I can appreciate where this topic has come from and where it's gone. I wanted to add a little of my own experience of late.

I took possession of my 2nd 6.5x47 last October. It's a lighter (8 lb 10 oz) hunting rifle in 6.5x47 on a Pierce action and #3.1 Broughton barrel.

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I started with Rel 17 and CCI 450's this past fall when the temps were in the 40's and continued through the winter when I had temps in the 20's. Both the Berger 140 VLD and 140 Partition did well in ladder's @ 360 yds. I focused first on the Partition as I had 500 of them on my bench. Ended up with this.
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Just this past week I wanted to move over to the 140 VLD with it's .612 BC. The 140 Part has a .490 BC. My 140 VLD ladder looked like this. Several good nodes, then topping out at 3021 fps with 43.5 gr in 21 deg F temps. Their was just a hint of pressure via sticky bolt lift. This was fine as #9 and #10 is what I wanted to focus on.
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I settled on 42.1 gr for 2965 fps and 8 SD (I jotted down the wrong powder charge, 2906 fps and 7 Sd on the target thus they are incorrect). This was at 70 deg F three days ago.
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Yesterday I ran a 600 yd primer test having discovered several months back with the 140 Part that the Fed 205m primer gave lower ES/SD. In my big Surgeon/AICS sniper rifle (17+ lbs) I shoot the 130 VLD with 40.8 H4350 and CCI 450's. Great load giving 10-shot sub 1/2 moa single digit SD's all day, every day! But for Rel 17, the Fed 205m is tops.

Same results with the 140 VLD. A 10-shot string av 2975 fps gave a 16 ES/5 SD with the Fed 205match primer in 65 deg temps.

No pics of the 600 yd targets as the wind was switchy between 4 and 8 o'clock and the horizontal is not pretty but the vertical was 4-1/2". Not great but doable enough for me to persue a bullet seating depth test in the near future.

Hope I was able to add something to a fine cartridge.

Alan