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Long Range Hunting & Shooting
6.5 build for 140 Bergers at 2900-3000?
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<blockquote data-quote="merbeau" data-source="post: 1561773" data-attributes="member: 38494"><p>I was in the same situation. I am not a rich person who has his own shop for rebarreling nor can afford to pay a gunsmith several hundred dollars each time. I narrowed my search down to two 6.5 rounds. The 6.5 Brenneke and the 6.5x55 Swede. Both are accurate rounds. </p><p></p><p><span style="font-size: 15px">Vihtavuori's web site provide data for the 6.5x55 SE which is for modern day firearms - most of the reloading data are published for this round assuming someone with an 1896 rifle possibly could shoot the recipe and those rifles will not take modern day pressures. I almost went for the Brenneke but the loading data are limited. I decided to go with the 6.5x55 SE as a starting point. There is an Excel program that estimates barrel life and for a powder with a high heat potential (e.g., 3900) about 2300 rounds for one with a low heat potential (e.g., 3700) nearly 3000 rounds. I shoot the Lapua 136 Scenar using Lapua brass, 46.5 grains of RL 22, CCI BR2 primers and 0.002 neck tension. Velocity out of a Douglas premium target barrel at 27.5 inches is 2850 fps. Work up your loads, this one works for me. Vihtavuori lists data for their 139 Scenar L at 27.5 and 29.0 barrel length and both are close to 3,000 fps for N540/560. I have found the Swede does not like brass near or at maximum length. </span></p></blockquote><p></p>
[QUOTE="merbeau, post: 1561773, member: 38494"] I was in the same situation. I am not a rich person who has his own shop for rebarreling nor can afford to pay a gunsmith several hundred dollars each time. I narrowed my search down to two 6.5 rounds. The 6.5 Brenneke and the 6.5x55 Swede. Both are accurate rounds. [SIZE=4]Vihtavuori's web site provide data for the 6.5x55 SE which is for modern day firearms - most of the reloading data are published for this round assuming someone with an 1896 rifle possibly could shoot the recipe and those rifles will not take modern day pressures. I almost went for the Brenneke but the loading data are limited. I decided to go with the 6.5x55 SE as a starting point. There is an Excel program that estimates barrel life and for a powder with a high heat potential (e.g., 3900) about 2300 rounds for one with a low heat potential (e.g., 3700) nearly 3000 rounds. I shoot the Lapua 136 Scenar using Lapua brass, 46.5 grains of RL 22, CCI BR2 primers and 0.002 neck tension. Velocity out of a Douglas premium target barrel at 27.5 inches is 2850 fps. Work up your loads, this one works for me. Vihtavuori lists data for their 139 Scenar L at 27.5 and 29.0 barrel length and both are close to 3,000 fps for N540/560. I have found the Swede does not like brass near or at maximum length. [/SIZE] [/QUOTE]
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6.5 build for 140 Bergers at 2900-3000?
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