308 O.A.L. info , Please ?

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11 years 5 months ago #24981 by bodenspop9
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.

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11 years 5 months ago - 11 years 5 months ago #24985 by jtallen83
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.
Last edit: 11 years 5 months ago by jtallen83.
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11 years 5 months ago #24992 by bodenspop9
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.

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11 years 5 months ago #24995 by SOC
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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11 years 5 months ago #25000 by Lizardette
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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