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Rifles, Reloading, Optics, Equipment
Reloading
Seating depth affect???
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<blockquote data-quote="BallisticsGuy" data-source="post: 1767209" data-attributes="member: 96226"><p>No, you should understand clearly that your gun is chambered with a factory chamber with a hot-dog-in-a-hallway throat so it'll accept any factory ammo you could stuff in it and that that leads to long jumps and that long jumps are notoriously bad for groups. That's what you call "boned".</p><p></p><p>There are a few ways of attacking the issue but the fundamental issue is you have a factory cut super long throated chamber. All of the fixes are going to focus on getting the bullet ogive closer to the lands through whatever means.</p><p></p><p>My advice, you might want to select a local gunsmith to lop half an inch off the back end of your barrel, re-thread and shoulder the tenon and then re-cut the chamber with a reamer with a throat of correct length to provide you .030 jump with 150gr bullets seated to mag length -.030 provided that you want to run 150's. That should provide you with a setup that you can shoot darned near forever and still chase the lands a bit but not get out of mag length for a HUGE number of rounds. .308's in my experience are pretty mellow on throats, unlike 6mm and 6.5 which seem to be racist against barrel throats.</p><p></p><p>You could also try finding some heavier bullets or bullets with a shorter nose cone and longer bearing surface. I doubt that this will work for you and still be mag length.</p></blockquote><p></p>
[QUOTE="BallisticsGuy, post: 1767209, member: 96226"] No, you should understand clearly that your gun is chambered with a factory chamber with a hot-dog-in-a-hallway throat so it'll accept any factory ammo you could stuff in it and that that leads to long jumps and that long jumps are notoriously bad for groups. That's what you call "boned". There are a few ways of attacking the issue but the fundamental issue is you have a factory cut super long throated chamber. All of the fixes are going to focus on getting the bullet ogive closer to the lands through whatever means. My advice, you might want to select a local gunsmith to lop half an inch off the back end of your barrel, re-thread and shoulder the tenon and then re-cut the chamber with a reamer with a throat of correct length to provide you .030 jump with 150gr bullets seated to mag length -.030 provided that you want to run 150's. That should provide you with a setup that you can shoot darned near forever and still chase the lands a bit but not get out of mag length for a HUGE number of rounds. .308's in my experience are pretty mellow on throats, unlike 6mm and 6.5 which seem to be racist against barrel throats. You could also try finding some heavier bullets or bullets with a shorter nose cone and longer bearing surface. I doubt that this will work for you and still be mag length. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Seating depth affect???
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