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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
30" 257 Weatherby - What can I expect.
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<blockquote data-quote="AZShooter" data-source="post: 1967760" data-attributes="member: 5219"><p>Two of us made 28" 1 in 10 twist SS 3 groove Liljas with custom 257 Reamer. Bullet jump to lands was approx .100" with 1 1/2 degree throat angle. Moly coated 115 Berger VLD with max load of RL-25 per Nosler data for their 115 ballistic tip yielded 3650 or so. Norma brass primer pockets stayed tight through 3 firings. (never had opportunity to shoot the brass more than 3 times) Your results may not be this fast without moly and a bullet with little bearing surface. </p><p></p><p>Not sure you could get 4000 with a 100 gr bullet but bet you could with an 85 gr bullet. </p><p></p><p>Do yourself a favor and don't try too many bullet/powder combinations. Expect the barrel to not last much more than 1000 rounds. I wore out my first one and I never shot more than three shots before cooling. I rebarreled it myself using a 27 1/2" 3 groove lilja with RL-33. Getting 3680 fps with moly'd 115 VLD.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 1967760, member: 5219"] Two of us made 28" 1 in 10 twist SS 3 groove Liljas with custom 257 Reamer. Bullet jump to lands was approx .100" with 1 1/2 degree throat angle. Moly coated 115 Berger VLD with max load of RL-25 per Nosler data for their 115 ballistic tip yielded 3650 or so. Norma brass primer pockets stayed tight through 3 firings. (never had opportunity to shoot the brass more than 3 times) Your results may not be this fast without moly and a bullet with little bearing surface. Not sure you could get 4000 with a 100 gr bullet but bet you could with an 85 gr bullet. Do yourself a favor and don't try too many bullet/powder combinations. Expect the barrel to not last much more than 1000 rounds. I wore out my first one and I never shot more than three shots before cooling. I rebarreled it myself using a 27 1/2" 3 groove lilja with RL-33. Getting 3680 fps with moly'd 115 VLD. [/QUOTE]
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30" 257 Weatherby - What can I expect.
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