Back in September when I got my Bantam Sniper HR I shot some strings to get a baseline. Of late I noticed that when I took my gun outside into the cold (32-35 F) and immediately shot it my point of impact was at least one hash mark high. Then after a half hour or so outside it would settle back to its original POI. Before I noticed this I simply dialed my POI down, which I believe cost me three rats at 45 yards because I shot low once the gun got as cold as the outside temps.
So today I decided to run three, ten shot strings to see if the numbers were much different than September’s. Shot outside in 32 degree weather all on level 6 of transfer port adjuster. I let the gun sit outside for an hour before chronographing. First up:
Crosman Premiers 14.3s / lo:919.6 /hi:925.2 / avg. 922.4 / es:5.62 / sd: 1.73. The average velocity was 24 FPS less than in September.
JSB Exact 18s / lo:860 / hi:866.8 / avg:863 / es:6.84 / sd: 2. The average velocity was 28 FPS less than in September.
AAs Diabolo Field 16s / lo: 895.3 / hi:908.3 / avg:900.7 / es:13 / sd: 4.58. The average velocity was 18 FPS less than in September.
So I believe I have confirmation as to a lower point of impact in cold weather for my PCP. Any insights or comments welcomed.
So today I decided to run three, ten shot strings to see if the numbers were much different than September’s. Shot outside in 32 degree weather all on level 6 of transfer port adjuster. I let the gun sit outside for an hour before chronographing. First up:
Crosman Premiers 14.3s / lo:919.6 /hi:925.2 / avg. 922.4 / es:5.62 / sd: 1.73. The average velocity was 24 FPS less than in September.
JSB Exact 18s / lo:860 / hi:866.8 / avg:863 / es:6.84 / sd: 2. The average velocity was 28 FPS less than in September.
AAs Diabolo Field 16s / lo: 895.3 / hi:908.3 / avg:900.7 / es:13 / sd: 4.58. The average velocity was 18 FPS less than in September.
So I believe I have confirmation as to a lower point of impact in cold weather for my PCP. Any insights or comments welcomed.
