I just got my new Anniversary 362 from Pyramyd and it doesn’t dump all the air when pumped from 6 to 8 shoots. After I shoot, I cock it again to dump any remaining air. On 7 pumps I get consistent chrony numbers from 623 fps to 627 fps with 13.4 gr JSB, but on 8 pumps it can be erratic. Anyone experience this? Does the rifle just need to break in, or is it a warranty issue?