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Rifles, Reloading, Optics, Equipment
Reloading
Need technical input: rifle project based on 7LRM cartridge necked to .277
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<blockquote data-quote="P7M13" data-source="post: 2023794" data-attributes="member: 94154"><p>Nothing wrong with the 7LRM. But, neck down a 7LRM to a 277 and you have a barrel roaster. Not nearly as bad as a 7 RUM or 28 Nosler. Necks don't mean squat as to barrel life. It's the flame behind the bullet that determines that.</p><p>If there's a 270 WSM, compare those ballistics.</p><p>There's an optimal powder charge weight for every caliber, and I think [USER=13833]@elkaholic[/USER] attempts to do that with his Sherman chamberings.</p><p>Blowing out the shoulder to 40° should increase capacity and minimize trimmings needed.</p><p>You could also take a 6.5 PRC, neck up, Ackley-ize it.</p><p>Any way you do it, you'll have fun. Don't mind the drain hole you punched into your bank account in the process - it's a buzzkill.</p><p>If you can help it, don't use Hornady brass either.</p></blockquote><p></p>
[QUOTE="P7M13, post: 2023794, member: 94154"] Nothing wrong with the 7LRM. But, neck down a 7LRM to a 277 and you have a barrel roaster. Not nearly as bad as a 7 RUM or 28 Nosler. Necks don't mean squat as to barrel life. It's the flame behind the bullet that determines that. If there's a 270 WSM, compare those ballistics. There's an optimal powder charge weight for every caliber, and I think [USER=13833]@elkaholic[/USER] attempts to do that with his Sherman chamberings. Blowing out the shoulder to 40° should increase capacity and minimize trimmings needed. You could also take a 6.5 PRC, neck up, Ackley-ize it. Any way you do it, you'll have fun. Don't mind the drain hole you punched into your bank account in the process - it's a buzzkill. If you can help it, don't use Hornady brass either. [/QUOTE]
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Reloading
Need technical input: rifle project based on 7LRM cartridge necked to .277
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