20-222 Neck Busing Question/Help

[squirrelsnpr]

What neck size bushing would I need for a 20-222 no turn neck, using Lapua brass. Basically if someone could mic one side of the the neck of their 222 Lapua brass, I can figure out the rest ((x) x's 2)+.204-.002=Y
Thanks!

 

[Phil]

OK.....


Here is what i got.

Lot # P00418501

Lapua .222 brass

.0125-.0135

This is why i turn ALL my brass.......Most of it to .012

 

[pwdrbrn]

My necks are "cleaned up" to 013 as chamber is 234 neck, and 227 bushing actually does 228+. 002-0025 clearance (per side) on neck. Using formed 223 win cases. Mostly depends on chamber dimensions. Tom.

 

[cmillard]

.20-222 remington has been in my intrests lately!!! i think this would be a great little round. any ballistics on this round?

 

[Rick in Oregon]

I'm using a .226" neck bushing for both Lapua and domestic brass for most of my .20 cal rifles.

 

[sav12lrpv]

I've got the same question, but regarding .20PPC from .220 Russian. Doesn't the necking down process cause the neck wall thickness to increase? How much?

 

[Rick in Oregon]

In all calibers I form down from a parent case, I usually have to neck turn, if only to remove the high spots on the new neck. I also anneal as the final step after forming and turning. JMO

 

[pwdrbrn]

Pretty much same answer, depends on chamber dimensions. 260 rem. Savage mod. 10 necked down 308 brass gave 003 neck clearance, using 294 bushing, very little brass is being worked. For 17 rem f.b., 223 brass formed to it requires neck turning, as you're into case body, a lot thicker. Ain't it fun?!!? Good luck, Tom.

 

[ab_bentley]

I've got the same question, but regarding .20PPC from .220 Russian. Doesn't the necking down process cause the neck wall thickness to increase? How much?

I used a .232" neck bushing on my PPC, I was able to hit PD's at 700yds with it, Adam

 

[ab_bentley]

I've got the same question, but regarding .20PPC from .220 Russian. Doesn't the necking down process cause the neck wall thickness to increase? How much?

I used a .232" neck bushing on my PPC, I was able to hit PD's at 700yds with it, Adam

But that was with a .237" No Turn chamber. Adam

 

[Catfish]

Mic the neck dia. of a case fire in your chamber. If you need to turn the necks I would use a bushing .004 your chamber, but you must turn your necks for .002 neck expantion as the necks will spring back about .002.