Bore diameter?

Geri

What is the bore diameter of the 22 wmr? Thanks.

iceracerx

IIRC it's 0.223"

charliemeyer007

0.224

https://www.chuckhawks.com/22mag.htm

https://en.wikipedia.org/wiki/.22_Winchester_Magnum_Rimfire

Edspdog1

.224, tad bigger than a 22 lr me thinks.

MIKE WISKEY

I could agree with you but then we'ed all be wrong, .224" is the GROVE dia. (also bullet dia.) bore dia. is .220" or slightly smaller

Edspdog1

always a hair splitter around, grins

John Stimson

.22 LR .22 WMR

.217 Bore Dia .219
.222 Groove Dia .224

.2255/ Bullet Dia .2245/
.2215 .2205

SAAMI data

Geri

Thanks to all. Mike you are right, I wanted the groove diameter.
Thanks again all.

Hawk Carse

Edspdog1 wrote:

always a hair splitter around, grins

Everybody knows the difference between a clip and a magazine but few seem to know there are two different dimensions for the hole in the barrel and they are using the wrong word.

Geri

OK, what is the usual twist rate?

pip5255

the usual for 22 rimfire is 1 in 16