ipscgraz
CGN Ultra frequent flyer
I noticed my Brownings have a few FTF and FTE lately using a load that used to work just fine...
Using 5.5 IMR SR 4756 and 124 GR cast RN.
Cleaned em both and tried it again.
No difference so I ran them over a chrony and found an avg of about 950 fps. This is about 80-100 fps lower than previous chrony readings. It was cool that day, maybe -2 or so.
I can write some of this off to my powder measure actually throwing 5.48 grains not 5.5 in this instance but this is quite a difference.
Anyone else see big drops like this this winter?
Using 5.5 IMR SR 4756 and 124 GR cast RN.
Cleaned em both and tried it again.
No difference so I ran them over a chrony and found an avg of about 950 fps. This is about 80-100 fps lower than previous chrony readings. It was cool that day, maybe -2 or so.
I can write some of this off to my powder measure actually throwing 5.48 grains not 5.5 in this instance but this is quite a difference.
Anyone else see big drops like this this winter?
