Author Topic: temp. effects (Read 317 times)

josebd · « **on:** March 18, 2004, 04:00:21 PM »

sighted in my .223 in 40 to 50 degree weather,today around 80 first shot 2 1/2 inches high,2 inches left,does temp effect it that much?

Thomas Krupinski · « **Reply #1 on:** March 18, 2004, 04:04:12 PM »

Yes, Especially depending upon the tempature sensitivity of the powder.

josebd · « **Reply #2 on:** March 18, 2004, 04:37:57 PM »

loaded h335 26.5,speer 50 grain,cci 450 primer in cold weather,ill try 25.9

Bullseye · « **Reply #3 on:** March 18, 2004, 04:38:54 PM »

Could be the temp. Where were the rest of the shots? Was the barrel clean? My 223 is the first barrel I have ever had that will shoot about 2" with the first shot out of a clean barrel. Second shot about 1" high and then right on with the third. I know this is common, but it is the first barrel I have ever had the acted this way.

Duffy · « **Reply #4 on:** March 21, 2004, 08:15:24 AM »

Temp does affect ballistics of some powders but I haven't noticed it that much on H335 but on H110/296 there are larger swings. Beings you are shooting high, that would suggest a slower load which would be the oposite of going from colder to warmer temps. Might also check your bedding on your bbl if it is applicaple to your type of gun. If it straightens out after a few shots it could be either a fouling problem or a non fouling problem.(did you clean it before you went out this time and not before?)