Originally Posted by montana_native
I had one this morning out of a Remington 700 243 AI. Just a fraction of a second delay, but enough to make me a bit paranoid for the next few shots. That shot was about 80 fps slower than the others in the group. CCI 200 primers and H414 powder witha 105 A-max was the load.
That much change in velocity would indicate to me that you had a bad primer.
Some times if you handel the primer with your hand it will get contaminated with skin oils
and doesn't ignite properly causing a delayed ignition and a slow flame propagation.
The other thing that happens in colder weather is that the fireing pin and spring have
to much grease on them and it will slow or stop the firing pin from striking the primer.
but this will not change the velocity like in your case but will cause hang fires.
There are a lot of other possibilities like under sized cases, poor primer fit,weak fireing
pin spring and/or a short firing pin and deep seated primer combo.
J E CUSTOM