KaibabHunter Report post Posted August 16, 2016 I'm trying to get my rifle ready for a dec hunt. I shot my 300 win mag thru a chronograph yesterday when it was about 100*. It gave me 3 speeds on a 3 shot group: 3180, 3194 & 3198 (avg 3190). The box says 3120 from the manufacturer. My dec hunt the avg temp will probably be 45-50*, maybe as low as high 30's and as high as 70*. Avg elevation of say 2500. Zeroed for 200. I want to order my CDS dial from leupold, would it be safest to just use the 3120 from the manufacturer or should I use the avg from yesterday of 3190? Share this post Link to post Share on other sites
rossislider Report post Posted August 16, 2016 I'm trying to get my rifle ready for a dec hunt. I shot my 300 win mag thru a chronograph yesterday when it was about 100*. It gave me 3 speeds on a 3 shot group: 3180, 3194 & 3198 (avg 3190). The box says 3120 from the manufacturer. My dec hunt the avg temp will probably be 45-50*, maybe as low as high 30's and as high as 70*. Avg elevation of say 2500. Zeroed for 200. I want to order my CDS dial from leupold, would it be safest to just use the 3120 from the manufacturer or should I use the avg from yesterday of 3190? Use your average. Do not use the manufacturer's numbers! Those numbers are averages from different rifles with many factors coming into play that are going to be very different from what you are shooting. They offers those numbers to give you an idea, but will never be true to every, or even most, rifles. 2 Share this post Link to post Share on other sites
PowellSixO Report post Posted August 16, 2016 I'm trying to get my rifle ready for a dec hunt. I shot my 300 win mag thru a chronograph yesterday when it was about 100*. It gave me 3 speeds on a 3 shot group: 3180, 3194 & 3198 (avg 3190). The box says 3120 from the manufacturer. My dec hunt the avg temp will probably be 45-50*, maybe as low as high 30's and as high as 70*. Avg elevation of say 2500. Zeroed for 200. I want to order my CDS dial from leupold, would it be safest to just use the 3120 from the manufacturer or should I use the avg from yesterday of 3190? Maybe try keeping your ammo in an ice chest, and pulling a single round out at a time and immediately firing through the chronograph? I've heard of guys doing this while working up loads in the summer, to simulate fall hunting conditions. Share this post Link to post Share on other sites
