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Rifles, Reloading, Optics, Equipment
Reloading
7mm Ultra Loads?
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<blockquote data-quote="davewilson" data-source="post: 166623" data-attributes="member: 4491"><p>the reason for higher speeds with larger diameter bullets is more surface area being pushed on. there was quite a debate on this a while ago, less bearing surface, faster burning powders and about 16 other things all come into play. just remember a larger dia bullet will usually be shot at a faster speed all things being equal.</p><p></p><p>i had a 7rum with a 30" barrel and shot the 180 Bergers around 3250 with 99 gr of 872. i know Retumbo would give more velocity.</p></blockquote><p></p>
[QUOTE="davewilson, post: 166623, member: 4491"] the reason for higher speeds with larger diameter bullets is more surface area being pushed on. there was quite a debate on this a while ago, less bearing surface, faster burning powders and about 16 other things all come into play. just remember a larger dia bullet will usually be shot at a faster speed all things being equal. i had a 7rum with a 30" barrel and shot the 180 Bergers around 3250 with 99 gr of 872. i know Retumbo would give more velocity. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7mm Ultra Loads?
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