There's a couple of different ways to make them just depends on what you want them for. Several years ago I decided to take the plunge and swage bullets for the 223rem's. Wanted to make bullets that could do moa with common free components. So I used free range lead/free 22lr cases/free range brass to test with. I also picked up a beater savage axis to test the loads with. The savage costs $318 out the door and it had a $50 mail in rebate & I sold the scope that came with it for another $50. I put my own scope on that axis, a sightron 24x target dot, never did anything else to it other than clean the bbl & set the torques on the action screws.
Making the bullets:
Cast cores
run cores in bleeder die to uniform the weight
run 22lr cases thru jacket forming die
anneal & clean newly formed jackets
put core in jacket and run them up in seating die
run the seated core up in point forming die & clean the lube off the bullet
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Chose bl-c2 for a powder, it always got moa accuracy with 55gr/62gr bullets in the 25.5gr to 26.5gr load range in any 223rem I've tried them in. This cheap savage was no different.
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That's a cheap rifle with a bs stock that I never even bothered to do anything with the trigger or flimsy stock. Free lead/22lr cases/mixed range brass that I sorted into 2 piles, commercial & nato. The tests above were shot with the free mixed nato brass.
I do make a 58gr bullet also for the blasting ammo for the ar]s/m4's. The cheap m4's do +/- 2 moa with almost any cheap ammo or bullet/reload so I make a watered down bullet for them to turn into blammo ammo/blasting ammo/2 moa ammo for them.
The process:
Cast cores from a 8-cavity mold, doesn't take long to cast a couple 1000 of them
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Form jackets out of 22lr cases
put the cast core in the 22lr jacket and run them up in the point forming die
clean the lube off of the bullet and load them
The end result is a 58gr hp that is more then accurate enough for the 16" bbl'd m4's. It's nothing to make 1000+ bullets in a day when I make them this way.
I know 22cal bullets are cheap enough but it's nothing to get free range lead that I cast other bullets with. The range I go to has a policy that you clean up after yourself when your done, it's nothing to get 1000's of free 22lr cases that have been swept up and tossed in the range buckets. I spend 2 or 3 days in the winter and make up 3000 of the 58gr blasting bullets along with doing another 2000 of the moa 62gr bullets in a couple days. I really don't mind making bullets in the winter, typically most of my casting/reloading is done in the winter months & I shoot all summer.
22cal bullets can easily be bought in balk cheap enough, around $.06 apiece. I'd rather take the $300 I save making my own bullets and buy #16 of powder with the $$$. At the end of the day it costs me less the $.05 a round/$50 per 1000 to reload my own 223rems when swaging my own jacketed bullets.