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Throat burned out or not???
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<blockquote data-quote="Mike 338" data-source="post: 1529917" data-attributes="member: 41338"><p>I agree with a seating depth test before you give up on it. In fact, a "rough" seating depth test is one of the very first things I do. I start with an arbitrary powder charge, a good 2% below max-load. Then load 5 shot strings of bullets seated an varying seating depths. This is a "rough" seating depth test. It's done in .040" increments. With all that freebore, you won't be able to reach the lands and frankly, shouldn't even try because that's how Weatherby's are made. Just start at maximum magazine length and load up 5 shots at maximum magazine length. Then load up the next string of 5, pushing the bullet .040" deeper into the case. Keep doing that until you've gone as far as the bullet allows. I usually get about 4 different seating depths, totaling .160" range of depths. You may not have that much wiggle room because your limited to mag length so you may get only three. Anyway... one of those strings will likely shoot better than the others. Don't think that seating a bullet right up to the lands automatically delivers the best accuracy. Often, a big jump is the secret sauce. The target will reveal the truth. When you determine a "rough" seating depth that performs better than the others, do a primer test with that particular load. Go to the store and buy a small amount of every type of primer you can find that will fit in your case and test each one. Often, primers can have no effect on accuracy but occasionally, they can make all the difference and instantly cut your groups in half. If your results look like they may be promising, you can go back and fine tune the powder charge and possibly make little adjustments to seating depth.</p><p></p><p>Oh, and use a bullet and powder that are known to do well in your caliber. Nothing to extreme. Crazy hot powders and long-for-caliber bullets can muddy up things when your trying to sort out a problem.</p><p></p><p>I have a 338 Win Mag that I can seat bullets right up to the lands but when I did, I got 2-1/2" groups. Turns out, the gun likes a jump of about .225". I wouldn't have known that if I did tiny seating depth tests. Now it shoots sub-moa.</p></blockquote><p></p>
[QUOTE="Mike 338, post: 1529917, member: 41338"] I agree with a seating depth test before you give up on it. In fact, a "rough" seating depth test is one of the very first things I do. I start with an arbitrary powder charge, a good 2% below max-load. Then load 5 shot strings of bullets seated an varying seating depths. This is a "rough" seating depth test. It's done in .040" increments. With all that freebore, you won't be able to reach the lands and frankly, shouldn't even try because that's how Weatherby's are made. Just start at maximum magazine length and load up 5 shots at maximum magazine length. Then load up the next string of 5, pushing the bullet .040" deeper into the case. Keep doing that until you've gone as far as the bullet allows. I usually get about 4 different seating depths, totaling .160" range of depths. You may not have that much wiggle room because your limited to mag length so you may get only three. Anyway... one of those strings will likely shoot better than the others. Don't think that seating a bullet right up to the lands automatically delivers the best accuracy. Often, a big jump is the secret sauce. The target will reveal the truth. When you determine a "rough" seating depth that performs better than the others, do a primer test with that particular load. Go to the store and buy a small amount of every type of primer you can find that will fit in your case and test each one. Often, primers can have no effect on accuracy but occasionally, they can make all the difference and instantly cut your groups in half. If your results look like they may be promising, you can go back and fine tune the powder charge and possibly make little adjustments to seating depth. Oh, and use a bullet and powder that are known to do well in your caliber. Nothing to extreme. Crazy hot powders and long-for-caliber bullets can muddy up things when your trying to sort out a problem. I have a 338 Win Mag that I can seat bullets right up to the lands but when I did, I got 2-1/2" groups. Turns out, the gun likes a jump of about .225". I wouldn't have known that if I did tiny seating depth tests. Now it shoots sub-moa. [/QUOTE]
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Throat burned out or not???
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