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Rifles, Reloading, Optics, Equipment
7mm STW
Peterson Brass Belted Mag Basic Unprimed Box of 50
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<blockquote data-quote="FEENIX" data-source="post: 2763936" data-attributes="member: 14204"><p>I am not trying to convince anyone that this is the best route. I am simply sharing my personal experience. I have done the COW method on my .30 Gibbs, shot .270 Win load for my .270 AI (I opted for two separate accuracy loads for this set-up). #60 is for my latest wildcat built. My first hydraulic forming die was by Whidden.</p><p></p><p>[ATTACH=full]444278[/ATTACH]</p><p></p><p>Below is my .30 LARA wildcat.</p><p></p><p>[ATTACH=full]444272[/ATTACH]</p><p>L-R</p><p>1- Virgin 8MM RM brass.</p><p>2- After running through the Whidden hydraulic forming die.</p><p>3- After running through the sizing die.</p><p>4- After fire formed off the chamber.</p><p></p><p>As you can see, #3 is close to #4, but it is the end-user's choice. After 1 firing with a 90% max load, most if not all of the brass for is attained. I never finalize any load development until after at least 1 firing of the chamber.</p><p></p><p>I originally was going to build a 300 RUM, but it was at the height of brass scarcity. The Whidden hydraulic forming die allowed me pre-form the following brass for my .30 LARA:</p><p></p><p>1. 8MM RM </p><p>2. 375 H&H</p><p>3. 300 H&H </p><p>4. 7MM STW</p><p>5. 358 STA</p><p>6. 416 RM</p><p>7. 300 Jarrett (very pricey)</p><p>8. 300 WBY </p><p>9. And now Peterson's brass</p><p></p><p>I can also shoot the .300 Jarrett and .300 WBY ammo.</p><p></p><p>It is not for everybody, but if the question is, is it worth it, to me, YES!</p></blockquote><p></p>
[QUOTE="FEENIX, post: 2763936, member: 14204"] I am not trying to convince anyone that this is the best route. I am simply sharing my personal experience. I have done the COW method on my .30 Gibbs, shot .270 Win load for my .270 AI (I opted for two separate accuracy loads for this set-up). #60 is for my latest wildcat built. My first hydraulic forming die was by Whidden. [ATTACH type="full"]444278[/ATTACH] Below is my .30 LARA wildcat. [ATTACH type="full"]444272[/ATTACH] L-R 1- Virgin 8MM RM brass. 2- After running through the Whidden hydraulic forming die. 3- After running through the sizing die. 4- After fire formed off the chamber. As you can see, #3 is close to #4, but it is the end-user's choice. After 1 firing with a 90% max load, most if not all of the brass for is attained. I never finalize any load development until after at least 1 firing of the chamber. I originally was going to build a 300 RUM, but it was at the height of brass scarcity. The Whidden hydraulic forming die allowed me pre-form the following brass for my .30 LARA: 1. 8MM RM 2. 375 H&H 3. 300 H&H 4. 7MM STW 5. 358 STA 6. 416 RM 7. 300 Jarrett (very pricey) 8. 300 WBY 9. And now Peterson's brass I can also shoot the .300 Jarrett and .300 WBY ammo. It is not for everybody, but if the question is, is it worth it, to me, YES! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
7mm STW
Peterson Brass Belted Mag Basic Unprimed Box of 50
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