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Rifles, Reloading, Optics, Equipment
Reloading
7mm-300 Weatherby Berger Load Data
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<blockquote data-quote="Lefty7mmstw" data-source="post: 2004582" data-attributes="member: 48043"><p>Barnes doesn't want to get sued for recommending something they haven't fully tested yet. Sierra did something similar with me when I asked for 25wssm data back when that was new. The data I got was so puffball that I scrapped it and went with other things. </p><p>As to your 7x300roy, I would use 7stw data starting 10% down and use rather slow powders (h50bmg, etc.) also to keep issues at bay as you get used to the rifle. You will need to know if your rifle is a standard throat or has a longer weatherby throat in it also. A standard throat in a rifle like this should make for 3.8" or so seating for a bullet like a vld. A roy throat would be a tenth or two longer. Also check twist rate as some of the big 7's were built with 10" twist and won't do well over 160 grain pills or so.</p><p>Stay safe by working slowly and asking questions... Good luck, it ought to be a hoot when you get her done.</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 2004582, member: 48043"] Barnes doesn't want to get sued for recommending something they haven't fully tested yet. Sierra did something similar with me when I asked for 25wssm data back when that was new. The data I got was so puffball that I scrapped it and went with other things. As to your 7x300roy, I would use 7stw data starting 10% down and use rather slow powders (h50bmg, etc.) also to keep issues at bay as you get used to the rifle. You will need to know if your rifle is a standard throat or has a longer weatherby throat in it also. A standard throat in a rifle like this should make for 3.8" or so seating for a bullet like a vld. A roy throat would be a tenth or two longer. Also check twist rate as some of the big 7's were built with 10" twist and won't do well over 160 grain pills or so. Stay safe by working slowly and asking questions... Good luck, it ought to be a hoot when you get her done. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7mm-300 Weatherby Berger Load Data
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