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7mm Rem mag OAL questions #6388172 07/30/16 03:27 PM
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Blanco Offline OP
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I have a Weatherby Vanguard 7Rem mag
Starting to work up some loads, and I figure I would check length with my Hormady LnL OAL gauge. I am loading a Speer spire flat base soft tip 145 gr. My max OAL ...and I checked it twice was 3.250 . This is pretty significantly less than the 3.29 the Lyman manual lists. SO... What now? I can live with that, but is this something to worry about?


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Re: 7mm Rem mag OAL questions [Re: Blanco] #6388175 07/30/16 03:34 PM
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Speer.1629 is the bullet


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Re: 7mm Rem mag OAL questions [Re: Blanco] #6388185 07/30/16 03:45 PM
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How did you arrive at the seating depth for the 145 Speer?

Re: 7mm Rem mag OAL questions [Re: Blanco] #6388215 07/30/16 04:29 PM
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The 3.250 measurement was with the LNL gauge with the Speer 145 in the Hornadymodified case.
The 3.29 measurement is from the Lyman manual listed as Max OAL


Confidence is going after a whale in a rowboat, and taking the tartar sauce with you!
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Re: 7mm Rem mag OAL questions [Re: Blanco] #6388229 07/30/16 04:43 PM
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sorry. I asked the question poorly. What made you seat the bullet to that length. Is that as far out as you can seat it without it contacting the rifling?

Re: 7mm Rem mag OAL questions [Re: Blanco] #6388234 07/30/16 04:48 PM
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Forget what the books say on Max OAL. That is for SAAMI, not handloaders. Load your bullet to the relation of the lands for your rifle.


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Re: 7mm Rem mag OAL questions [Re: Blanco] #6388288 07/30/16 05:47 PM
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Yes 3.25 is the farthest the bullet can be seated before making contact. Thanks Fireman that is what I suspected. I wonder what factory made ammo.is seated out to? I think I have a box of Remmi I will measure...


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Re: 7mm Rem mag OAL questions [Re: Blanco] #6388359 07/30/16 07:09 PM
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On second thought...2 bullets, same.cal with different ogive would have different max OAL ? Hmmmm


Confidence is going after a whale in a rowboat, and taking the tartar sauce with you!
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Re: 7mm Rem mag OAL questions [Re: Blanco] #6388984 07/31/16 08:58 AM
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I checked the new box of Remington ammo I have. The profile of the core lokt bullet is much more like a Berger. OAL 3.2 But with that profile there should be significant jump to the rifiling.


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Re: 7mm Rem mag OAL questions [Re: Blanco] #6388993 07/31/16 11:15 AM
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As long as you don't start out with your initial loads "jamming the lands," and your cartridges fit and feed through your magazines, you should not have to worry about OAL. If you want to load them out to reduce the jump, do it very carefully, in small increments, and check for any signs of pressure.

Re: 7mm Rem mag OAL questions [Re: Blanco] #6389021 07/31/16 12:32 PM
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I checked the Speer manual with that bullet and they show 3.280 which seems unusual that two manuals show OAL longer than your SAAMI chamber. I would triple check your measurement just to be sure and load accordingly. Also since you are seating deeper most definitely do not start at Max!


"Anyone taking up handloading necessarily plays with unknown factors and takes chances. But so does anyone who drives a car,goes to a cocktail party,eats in a restaurant,or gets married."

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Re: 7mm Rem mag OAL questions [Re: Blanco] #6389026 07/31/16 12:42 PM
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I think I will move this to the reloading section


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