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Rifles, Reloading, Optics, Equipment
Equipment Discussions
.300 WSM vs. 7mm WSM
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<blockquote data-quote="James Jones" data-source="post: 183769" data-attributes="member: 8843"><p>The 30 cal versus the 7mm is always a big debate and both sides always have some sort of lop sided info.</p><p> </p><p>Fact , two rilfes chambered in case of same case capacity but one has a 7mm bore and the other has a 308 bore , the 308 will shoot faster in every case with bullets of the SAME WEIGHT , its simple physics the 30 cal has a better bore to powder ratio.</p><p> </p><p>Fact , bullets of the same weight and bullet desgine , one in 7mm one in 30 cal the 7mm will always have the higher BC due to the longer bullet with higher SD.</p><p> Now which one shoots flatter? the faster bullet or the higher BC? , that question depends on what range your talking about. Out to 400 maybe 500yds the faster bullet will generaly win because its going faster and the differance in BC realy hasen't become evident yet but past 500yds the fatter bullet with lower BC is going to start to slow down faster and as this happens the wide plays a bigger effect ands does the drop so the 7mm will take over in the flatter shooting department as this transition takes place the 7mm bullet is going faster and having the same weight will retain more energy.</p><p> So which one shoots flatter the 300 win mag shooting a 150gr Balistic tip at 3400fps or the 7mm rem mag shooting a 160gr Accubond at 3000fps? at 400yds the 300 but at 800yds the 7mm is kicking its butt and at 1000yds the 30 cal 150gr is mearly a varmint round where the 160gr 7mm bullet will have plenty of energy to kill deer. So which one shoots flatter? </p><p> </p><p>As for the debate on the 7mmWSM versus the 300WSM , well that boils back down to the same factors we just discussed. But compairing the 300 Win mag to the 300WSM is not even fair as the 300 Win mag hold alot more powder and the 300 Win mag will out run the WSM every time if the barrel is at least 24" ,the same goes for the 7mmWSM versus the 7mm Rem mag. Yes the WSM case is more efficient than the older bigger mags but the power differance boils down to "over bore capacity" more than effeciency ,thats why their is only a small increse in velocity compaired to powder increase moving from 30-06 to 30-378 , the 30-378 is using 100% more powder yet only has a velocity increase of less than 1000 fps that around the 30% mark?</p><p> </p><p>So this new rifle is to be used for Elk and ground hogs (intersting combo) , at what ranges are this critters to be shot at? both the 300WSM and the 7mm will kill elk out to 500 maybe 600yds effeciently with good bullets. What kind of paramiters do you have for this weapon , as in weight , length , range for shooting , do you reload? , how many rounds are you expencted to shoot a year?</p></blockquote><p></p>
[QUOTE="James Jones, post: 183769, member: 8843"] The 30 cal versus the 7mm is always a big debate and both sides always have some sort of lop sided info. Fact , two rilfes chambered in case of same case capacity but one has a 7mm bore and the other has a 308 bore , the 308 will shoot faster in every case with bullets of the SAME WEIGHT , its simple physics the 30 cal has a better bore to powder ratio. Fact , bullets of the same weight and bullet desgine , one in 7mm one in 30 cal the 7mm will always have the higher BC due to the longer bullet with higher SD. Now which one shoots flatter? the faster bullet or the higher BC? , that question depends on what range your talking about. Out to 400 maybe 500yds the faster bullet will generaly win because its going faster and the differance in BC realy hasen't become evident yet but past 500yds the fatter bullet with lower BC is going to start to slow down faster and as this happens the wide plays a bigger effect ands does the drop so the 7mm will take over in the flatter shooting department as this transition takes place the 7mm bullet is going faster and having the same weight will retain more energy. So which one shoots flatter the 300 win mag shooting a 150gr Balistic tip at 3400fps or the 7mm rem mag shooting a 160gr Accubond at 3000fps? at 400yds the 300 but at 800yds the 7mm is kicking its butt and at 1000yds the 30 cal 150gr is mearly a varmint round where the 160gr 7mm bullet will have plenty of energy to kill deer. So which one shoots flatter? As for the debate on the 7mmWSM versus the 300WSM , well that boils back down to the same factors we just discussed. But compairing the 300 Win mag to the 300WSM is not even fair as the 300 Win mag hold alot more powder and the 300 Win mag will out run the WSM every time if the barrel is at least 24" ,the same goes for the 7mmWSM versus the 7mm Rem mag. Yes the WSM case is more efficient than the older bigger mags but the power differance boils down to "over bore capacity" more than effeciency ,thats why their is only a small increse in velocity compaired to powder increase moving from 30-06 to 30-378 , the 30-378 is using 100% more powder yet only has a velocity increase of less than 1000 fps that around the 30% mark? So this new rifle is to be used for Elk and ground hogs (intersting combo) , at what ranges are this critters to be shot at? both the 300WSM and the 7mm will kill elk out to 500 maybe 600yds effeciently with good bullets. What kind of paramiters do you have for this weapon , as in weight , length , range for shooting , do you reload? , how many rounds are you expencted to shoot a year? [/QUOTE]
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.300 WSM vs. 7mm WSM
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