I have just had my .223 coneverted to AI and after fireforming when I run them through my new Redding neck die they seem to be squeezed in the body area. When I use the seating die it also seems to squeeze and there is what I would think is excessive force needed to retract the case. My case bodies do not measure much more than .001 over any of the other cases that I haven't yet fireformed. Does Redding manufcture their dies that tight? Is my fireforming load of 26 gr H335 topped with a 55gr FMJ/PSP just over pressure? Is my chamber possibly cut too large? I would appreciate any help.

Dog-duster

If I were you, I'd drop the fireform load down to a "starting load". See if the results you describe are the same. If so, contact Redding and describe your problem, they are very helpful. Next, make a chamber casting and mike it. If A+B does not equal C, talk with the person who chambered the barrel.

Dog Duster,

I too just got a new Krieger chambered in .223 ackley. I haven't received my redding bushing dies yet so I borrowed some Type S bushing dies from a friend (the same ones I have on order). Unfortunately I'm getting .004 to .008 runout of my loaded rounds, partially because I think there is too much slop in the body area when sizing. Anyways, point is that you have just the opposite problem - your fit is a little too tight, I'm guessing you have a "liberal" chamber in the base area. Having a neck die that just kisses the body when sizing isn't all bad, as typically the concentricity of the loaded rounds are better. The downfall is that you must lube the cases as if you were FL sizing. I have several Harrel's dies for my 6PPCs and 6BRs that are custom fit - one is a FL die that just BARELY kisses the body and the result is loaded rounds that average around .0005! Just something to consider before you send your dies back.

Shoot straight,

RAG

What are the specs on the chamber reamer? My guess is the shoulder diameter will be the dimension altered the most.
Clymer has a shoulder dia of .3700 on their printClymer
My reamer print has it at .3687
Reamer is from Pacific Tool

What's up here? There are replies that have been posted and they aren't showing up .

Unfortunately, in some cases the die does not match the reamer. It is pretty common. With my .223 AI, I had the smith who built it make me a die with the same reamer he chambered it with, so I don't have that problem with mine. I did have a similar problem with a 6 br recently, and I went through 3 dies before finding one that matched well. (which may be what you have to do) I would take a fired case, and a sized case, and measure each at the shoulder body junction, and at the web. You also can take a case and cover it in marker pen ink, chamber it, and where the marker is rubbed off, is where it is tight. This should start to give you an idea where the problem is. ...ol blue

Dog-duster
This is not an answer to your question but I thought I would offer this for info only. I have loaded aproximately 3000 .223 AI rounds with standard .223 Lee collet dies. They load very accurate amunition with very little run out. Try em you might like em, and the price is right to.