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308 O.A.L. info , Please ?

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308 O.A.L. info , Please ? was created by bodenspop9

If any of You have a armalite ar/10t with 16 inch barrel, 762/51. And owen a hornady LnL O.A.L. gauge. That lets You Measure the bullets free travel. Please let Me know what Your free space is. I have checked My rifle Yesterday after getting My tool in mail, with a 168gr. S.M.K. and come up with a tenth of an inch. This seams like a lot to Me. ?? But I have tested a few times, Comes up the same . As a 308 has a max O.A.L. of 2.810. This means a O.A.L. of 2.910 would fit My chamber. NO, I would never load near that #,And anything over 2.825 may not fit the clip. Just sounds like a big bullet Jump to Me. ?? Any of You hand loaders please weigh in with Your thoughts. Thanks.
10 years 10 months ago #24981

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Replied by jtallen83 on topic 308 O.A.L. info , Please ?

I just put it out of my mind when I decided on an AR-10. It made it simple for me, 2.80 overall length, period. After the great accuracy I've gotten from my rifle I'm beggining to question just how much this "free bore" matters.
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Last edit: 10 years 10 months ago by jtallen83.
10 years 10 months ago #24985

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Replied by bodenspop9 on topic 308 O.A.L. info , Please ?

Thanks for the input , Jtallen83. I'm not killing My brain over this, Just wondering if this amount of free bore is normal for these rifles. I have been going with 2.825. Been working well. That's about max for fitting the mag.
10 years 10 months ago #24992

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Replied by SOC on topic 308 O.A.L. info , Please ?

Anything under .10 freebore seems to be noticeably more accurate.

210gn Burger VLD hunting bullets have about .085 freebore in my AR-10TU when loaded to max length for the mags.

COL for the 300 RSAUM and 308 are the same.
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10 years 10 months ago #24995

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Replied by Lizardette on topic 308 O.A.L. info , Please ?

In a standard 7.62x51mm chamber, that's actually comparatively tight. Match chambers usually have less leade, but tight tolerances can become problematic in a semi-auto.
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10 years 10 months ago #25000

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