These bullets as awesome and proven in so many spheres!
:goodjob: :shakeshout:
Turned on very accurate lathes using special copper alloy ...machined to 2-5 microns tolerance
The detail and quality control on those bullets ave to be seen to be believed.
They require you accept some new "rules" because of the driving bands, the accuracy and materials
So read the articles - they will make you think!
Start here
http://www.gsgroup.co.za/newrules.html
As guideline remember
1. Barrel Twist is crucial : it is to properly stabilise the bullet due to the copper bullets being longer than lead weight equivalents
2. GS Customs fly at the speed 1 weight class down but hit 1 weight class above
for example the GS Custom 308130HV080 does 3,170 out of 24" barrel ieGS 130gn
that is the speed of a standard 125 gn but it performs externally and terminally more like a 155gn.
3. The shanks of the bullets are .300 and the driving bands are .308 so effective bearing surface friction is about 30% of a standard bullet
My biggest game animal taken with a GS Custom
http://www.gsgroup.co.za/galtimstewart.html
Gerard also has plenty of little "nuggets"
You will find oddities in our line of bullets such as the fact that we make two distinctly different 7 mm bullet sizes. If you research the CIP specifications you will find that 7 mm Remington Magnum and 7 x 57 are not the same size bore or groove. Many such examples exist and we do not make calibre recommendations without good reasons. It is important for optimum results that you use the bullet that is best suited to your particular calibre.
ENS