So i finally took the advice of some guys at the rifle club. They had told me that the CCI sr primers i had been using were limiting the accuracy of the loads i was shooting. At first i really didnt believe that a primer could make that much difference, boy was i wrong! went to the range yesterday to do some testing they were right! Below are 4 3rd groups shot at 100yds off bags out of a Howa 1500 .223 1:12 twist 22" barrel. Round was a .224 40gr nosler over 26.9gr of varget federal 205 small rifle match primer in remington brass C.O.A.L. 2.265. 1st group the low shot was the cold bore shot. 2nd group 3rd group 4th and last group The rifle first group was .79" ctc all other groups were .5 or better. Quite pleased with the new primers. Prior groups withh cci would yeild no better than .75" ctc usually because 1 shot would go out. I am really amazed that a howa with a light profile barrel is capable of this kind of accuracy!