Powder coating is different than Hi-Tek coating.
Two coats to ensure complete coating using the much easier method. You don’t cast them undersize, you just size them to the diameter you want after coating.
There are also “shake and bake” powder coat methods, castboolits has many threads on the subjects (both powder and hi-tek coating).
Yes, there is complete coverage. With Hi-tek you can actually melt the lead inside the coating completely and it will hold it until you poke a hole in it.
Zero. You just need soft lead, pipe and shielding are good sources easily found at recycling centers and junk yards. Linotype is high in antimony the most common and efficient way to harden lead.My best friend, who lives one province away but is going to visit me in August, used to cast bullets but not anymore. He has what he describes as a veyr large supply of linotype left from his casting days. He is going to give it to me when he visits in August!
So, I'll need to figure out how much Tin and Antimony I will need to create a softer alloy more appropriate for the 45-70 buffalo rifle!
Jim G
Zero. You just need soft lead, pipe and shielding are good sources easily found at recycling centers and junk yards. Linotype is high in antimony the most common and efficient way to harden lead.
Thank-you, 243winxb. I checked out the links in the album! Important details there.https://www.thehighroad.org/index.php?media/albums/casting-bullets.310/
Always check bullet diameter as they drop from the mold & after sizing. The alloy used can make a big difference. Antimony rich alloys make bullets lighter, harder & larger in diameter.
My best friend, who lives one province away but is going to visit me in August, used to cast bullets but not anymore. He has what he describes as a veyr large supply of linotype left from his casting days. He is going to give it to me when he visits in August!
So, I'll need to figure out how much Tin and Antimony I will need to create a softer alloy more appropriate for the 45-70 buffalo rifle!
Jim G
There are casters who would gladly trade lead for some of your linotype. Finding one nearby - or one willing to pay for shipping - might be a trick, but it's something to bear in mind.
So, I'll need to figure out how much Tin and Antimony I will need to create a softer alloy more appropriate for the 45-70 buffalo rifle!
When you water quench, they are ready to weigh immediately. What's your plus or minus on weight to consider a batch good.One of the easiest ways to know how much to mix in is to weigh the bullets that drop.
I have one mold that I use as my “standard” with certified lead it drops 230’s. Pure lead it drops 240 grain bullets. Silver solder drops 210 grain bullets. Wheel weight lead drops 232 grains and that’s close enough I generally don’t mess with it but will mix in Linotype to pure lead until they weigh right.
Welcome to the world of casting! You have received lots of good suggestions and info above. I can't think of very much to add but I will touch on a few things.
Alloy: before you spent a lot of money on tools and molds I suggest securing a source for alloy. Scrap has served me well but can be hard to obtain in some areas. New alloy is expensive but new clean alloy is a joy to cast with.
Flux: I cast using scrap, mostly clip-on wheelweights. Scrap can be dirty so I melt it in large batches, 400# or so, and I flux it using sawdust. It seems like Pine works about the best. When I flux my casting pot I use wax, usually from candles. I don't put dirty scrap in my casting pot.
Hardness: Don't get too hung up on hardness. In my opinion fit is more important than hardness. Clip-on wheelweights serve me well for magnum pistol cartridges and for my 45-70. Their hardness is in the 10-12 BHN range.
Sizing and lubing: I'm still old school and use a sizer/lubricator. I use hard lube so I have to use a heater. If I were not so heavily invested in these tools I would look at Powder Coating.
Safety: The only thing I can add is be careful adding cold alloy to already melted alloy in your pot. If any moisture is present you can have a steam explosion. (The Tinsel Fairy)
Good Luck and enjoy your casting.
My dad was old school, cast a ton of bullets.
Sold em at gunshows way back, they were reportedly top notch.
Sizing and lubing was done on a Lyman sizer, loved the smell of the lube.....dunno what it was called.
He never powdercoated.
Quit selling at shows years ago.
When he passed....there were big ammo cans full of bullets, .45 colt .45 acp and .357...........never sized em.
He didn't do em for sale.
The old boy would just get in a casting mood and go out, listen to the radio in the garage and make boolits.
He absolutely loved it.
Men find happiness in individual ways.
I get my bullet lead from my gun club pistol range berms free, melt it down on an old Colmen camp stove in a stainless-steel pet dish, flux it good and pour it into a Lyman ingot mold for storage. When casting bullets, I have a Lee bottom pour melting pot and several Lee two cavity molds. Have fun and be care full. I recommend the Lyman Cast Bullet handbook.
Hi-tek came a few years before powder coat. Using powder coat is "new". The first reliable method without an electrostatic gun was only figured out in 2014. Here is a link to a thread that gives you some history:
https://castboolits.gunloads.com/sh...d-to-the-shake-n-bake-powder-coating-pioneers