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top 3 neck bushing sizes for 308?
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Re: top 3 neck bushing sizes for 308?
I use .335" for lapua brass (not neck turned). Was thinking that was .002" under loaded round thickness.
I use .335" for lapua brass (not neck turned). Was thinking that was .002" under loaded round thickness.
Re: top 3 neck bushing sizes for 308?
I use a .339 as an intermediate step down so you don't get excessive runout, a .335 for Lapua and a .331 for Hornady and BH/Win. I also have .336, .334, .333, and .330 for others or incase the necks thin. I like .002" neck tension on the .308 from a bolt gun.
I use a .339 as an intermediate step down so you don't get excessive runout, a .335 for Lapua and a .331 for Hornady and BH/Win. I also have .336, .334, .333, and .330 for others or incase the necks thin. I like .002" neck tension on the .308 from a bolt gun.
Re: top 3 neck bushing sizes for 308?
I use the .336 titanium bushing on my 308 lapua brass. It's very consistent at .015 at the neck so I don't turn my necks.
I'm looking at .002" neck tension. Just perfect.
xdeano
I use the .336 titanium bushing on my 308 lapua brass. It's very consistent at .015 at the neck so I don't turn my necks.
I'm looking at .002" neck tension. Just perfect.
xdeano
Re: top 3 neck bushing sizes for 308?
Yes, because different manufaures brass have different thickness of necks.
Yes, because different manufaures brass have different thickness of necks.
Re: top 3 neck bushing sizes for 308?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Winchester 69</div><div class="ubbcode-body">Looks like the top three are .336, .335 and .333. </div></div>
Like Rob01 states above, I also use a step down bushing, as my factory chamber blows out my necks to ~.344". Some feel any more than a .005" constriction at a time can effect spring back. Redding mentions .007"-.008" as being the largest step one should go.
I went nuts and got some 308 bushings for a good deal, so I'll usually go .340">.336" or .335" for the brass I'm using. I had some thin Winchester that .332" would barely take care of, so I went .340">.336">.332".
I don't know if I shot those rounds any better, but getting one large one, a .339" or a .340" is probably a good idea, then get them for whatever brass you plan on using.
Chris
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Winchester 69</div><div class="ubbcode-body">Looks like the top three are .336, .335 and .333. </div></div>
Like Rob01 states above, I also use a step down bushing, as my factory chamber blows out my necks to ~.344". Some feel any more than a .005" constriction at a time can effect spring back. Redding mentions .007"-.008" as being the largest step one should go.
I went nuts and got some 308 bushings for a good deal, so I'll usually go .340">.336" or .335" for the brass I'm using. I had some thin Winchester that .332" would barely take care of, so I went .340">.336">.332".
I don't know if I shot those rounds any better, but getting one large one, a .339" or a .340" is probably a good idea, then get them for whatever brass you plan on using.
Chris
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