Thread: 6mm ARC

I’ve shot 3 boxes of the Factory 108’s through the Rifle now and will start to reload those 60 cases ( keeping the final box as a control group , with its known performance from the first 60 rounds )
After establishing the distance to the lands I have made up 3 Dummy rounds using the 3 different projectiles that I want to try first , each one seated to put the projectile 20thou off the lands .
Originally I thought I’d use the 90gr TGK Sierra , but as you can see from the photo the 90gr TGK has to be seated a long way into the case which really takes up case capacity .
This 6mm ARC has to produce velocities that exceed my 6x45 by a decent margin to make me want to keep it . So running it as “ Hot “ as I can is a major factor for me .
I will be loading a batch of each projectile to ascertain which combo gives the best accuracy/velocity results .
I just thought it was interesting to see the differences of how far each projectile protrudes into the case when seated 20thou off .

From left to right

90gr Sierra TGK - 87gr Hornady hpbt - 85gr Sierra hpbt