3 Die and 4 die reloading sets, what's the difference anyway? 

A good way to look at it is the dies are 1, 2, and 3 ...but on a four die set it's 1, 2, 3a, and 3b.

Thanks 👍 I'm new to reloading. Just got my press and all the tools needed to reload 9mm. I still have much to learn. Great video 👌

Love you older guys you from my paps day more knowledgeable and better at explaining stuff ive reload for years and avoided 4 die sets

Great explanation. Thank you for helping me understand these dies.

Nicely done, I learned something today!

yes exactly what i needed thank you very much sir hope you have a great day

Thanks for explaining. I'm in the process of trying to buy some dies right now and this helped answer one of my questions.

Thank you very much. A big help for someone considering entering the hobby for sure.

*Great explanation, thank you for sharing*

Awesome vid, thanks from Australia Grizz!

Thanks for the video sir.

In the rifles, the 4 die sets have a Full length die and a neck only sizing die. The pistols set just add a factory crimp die.

JUST GETTING INTO RELOADING MY SELF & WAS WONDERING ABOUT THAT 3 & 4 DIE SETS,,

Good to the point video, thx

Great explanation, I am new to reloading and I was wondering what the second die was for rcbs. I haven’t gotten to the flaring of case mouth yet, only resizing and re-primer. I am still doing some research for my 45-70 loads.

On the 4 die set the 3rd die is still a seat and crimp die. The 4th die, for Lee anyway, is the factory crimp die which also can "iron out" some deformities that the resizer missed or that was put in during the other processes. This, of course, is about pistol dies and not rifle dies. Great vid though, thank you!

the seat die in the lee set also will do a taper crimp ...

Liked your video Mr. Grizz! Very thorough unlike most I have watched (Jabb Intended). Most of the so-called pro reloaders never mention charging or which die the powder goes in. I do not comment much but just wanted to give ya way-to-go! 👍

Excellent, the ah ha moment the Mud is clearer now , am thinking priming after resize & flare the case ??

Now I get it, thanks.

Good job

I can’t speak for anyone else but u definitely helped me because I’m new to reloading and was wondering do I need to buy a four die set or is the three ok. 👍🏾✌🏾

Lee's instruction sheet says the 4th or Crimp die also sizes the brass so it can't be deformed. How important is that? -- Thanks for the video. It was just what I needed.

I’m curious about the difference between a 2 and 3 die set

Thx.

I'm loading 45 Long Colt and I have the three die lisset but do I need the factory crimp die

How about neck sizing?

Can you get by with a 3 die a reloading set or do you have to have the 4 die

On the 4 die set, will the bullet seating die also crimp the bullet? Or not?

I got car sick by 2:30, I'm sure it was good information though. Invest in a tripod

1.75 speed works pretty good for this....

how u seat the primer?

One eye is looking at ya, the other is looking for ya.

Now I know the difference.I ordered a Lee progressive 4000 press and it only came with 3 dies but the separate other caliber dies I have ordered are 4 die sets.I was really confused but now I know the difference.thanks for the video.I’m still in the process of setting the press up and I know nothing about setting each die to their specifications and the instructions that came with this press may as well been no instructions