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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.375 Norma
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<blockquote data-quote="Kennibear" data-source="post: 897665" data-attributes="member: 51650"><p>80Rooster</p><p></p><p>I currently own a 26" barreled Savage in 375 Ruger. I have worked with the 68mm Mannlicher case in 6.5 and it's base diameter is 0.010" smaller. The shoulder of the 8X68 MS is a gentle 14 1/2 degrees and shorter than the Ruger to the shoulder and about as long to the shoulder neck junction. The 6.5X68 MS has a lot more case capacity than the 264 WinMag but I doubt the 68mm MS case is a match for the Ruger.</p><p></p><p>That all being said the Ruger holds 95 grains of Superformance or 89 grains of RL 19 to the bottom of the neck. My Savage detachable box is 3.49" inside and I load Speer 270's and Sierra 300's to 3.45" without jamming the rifling. They feed up just fine even though they are 0.110" longer than SAAMI max-COAL. I don't know what powder capacity you are aiming for but 90 grains is a bunch and the Ruger case can accommodate all of that. I have an unfired test load for the Speer 270 that is 3.4" COAL w/ 86.5 grains of Superformance and there is still room in the case. That COAL puts the bearing surface of the bullet shank even with the neck/shoulder junction for maximum bullet support. Only the Boat Tail is in the powder space - and with room still left over.</p><p></p><p>As for velocity, I just started with the Nosler 260 AB and 79.5 grains of WW760 drives it 3022 fps Av w/ a SD of 9 fps. But it is a 26" tube and that load is absolute max. Hodgdon's lists the pressure @ 61 Kpsi and my Pressure Trace II confirms it. I could use a lot more WW760 but the load cannot be increased. My next powder will be RL 19 or maybe Superformance. I would like to try Ramshot Hunter but cannot find any.</p><p></p><p>Good luck on your wildcat but those who sell the 375 Ruger short don't own one. It was designed by Hornady to match the 375 H&H.... but with a 20" barrel. To do that it burns 9-10 grains more powder. The 375 RUM is really the next step up. Look at it this way 375 H&H = 80 grains, 375 Ruger = 90 grains and 375 RUM = 100 grains. Only the Ruger fits a standard length action.</p><p></p><p>Just my experience so far. Bought the Savage in 375 Ruger to deliver a ton (2000 ftlbs) @ 500 yards. The Nosler 260 AB @ 3022 fps delivers it out to 630 yards... mission accomplished!</p><p></p><p>KB</p></blockquote><p></p>
[QUOTE="Kennibear, post: 897665, member: 51650"] 80Rooster I currently own a 26" barreled Savage in 375 Ruger. I have worked with the 68mm Mannlicher case in 6.5 and it's base diameter is 0.010" smaller. The shoulder of the 8X68 MS is a gentle 14 1/2 degrees and shorter than the Ruger to the shoulder and about as long to the shoulder neck junction. The 6.5X68 MS has a lot more case capacity than the 264 WinMag but I doubt the 68mm MS case is a match for the Ruger. That all being said the Ruger holds 95 grains of Superformance or 89 grains of RL 19 to the bottom of the neck. My Savage detachable box is 3.49" inside and I load Speer 270's and Sierra 300's to 3.45" without jamming the rifling. They feed up just fine even though they are 0.110" longer than SAAMI max-COAL. I don't know what powder capacity you are aiming for but 90 grains is a bunch and the Ruger case can accommodate all of that. I have an unfired test load for the Speer 270 that is 3.4" COAL w/ 86.5 grains of Superformance and there is still room in the case. That COAL puts the bearing surface of the bullet shank even with the neck/shoulder junction for maximum bullet support. Only the Boat Tail is in the powder space - and with room still left over. As for velocity, I just started with the Nosler 260 AB and 79.5 grains of WW760 drives it 3022 fps Av w/ a SD of 9 fps. But it is a 26" tube and that load is absolute max. Hodgdon's lists the pressure @ 61 Kpsi and my Pressure Trace II confirms it. I could use a lot more WW760 but the load cannot be increased. My next powder will be RL 19 or maybe Superformance. I would like to try Ramshot Hunter but cannot find any. Good luck on your wildcat but those who sell the 375 Ruger short don't own one. It was designed by Hornady to match the 375 H&H.... but with a 20" barrel. To do that it burns 9-10 grains more powder. The 375 RUM is really the next step up. Look at it this way 375 H&H = 80 grains, 375 Ruger = 90 grains and 375 RUM = 100 grains. Only the Ruger fits a standard length action. Just my experience so far. Bought the Savage in 375 Ruger to deliver a ton (2000 ftlbs) @ 500 yards. The Nosler 260 AB @ 3022 fps delivers it out to 630 yards... mission accomplished! KB [/QUOTE]
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.375 Norma
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