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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
30x6.5 RPM Wildcat Thoughts
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<blockquote data-quote="nicholasjohn" data-source="post: 1876425" data-attributes="member: 109113"><p>A couple of considerations for you : If it's important to you to be able to shoot factory ammo, or if you want the fire-forming process to be very simple, make sure you set up your 30-06 AI chamber to headspace properly on un-altered factory brass. A slight "crush fit" is important. When I first got mine years ago, its headspace was too long. I had to do the neck-up/neck-down process, and leave a secondary shoulder on the brass for safe head-spacing. This wasn't a huge deal, but it definitely wasn't safe to shoot with factory loads - some didn't even go bang. I had the barrel set back and corrected the issue, so now it's OK. </p><p></p><p>That said, the brass forming process isn't such a big deal if you don't mind spending the time to do it. When I was still employed, there was a lot of stuff I had to do to stay current in my profession, so it was an issue then. Now that I'm retired, and don't have to spend my off-hours doing job-related homework, it wouldn't be an issue for me at all. If I was going to have another one built today, I would lean toward the 300 Sherman - and do all the case-forming chores with 270 or 280 brass, instead of using 30-06 brass to make the Ackley Improved brass. As long as you're going to do the extra work, may as well have the extra performance - that's why you want an AI anyway. The Sherman should give you an extra 100+ fps boost over the 30-06 AI - maybe more. The neck length on the Sherman is plenty long enough; the neck on the 30-06 AI is really longer than necessary - and I <em>like</em> long-necked cartridges. If you're a big fan of Lapua brass, keep in mind that they don't make it in 270 or 280. I've been using Norma brass anyway, so that's not a thing for me. </p><p></p><p>The other thing that was a little out-of-spec on my 30-06 AI was the throat. The guy set it up with a Weatherby-style free-bore, <em>and that may be why mine gets the velocity it does.</em> I don't really know, because I have never had another one to compare it to. I thought you ought to know that before you jump in with both feet. I'd hate to see you get disappointed and find out that the performance improvement wasn't enough to make it worth the work. Good luck.</p></blockquote><p></p>
[QUOTE="nicholasjohn, post: 1876425, member: 109113"] A couple of considerations for you : If it's important to you to be able to shoot factory ammo, or if you want the fire-forming process to be very simple, make sure you set up your 30-06 AI chamber to headspace properly on un-altered factory brass. A slight "crush fit" is important. When I first got mine years ago, its headspace was too long. I had to do the neck-up/neck-down process, and leave a secondary shoulder on the brass for safe head-spacing. This wasn't a huge deal, but it definitely wasn't safe to shoot with factory loads - some didn't even go bang. I had the barrel set back and corrected the issue, so now it's OK. That said, the brass forming process isn't such a big deal if you don't mind spending the time to do it. When I was still employed, there was a lot of stuff I had to do to stay current in my profession, so it was an issue then. Now that I'm retired, and don't have to spend my off-hours doing job-related homework, it wouldn't be an issue for me at all. If I was going to have another one built today, I would lean toward the 300 Sherman - and do all the case-forming chores with 270 or 280 brass, instead of using 30-06 brass to make the Ackley Improved brass. As long as you're going to do the extra work, may as well have the extra performance - that's why you want an AI anyway. The Sherman should give you an extra 100+ fps boost over the 30-06 AI - maybe more. The neck length on the Sherman is plenty long enough; the neck on the 30-06 AI is really longer than necessary - and I [I]like[/I] long-necked cartridges. If you're a big fan of Lapua brass, keep in mind that they don't make it in 270 or 280. I've been using Norma brass anyway, so that's not a thing for me. The other thing that was a little out-of-spec on my 30-06 AI was the throat. The guy set it up with a Weatherby-style free-bore, [I]and that may be why mine gets the velocity it does.[/I] I don't really know, because I have never had another one to compare it to. I thought you ought to know that before you jump in with both feet. I'd hate to see you get disappointed and find out that the performance improvement wasn't enough to make it worth the work. Good luck. [/QUOTE]
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