Author Topic: Hollow pointed a mold today  (Read 8862 times)

Offline Antman

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Hollow pointed a mold today
« on: March 04, 2012, 07:46:32 AM »
I hollow point an old Lyman single cavity mold that seldom got use today. It is a 358156 with a short gas check groove. The plan is to cut out the gas check groove eventually, but the hollow pointing was also part of the plan.

I got the idea over at Cast Boolits (great site for casting),so I can't take all the credit.

These were a few quick test casts, the mold was not hot enough so it didn't fill a perfect yet,


Here is the cutting on the mold, centered in the cavity, a 3/16 hole through, care must be taken here. I made a bushing that centered the drill in the mold to keep everything in line.


Here is the pin, this one is fairly shallow, but a new pin or even a blunt pin so it will not be hollow point can be made,


Well there it is, my preps for yesterday, a lifetime supply of hollow points. All was done on a tiny bench lathe and a small bent top drill press.

Antman

Offline sukivel

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Re: Hollow pointed a mold today
« Reply #1 on: March 06, 2012, 01:23:59 AM »
I've considered casting bullets in the future. Is it really worth doing? Or is it more hobbyish? Can you cast for any caliber? How long does it take to cast, say, 100 bullets?


Offline cohutt

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Re: Hollow pointed a mold today
« Reply #2 on: March 06, 2012, 04:22:06 AM »
Nice work.

I have several molds including a couple of hollow point ones I picked up in castboolits group buys.   

Why ditch the gas check?  with 357mag it ought to come in handy for full loads.

sukivel, go to cast boolits forum and poke around a bit- the answer to all of those questions is "it depends",

Offline backwoods_engineer

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Re: Hollow pointed a mold today
« Reply #3 on: March 06, 2012, 08:13:11 AM »
Well done!  Nice machine work here.

I am planning to get into casting for my revolver, so I will consider this, too.  Looks fairly easy for someone with access to milling and drilling machines (like me).

Offline Greywolf27

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Re: Hollow pointed a mold today
« Reply #4 on: March 06, 2012, 08:23:24 AM »
I've considered casting bullets in the future. Is it really worth doing? Or is it more hobbyish? Can you cast for any caliber? How long does it take to cast, say, 100 bullets?

It is FAR cheaper then FMJ projectiles.  A few years ago, I was molding bullets for 38/357, 44 and 45LC.  I did a cost analysis, the 38's ended up costing me about $.06 per complete round.  The projectile and powder is negligable... .0002 cents per projectile... or something like that (my buddies pops had 200-300 lbs of lead)  The main cost came from the primer. 

Note: the load I was batching was <900 fps and I was not using gas checks.  The initial set up (like with all projects) has a fee to it, but I think if you do a lot of shooting, molding your own will definately cut down the cost of shooting.

Offline Antman

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Re: Hollow pointed a mold today
« Reply #5 on: March 06, 2012, 04:08:39 PM »
Thanks for the kudo's.

As far as casting being worth it or a hobbish thing, let me put it this way. I have not shot a jacketed or store bought boolit in over ten years. For the 9mm I can cast 4/500 heads an hour out of a six gang Lee mold that cost me 35 bucks I think. I use a gas burner my dad got thirty years ago at a yard sale and a cast iron pot. No bottom pour furnace. Just a good Lyman pour dipper. I have never bought lead either. only boolit lube and that can be made yourself fairly simply. The 9mm's cost me about 60 bucks a thousand to reload. Thats 60 a thousand. Primers and maybe 3/4 a pound of powder And they will group into 1.5 inches at 50 yards out of my carbine.

The lead comes from range scrap melted into ingots, and I will scrounge for wheel weights, or solder or linotype when I find it. I enjoy the ability to create custom loads that are un-avialable anywhere.  How about three 75 grain wadcutters in a 357 case for a load like a 410 judge type effect? Or a heavy 180 grain cast load that will only cost you a primer and powder. Less bore wear and typically faster velocity do to lead's lubricity.

Cohutt,

As far as the check, the head is more for mid range type snubby loads. 1100-1200 fps is fine with no check. I run 168 Keith 358429's that fast with no leading. And I'm cheap, I save the checks for my 357 Max or 35 Remington.

Antman

Offline cohutt

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Re: Hollow pointed a mold today
« Reply #6 on: March 06, 2012, 08:44:34 PM »
I have a couple of 44 mag gas checked molds - I find those hurt my hand or shoulder more than the non checked for some reason.  ;)

I have gotten velocities upwards of 1450 fps with 440g soft alloy unchecked 45-70 bullets before.  It is all about the fit.

Good to know another bermining lead whore in in the forum; I had some epic scores back when i worked on it diligently. 

I haven't done a lead porn flush out post in 3 or 4 years so what the heck:



















































Offline sukivel

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Re: Hollow pointed a mold today
« Reply #7 on: March 07, 2012, 02:25:12 AM »
FAR CHEAPER...okay, now we're washing the same goat. I do, of course have questions.

Went to the castboolits website. Lots of good info, but also a lot going on there.

1 - When do I need gas checks?

2 - Do I need to size? If so, would I need a Lyman/RCBS lubrisizer, or would a Lee 7/8-14 sizer work good enough?

3 - Is the Lyman book the one I need to get started?

4 - When looking at moulds, how do i size them per caliber? i.e. for .308WIN, do I use .309 mould? OR?

Over at castboolits, they seem to use cast for everything, not just plinking. What are you guy's thoughts on cast for hunting. I really don't care what the projectile is, as long as it put's holes in game, paper, and soda cans.

Antman,
Is it really as simple as heating lead in a cast pot over a propane turkey fryer stove, and using your Lyman dipper and dipping into a mould? That sounds frugal and easy.

Thanks again for any help or links. Yeah I'm really getting into this...famous last words...
« Last Edit: March 07, 2012, 05:19:28 AM by sukivel »

Offline Antman

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Re: Hollow pointed a mold today
« Reply #8 on: March 07, 2012, 02:44:05 PM »
Sukivel,

Some people use electric bottom pour furnaces for casting. I early on tried a home build bottom pour set-up. I found that it is actually faster for me to use an open cast pot, on a turkey type burner. I use a Lyman laddle, RCBs makes one as well, then there are nicer ones like the Rowell ladles. All you are trying to do is get the lead to 700ish, keep the mold close to that temp and pour away. There are times when it can be frustrating. I have been casting since I was a kid with my old man. A mold that is dirty or has oil in it can cause wrinkles. not enough tin in the mix can cause fill out problems. Hot molds can cause frosting. But really, it isn't that hard.

If you want to try it, you can get a Lee double cavity mold for less than twenty bucks, get a mid sized cast iron pot( one that I use is just an old two quart cast iron sauce pan!) and a gas burner.

For cleaning range scrap and casting it into ingots for future use, the same pot and a muffin pan will work as an ingot mold.

BUT BE FORE-WARNED,,,,,  DO THIS OUTSIDE WITH GOOD VENTILATION !!!!!
the fumes can be hazardous,,,, but with the right set up it is perfectly safe.

Look at CAST BOOLITS, magazine articles and other sources. Take your time and don't think you need to spend a ton of money to set up.

Any specific questions, feel free to PM me.

Antman.

Offline cohutt

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Re: Hollow pointed a mold today
« Reply #9 on: March 07, 2012, 05:49:12 PM »
a good resource, a little more manageable than the whole cast boolits forum:

http://www.lasc.us/CastBulletNotes.htm

Offline sukivel

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Re: Hollow pointed a mold today
« Reply #10 on: March 08, 2012, 04:15:47 AM »
http://www.lasc.us/CastBulletNotes.htm - this is a great website!

Antman...I am going to try casting like you stated.

Do I need gas checks? I want to cast for 7.7 Jap and 6.5 Jap starting out.

Do I need to size? Any thoughts on the Lee sizer kit's? How do I pick the sizer to caliber, is it .001 over bore?

Thanks again!!!

Offline Antman

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Re: Hollow pointed a mold today
« Reply #11 on: March 08, 2012, 02:44:55 PM »
Sukivel

I have not cast for those calibers, It appears a 7.7 could use a .311 boolit, but you'll have to do your own research there. Either one should have a gas check UNLESS your are going to run a reduced load. Then I don't think you'll find a non gas check mold for those easily, and a gas checked design is not to pretty good without a check in place. Gas check should be used over say 12-1300 fps. Maybe a little faster but not in the 1800 plus range that most rifle loads are.

I would recommend you begin casting for something a little more common at first, like 357mag or 35 remington or 30-06. Getting into old military stuff can be funny as those bore sizes can be odd. Bore size is VERY important in cast boolit shooting. You should slug the bore and size to that or over by .001-2. Otherwise you can get leading and accuracy problems.

So as far the sizer question, you need to slug your bore to get the correct size. Google how to, basically oil the bore and drive a lead slug to get an accurate representation of the bore.  I use a wooden dowel to slug, Don't score the bore with a cleaning rod or something crazy!

The Lee sizers are ok, I use an old Lyman 450 sizer myself, it a little quicker and it was a hand-me-down.

I really would recommend starting with a more common caliber first. There are more molds available that have proven themselves for decades.

Hope this helps.

Antman

Offline sukivel

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Re: Hollow pointed a mold today
« Reply #12 on: March 10, 2012, 11:34:41 PM »
Great info! I actually have a Lee .357 sizer, but I don't have a 38/357 yet. I do have a 35 Rem. I will try something more common...that makes sense. So do you recommend investing in a lubrisizer?

Offline Antman

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Re: Hollow pointed a mold today
« Reply #13 on: March 11, 2012, 07:35:16 AM »
Sukivel,

If you are going to start with a 35 Rem cast load, you could get a Lee Tumble Lube mold and either size to 357 with your kit or shoot the as cast and use the Liquid lube that came with the sizing kit. I load for the 35 in my Contender and like a 150ish grain round nose for reduced loads. I got a load from CAST BOOLITS that is a sweetheart in the TC. Not a full house load but a good plinking/small game load for the 35.

PM me for more info.

Antman