Dillon 550 - full length resizing issue

[cfullgraf]

Not a perfect solution but the cost will be limited to my time setting up the full length resizing die to match whichever rifle I'm handloading for at the time.

Or get a second sizing die and have one set up for each rifle.

Depends on how you value your time and the difficulty setting up the die each time.

 

[jmorris]

I put a whopping 6 factory rounds down range through the ARP barreled rifle and recovered all the cases. Deprimed the 6 cases and proceeded to full length resize them, trim OAL, and deburr the case mouths.

Results

• The cases from the ARP rifle sized correctly
• With minimum shoulder bump all cases chambered easily and fell out under their own weight when the bolt was retracted

That narrows the focus substantially. We know factory ammunition runs and your size die can’t return some brass fired in other arms to dimensions your rifle will accept.

I suppose if all of your .223 ammunition won’t run in all of your .223 rifles, your stuck with keeping them sorted anyway though.

As for your shoulder position being different, if you know what that number is, just lock the ring to the die and place/remove a 7/8 arbor shim between the lock ring and press of the correct thickness.

Quick, easy and repeatable. This set should cover it for less than $15.

https://www.msdiscounttool.com/cata...ZO8oTn2XmBzpKw6MKE7ipr08AC2w4mMAaAjogEALw_wcB

There are some setups that are not shim friendly though and something like this works great for precise adjustments.