Improvement in accuracy with Redding dies?

I doubt the problem is the Redding dies. Redding dies are excellent. But I wouldn't use the same die to seat and crimp. I use the Lee FCD for a light crimp in my ARs and some other semi auto rifles. To confirm the quality of the Redding dies, check bullet runout of the completed ammo. I would work on your load development by trying different powder and bullets. Don't bring crimp into the load development until you find a load that works. Then add a light crimp and see if accuracy is affected.
 
He's using Dillon dies. His question was whether he should switch to Redding or not.


Turtlehead,

Fast and efficient is tough. If you are working with brass you got that isn't yet processed in any way, you will want to size it first, then trim. For that purpose, use a Redding S die with the right bushing and the expander removed so you get it done in one step, then clean and trim the deprimed cases afterward. For loading, there just won't be a die at the sizing station.
 
Take a look at your barrel. Now choose a bullet that should easily stabilize with your barrel twist. Choose one and only one bullet to start.

Make all of your brass uniform. Uniform is the name of the game. With all things as uniform as humanly possible choose a powder and start load development. When doing load development you look at all the variables and only change one at a time. Choose a powder and start trying different charges. Everything else is uniform, case prep. bullet, sizing, primers and brass.

While some dies are designed and marketed as for example Match or Precision I have loaded plenty of fine .223 Remington using standard everyday full length resizing dies. Worry about dies once you have a good load worked up to improve upon.

Ron
 
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