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Reloading Berger Bullets


300 rum o.a.l.

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Unread 04-12-2005, 05:12 PM
Junior Member
Join Date: Mar 2005
Posts: 7
300 rum o.a.l.

i have a remington 700 in 300 rum ,what is the max oal i should make my cartidge? thanks in advance for the info
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    Unread 04-12-2005, 07:14 PM
    Platinum Member
    Join Date: Jun 2001
    Location: Palmer, Alaska
    Posts: 2,539
    Re: 300 rum o.a.l.

    The max length that will fit in the mag box, or shorter if the bullet contacts the rifling, which is not likely. Mine contacts the rifling at about 3.830 with a 200gr Accubond but my max length is 3.660-3.665 as anything longer will not fit in the mag box. BTW, the 200gr Accubond with about ~90gr Retumbo shoots awesome when seated to fit the box at 3.660". Max load is slightly higher though.
    Brent Moffitt
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    Unread 04-12-2005, 09:16 PM
    Silver Member
    Join Date: Jun 2004
    Location: PA
    Posts: 139
    Re: 300 rum o.a.l.

    I second what Brent said. I seat the Accubond right at 3.660 and its very accurate unless you want to single shot it you can get it closer to the rifling. I have a 220gr SMK load that is just off the lands and it won't even come close to fiting in the mag box. The rifling is a mile away in factory rifles.
    One Shot,One Kill.
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    Unread 04-12-2005, 10:35 PM
    Gold Member
    Join Date: Jan 2005
    Location: N.C
    Posts: 540
    Re: 300 rum o.a.l.

    You guys are right. I have the little brother 7RUM and I can't make most bullrts touch the rifleing and still be in the case neck. My mag box is a hair longer though cause I seat mine at 3.71 and still have 5 thou clearance. I think all the factory RUMs have a very long throat so not to cause excessive pressure by jamming a bullet into the riflings. I think weatherby also does or did it too on their big cals like the 300 weatherby and 30.378 and the 338.378. Dont quote me on that until someone that really knows what their talking about confirms it! Just seat them to fit the mag box is about the best you can do unless you want a single shot.
    Guns and ammo, what more do we need?
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