hey , yall , i'm noticing much slower reads when i shoot with the muzzle about one inch from the plane or first sensor.....when i scoot the muzzle back to around 8" my soft-tuned .177 gamo shadow 1000 goes from 152 m/s up to 262 m/s...... have you guys found an optimal distance away from the midget box to get your most accurate readings ? i know 6" up and 6" out usually does best with my (outdoor only) green f1 chrony , and about 12" back for co2 guns because the gas cloud throws it off...............but how far back have you found to be most accurate of speed testing non- co2 guns ? .......( i can REALLY see my little china box getting shot now :-( ).......... and have yall found if any lighting from outside the little cube effects the readings ?