Crocker Hills Hunter

T7 primers are probably marginal for T7 pellets, they work very well with loose T7.

I would also suggest the Fed 209A's are to hot for pellets, you might get a very pronunced 'crud ring' right about the of the powder column. I would suggest if you are going to shoot pellets you might try Winchester w209's. They are coolest of regular 209 primers.

I would also suggest that since you have been shooting Feds - you might need to clean the flash channel in your breech plug. CVA chooses to use a very small 3mm flash channel and in combination with a tight flash hole you could be building carbon in the flash channel. You can get a drill bit and turn it by hand in the channel under the primer pocket and get the carbon out.