Twist Rates PDF


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Calibre Cross Reference PDF



                 
Twist Rates

Rifle Twist Rates
Caliber – Twist Rate – Bullet Weight

 

 

Calibre

Cross Reference

     

.172
1:10 all weights

.222 Rim Fire
1:16 all weights, lead bullets

.224 / 5.56mm
1:16 up to 55 grains, 4300 fps or more
1:15 up to 55 grains, 4100 – 4300 fps
1:14 up to 55 grains, less than 4100 fps
1:12 50 to 62 grains
1:10 50 to 63 grains - up to 69 grains
1:9 63 – 70 grains
1:8 70 grains or more

.243 / 6mm
1:15 up to 70 grains
1:14 70 – 75 grains
1:13 75 – 85 grains
1:12 85 – 100 grains
1:10 100 grains or more

.257
1:14 up to 70 grains
1:13 70 – 80 grains
1:12 80 – 90 grains
1:10 90 – 100 grains
1:9 100 grains or more

.264 / 6.5 mm
1:9 up to 130 grains
1:8 130 grains or more

.270
1:10 all weights

.284 / 7mm
1:11 up to 140 grains
1:10 Magnum velocities
1:9.5 140 grains or more

.308 / 7.62mm
1:15 up to 150 grains
1:14 150 – 168 grains
1:12 168 – 170 grains
1:10 170 – 220 grains
1:8 220 grains or more

.311 / 7.65 mm
1:10 all weights

.321
1:16 all weights

323 / 8mm
1:10 all weights

.338
1:10 all weights

.348
1:12 all weights

.358
1:12 all weights

.375
1:12 all weights

.411
1:14 all weights

.416
1:14 all weights

.429
1:38 all weights

.458
1:20 all weights up to 2000 fps
1:14 all weights above 2000 fps

 

 

Headstamps

http://cartridgecollectors.org

for more Cartridge info, click 'Home' on Their site

 
http://www.gunsandammo.com/ammo/pair-barrel-twist-rates-ammo/          

   

Guidence on

Firearms Licensing Law April 2016

(Please inform me if this becomes out of date)

 

 

The Firearms Act 1968

For latest with amendments -follow link

http://www.legislation.gov.uk/ukpga/1968/27/contents