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Hi velocity due to chamber "hold" time?
I was shooting my Whisper this weekend w/subsonics thru chrono & all was well for 1st seven shots. Then the wind kicked up so I waited a couple of minutes to shoot. All previous shots were around 1050 fps. When I fired the 8th after being in the chamber for a while it came out @ about 1250 fps & was definitely supersonic. This was my last shot.
Have any of you experienced this?
Do you think cartridge got hot in chamber (9.5g VV N110 w/220g SMK) & velocity was temperature related?
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