andre3k: Buying your core wire in 18" precut strips is pretty slick and will save you some hassle and time. But make sure your supplier can tell you whether it's the corroding or noncorroding type. Being able to specify the antimony percentage from your supplier is a must. For my .30 Blackmon dies, I like to use a 1% antimony mix rather than the standard .5% ratio. I've used about 3,000 .5% cores recently and they sure shoot great. But I like how the jackets act with the 1% mix over the .5% brew.
With a 1% mix, I get less lead buildup on the leading edge of the core seating punches than with the .5%. The core seated jackets eject cleaner and the jacket shortening when seating cores is more consistent with the harder core material.
This is relative for my setup and my technique. And I sure wouldn't say this would transfer directly to someone else's stuff using different dies, blah, blah, blah....
The Blackmon core cutter works fine. I have mine mounted so the wire is fed in vertically. The cut cores drop out the bottom into a little bucket placed just below the cutter so the cores don't get nicked and dinged by a long fall.
When getting your dies from Larry, I'd advise getting three 'punch holders' so you can keep the core squirt, core seating and point dies as seperate assemblies. Otherwise, you'll have to swap everything into your one 'punch holder' each time you change steps. Keeping each die as a seperate unit allows you to quickly make small adjustments and is a real time saver. Three core seating punches (in .001 increments) would also be a wise step to take right from the start. Sonner or later, you'll need to adjust the core punch diameter to work with the core material/jacket lot you're working with. Lacking an asst. of different sized punches, your only recourse will be to alter the core weight to get them to come off the punch. When this happens, your first instinct is to go with a smaller core seating punch....when the opposite is usually the case. A larger punch allows less bleed-by around the top of the core. Excessive bleed-by can allow the core 'hang' onto the punch and make ejection difficult.
Again, it's a balancing act...cores/core material/jackets/jacket lots/lube. But good tools and a common sense mechanical approach will have you making good bullets in short order.
If it wasn't pretty simple,
I sure wouldn't be able to do it......