum LEE molds can be knocked out of alignment or warped if subjected to too much while they are hot.

The finished bullets should be in the 150-156 grain weight.

Best regards!
The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
NRA Life Member
Southeast, LoUiSiAna

Steve4102

  What do you recommend to lube this mold?  Lee Alox stick or something else?

Yondering

#6
delete, double post

Yondering


If you don't have a lubersizer, and plan to shoot these faster than 1,000 fps or so, I'd recommend either pan lubing or dip lubing. Either method is done using a traditional beeswax based lube, everyone has their favorite type of lube, I like TAC and TAC#1 best myself. Pan lubing involves setting a bunch of bullets in a pan of melted lube, so the lube comes up past the grooves, then pulling or pushing the bullets out when the lube is cooling or cooled. Dip lubing is simpler, you just dip the base of the bullet, up to the lube groove, in melted lube. Thickness of the lube coating is controlled by lube temp and how long you hold the bullet in it.

For either method, I recommend a Lee push through bullet sizer to run the bullets through after they are lubed. With both methods, when done right, your finished product will be indistinguishable from bullets lubed in a lubersizer, and will work just as well or better. (Possibly better because the Lee push through die sizes straighter than most lubersizers.)

Of course, you can pick up a used Lyman lubersizer for less than $100, keep an eye on the castboolits forum or ebay.

If you're just shooting these for plinking loads, and keeping velocity low, the Lee tumble lube or the 50/50 paste wax/LLA mix should work fine. I have not been able to get satisfactory results from Alox in full power 10mm loads.

Hope that helps. I'm interested to see some results from that mold when you get a chance. Matching the bullet alloy to your bullet and load is a whole different discussion we can get in to when you're ready.

sqlbullet

Steve, I have had good luck with 175 grain bullets loaded to max in 10mm using the 45/45/10 recipe.  This is still a tumble lube recipe, but is less tacky and handles higher velocity.

It cannot be over-emphasized that your bullets must be a minimum of .001" larger than groove diameter or you will have leading.  You may still have issues.  This mix works well for some guns but not others.

The_Shadow

#9
I think he was looking toward something to make bullet release from the mold easier...after I mentioned about care of the mold with use.
http://www.midwayusa.com/Product/763758/frankford-arsenal-drop-out-bullet-mold-release-agent-and-lube-6-oz-aerosol

I haven't used this product but others have had good results.

Another product is called "Bull Plate"  http://bullshop.gunloads.com/
The Bullshop makes a lube for moulds called "Bull Plate Sprue Plate Lube" and it is highly regarded in some circles.
This one is used to help lube sprue plate and pins to prevent issues, again I don't use the product.
The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
NRA Life Member
Southeast, LoUiSiAna

sqlbullet

Best mold release I have found is "lee-menting" the mold.  Here is how I do it:

Cast a couple of good bullets from the mold.

Drill a small hole in the base and put a stud in the whole fashioned from a wood screw.

Chuck this bullet with a wood screw shank into a drill, and coat liberally with toothpaste.

Gently place the slug back in the cavity of the mold and start the drill slowly, allowing the bullet to polish the mold cavity.

I generally slowly work until the mold fully closes, then put the spurs to the drill for 30 seconds or so.  After this, thoroughly clean the mold and then re-lube the hinge, sprue plate and alignment pins.

Once i treat my Lee molds using this method they generally drop bullets when the mold opens.

Yondering

#11
The method sqlbullet describes for lee-menting works well. If you have steady hands and good eyesight, you can also just trim the burrs off the edge of the mold cavities with a sharp knife, and skip the leementing. If you look/feel carefully, you'll usually find that each cavity has a burr along one side, caused by the direction the tool bit was turning. Takes a bit of precision though to clean it up right.

For lubing the mold itself, I use Bullplate, which is no longer available, but an equivalent product is available from Randyrat on the castboolits forum. This stuff is used on the bottom of the sprue plate, around the hinge, top of the mold blocks, and the mold alignment pins. Don't get it in the cavities.

I don't like that mold release stuff; it makes the mold cast a little smaller. I do smoke all of my mold cavities with a Bic lighter, this just makes them fill out better and easier, with no ill effects.

Steve4102

  Thanks.

Yes, I was referring to lubing the mold itself and the Lee instruction video found here.

http://leeprecision.com/bullet-casting/

sqlbullet

All the serious casters swear by Bull-plate for mold lube.  I have never used it.

I use 2 cycle engine oil on a cotton swab.  The oil is designed for high temp environments.  I get the mold clean with soap and water, then get it hot.  I dip the tip of the swab and the press out all the excess.  Rub the swab on the bottom of the sprue plate, the alignment pins and then put a drop on the hinge.  Works great and if I get a lead smear from cutting the sprue too soon, it wipes right off.

I re-lube the sprue plate and alignment pins at the start of each casting session and again during a long session about every 150 casts.

Yondering

sqlbullet, some on the castboolits forum have speculated that Bullplate lube is actually some sort of synthetic 2-stroke engine oil, so you're probably not far off with what you're using.

I recommend not trying to frustrate yourself by using Alox for a mold lube, as Lee recommends. It doesn't work that well, and is a real pain when it works it's way into the mold cavities.