#3168177 - 02/18/13 05:56 AM
Re: Different specs between manuals ?
[Re: MUP]
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Model70Man
12 Point
Registered: 09/30/05
Posts: 6102
Loc: Knoxville, TN
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Many times you will see .223 AR and .223 Bolt action. That could be the difference in length.
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#3168204 - 02/18/13 06:52 AM
Re: Different specs between manuals ?
[Re: Model70Man]
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KPH
8 Point
Registered: 08/06/05
Posts: 1668
Loc: Hendersonville Tenn
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It will also depend on what bullet is used being different shapes. There may be some other factors
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#3168236 - 02/18/13 07:27 AM
Re: Different specs between manuals ?
[Re: KPH]
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EastTNHunter
8 Point
Registered: 03/08/10
Posts: 1193
Loc: Rhea Co., TN
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It will also depend on what bullet is used being different shapes. There may be some other factors
What he said. A different ogive will cause the bullet to contact the lands at different lengths, even within the same weights. But remember, the COAL in manuals is really only a "suggestion" based on a SAAMI spec chamber.
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#3168260 - 02/18/13 07:46 AM
Re: Different specs between manuals ?
[Re: EastTNHunter]
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rdl65
8 Point
Registered: 03/08/08
Posts: 2228
Loc: Washington County
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The manuals are all printed on the safe side. OAL is suggested at a certain length because it is the safest, and feeds the best for all rifles. If a cartridge will feed reliably and give good accuracy that is the OAL you need to load at.
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#3168290 - 02/18/13 08:12 AM
Re: Different specs between manuals ?
[Re: rdl65]
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MUP
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Registered: 08/01/07
Posts: 36181
Loc: Just North of Chatt-town
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Thanks guys. I checked the OAL on the factory ammo I have and it matched the Speer specs, so that's what I went with originally.
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MUP
Amateurs: Built the Ark
Professionals: Built the Titanic
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#3168472 - 02/18/13 10:49 AM
Re: Different specs between manuals ?
[Re: MUP]
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MUP
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Registered: 08/01/07
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Loc: Just North of Chatt-town
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Just wondering, what is the optimal distance to strive for between bullet and land anyway? Is it just different for different loads and barrels?
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MUP
Amateurs: Built the Ark
Professionals: Built the Titanic
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#3169138 - 02/18/13 08:27 PM
Re: Different specs between manuals ?
[Re: MUP]
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Jcalder
4 Point
Registered: 09/18/12
Posts: 151
Loc: Tennesse
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Every bullet is different. I think Berger bullets prefer to be crammed into he lands. Personally I prefer just off the lands. And what works in one gun may not work in another
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#3169446 - 02/19/13 07:43 AM
Re: Different specs between manuals ?
[Re: Jcalder]
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MUP
Non-Typical
Registered: 08/01/07
Posts: 36181
Loc: Just North of Chatt-town
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How do you adjust for each particular barrel land distance? Just drop the loaded bullet into the chamber and measure till it seats or what?
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MUP
Amateurs: Built the Ark
Professionals: Built the Titanic
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55gr btw
