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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throating question
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<blockquote data-quote="AZShooter" data-source="post: 572558" data-attributes="member: 5219"><p>Another factor that seems to be important is the throat angle.</p><p></p><p> Dave Kiff at Pacific Tool and Gauge recommended a 1 degree 30 min throat angle for the VLDs. It worked very well with a 257 Weatherby and a 7 Rem mag I had chambered. The Weatherby still had some freebore but less than the original Weatherby design. We made five rifles with the 257 Weatherby reamer and chose the longest OAL possible with good feeding from each rifle's magazine. Bullet jump was .070" to .100" and accuracy was great with the 115 VLDs. The 7 Rem mag had the 180 VLDs into the rifling .030" yet still fed fine. A loaded round could also be removed without upsetting the bullet's original seating depth. </p><p></p><p>Since using these two reamers I come to the conclusion that I won't have just any reamer a gunsmith has on hand to make a chamber. I prefer to have one made to my specs for bullet seating depth ( as previous poster mentioned) and throat angle. Typically I made a dummy round and ship it to Dave with some detailed instructions. Naturally I talk to Dave and ask pertinent questions before shipping. This approach has worked well with 12 reamers my friend and I own all made by Pacific Tool and Gauge.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 572558, member: 5219"] Another factor that seems to be important is the throat angle. Dave Kiff at Pacific Tool and Gauge recommended a 1 degree 30 min throat angle for the VLDs. It worked very well with a 257 Weatherby and a 7 Rem mag I had chambered. The Weatherby still had some freebore but less than the original Weatherby design. We made five rifles with the 257 Weatherby reamer and chose the longest OAL possible with good feeding from each rifle's magazine. Bullet jump was .070" to .100" and accuracy was great with the 115 VLDs. The 7 Rem mag had the 180 VLDs into the rifling .030" yet still fed fine. A loaded round could also be removed without upsetting the bullet's original seating depth. Since using these two reamers I come to the conclusion that I won't have just any reamer a gunsmith has on hand to make a chamber. I prefer to have one made to my specs for bullet seating depth ( as previous poster mentioned) and throat angle. Typically I made a dummy round and ship it to Dave with some detailed instructions. Naturally I talk to Dave and ask pertinent questions before shipping. This approach has worked well with 12 reamers my friend and I own all made by Pacific Tool and Gauge. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throating question
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