I have been having problems with the accuracy of my .243. It will shoot 1/2 moa 5 shot groups all day long with brand new brass and is still ok on the second reload. But by the 3rd and 4th reloads the groups open up to 3 inch!!
I pulled the bullets with an RCBS mechanical puller to see if the powder charges were consistent but found the bullet tension varied greatly from bullet to bullet.
I am using Sierra bullets and Lapua brass which i have since measured and weighed and they are consistent. The load is fairly mild 41g of Vit 160 and i clean the insides of the necks to remove fouling and resizing lube.
Anyone any ideas??
Thanks
I pulled the bullets with an RCBS mechanical puller to see if the powder charges were consistent but found the bullet tension varied greatly from bullet to bullet.
I am using Sierra bullets and Lapua brass which i have since measured and weighed and they are consistent. The load is fairly mild 41g of Vit 160 and i clean the insides of the necks to remove fouling and resizing lube.
Anyone any ideas??
Thanks