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Hunting
Long Range Hunting & Shooting
270-300 Win Mag now feasible
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<blockquote data-quote="CogburnR" data-source="post: 1307054" data-attributes="member: 29174"><p>I decided to develop a little 270/300WM data with some of the pile of 130g Barnes TTSX I have while fire forming brass also.</p><p></p><p> I shot 4 with 72g of RL22 at an average of 3467fps with three going into a cloverleaf. Then I started a pressure series with IMR7828ssc from 70-74g and speeds from 3316 to 3481fps. Amazingly, the last four went into a one hole group of .312"@100y even though the powder charge was stepped up from 71-74g in 1g increments. </p><p></p><p>I think there is room for more velocity but I will probably try some of the 135CE's at the next weather opening. It is nasty right now. My coal will be around 3.454" for a jump of .050". The Barnes were at a 3.469" coal for a .050" jump.</p></blockquote><p></p>
[QUOTE="CogburnR, post: 1307054, member: 29174"] I decided to develop a little 270/300WM data with some of the pile of 130g Barnes TTSX I have while fire forming brass also. I shot 4 with 72g of RL22 at an average of 3467fps with three going into a cloverleaf. Then I started a pressure series with IMR7828ssc from 70-74g and speeds from 3316 to 3481fps. Amazingly, the last four went into a one hole group of .312"@100y even though the powder charge was stepped up from 71-74g in 1g increments. I think there is room for more velocity but I will probably try some of the 135CE's at the next weather opening. It is nasty right now. My coal will be around 3.454" for a jump of .050". The Barnes were at a 3.469" coal for a .050" jump. [/QUOTE]
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270-300 Win Mag now feasible
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