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220 swift neck bushing size

DLT

Silver $$ Contributor
To those who reload the swiftest with winchester brass what neck bushing size are you using ? And are you using the expander ? Redding dies
 
To those who reload the swiftest with winchester brass what neck bushing size are you using ? And are you using the expander ? Redding dies
I use a .251 in a Redding Die.I hope this helps you Tommy Mc. My Gold membership is up. Time to RE-UP Tommy Mc
To those who reload the swiftest with winchester brass what neck bushing size are you using ? And are you using the expander ? Redding dies
 
I use a .251 in a Redding Die.I hope this helps you Tommy Mc. My Gold membership is up. Time to RE-UP Tommy Mc
I did my measuring a few years ago and came up with .255 bushing size I thought I needed. I used it and seating was very hard so I went back to using my full length dies. Fast forward a few years I decide to get it back out to play with and need to find out the correct bushing. I don’t see how in the world your using a .251 unless I have something bad bad screwed up
 
Measure one cartridge with a bullet seated. Measure the outside diameter of the neck. If possible use a .0001" micrometer. The 10,000s of an inch measurement really helps split the hairs. Then order a new bushing for your Redding die that is .002" smaller than the measured neck diameter with a bullet in it. The reason for using one bushing .002" smaller than the neck diameter with a seated bullet is to allow for spring back of the brass.

For my Redding S-Type bushing dies, I usually have two or three bushings in .001" increments for whatever cartridge. That gives me an option to experiment with neck tension.
 
Measure one cartridge with a bullet seated. Measure the outside diameter of the neck. If possible use a .0001" micrometer. The 10,000s of an inch measurement really helps split the hairs. Then order a new bushing for your Redding die that is .002" smaller than the measured neck diameter with a bullet in it. The reason for using one bushing .002" smaller than the neck diameter with a seated bullet is to allow for spring back of the brass.

For my Redding S-Type bushing dies, I usually have two or three bushings in .001" increments for whatever cartridge. That gives me an option to experiment with neck tension.
I don’t have a set of them handy, im getting .258 loaded, My bushing is .255. Im on way to load now. It’s been a few years since I have played with this gun and these dies so maybe I won’t have any headaches
 
.003" might be sizing the neck down too much. .001"-.002" is the usual neck tension you would want. Just just order a extra .256" bushing. The uncoated bushings go for about $20, and the TiN coated bushings go for about $40.
 
Ok. Fresh from the bench, winchester brass annealed with my .255 bushing and no expander measures .254.5 - .255. Loaded rounds measures .258. Im going to try a .256 bushing. As long as the case mouths have a good chamfer on them bullets go in just a lil snug. Nothing like I remembered it was a few years ago. Could have been different brass
 
Weird weird weird. I checked my sized necks this morning looking for bushings and the measure .252. Surely they didn’t shrink overnight When I sized them yesterday they came out of the die with no expander at 254.5 - .255. Anybody had that happen before ? Only thing I could think of is my calibers at the bench might have took a crap. Several calipers at work measures the necks at .252
 
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