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Rifles, Reloading, Optics, Equipment
Reloading
Calculating OAL
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<blockquote data-quote="Bart B" data-source="post: 737840" data-attributes="member: 5302"><p>Your rifle's chamber may well have a longer throat than normal. </p><p></p><p>Are you sure it's a Sierra 3156 bullet? Their web site lists the 155-gr. match bullet as a 2156. And that bullet will not reach the lands in many commercial sporting rifles even when barely held by the case neck.</p><p></p><p>Here's what you can do. </p><p></p><p>First....Seat a bullet in an empty sized case, then chamber it. Push a small rod down the bore until it stops against the bullet tip. Mark the rod at the muzzle. Pull the rod out then measure the mark to the end of the rod that stopped against the bullet.</p><p></p><p>Second....Remove the bolt, point the rifle muzzle down then drop in one of those bullets so it falls into the chamber and stops against the rifling at the front of the chamber. Put something in the chamber to hold the bullet firmly in place, then put that rod gently back down the muzzle until it stops against the bullet. Mark it at the muzzle.</p><p></p><p>Third....compare the difference between the two marks. That shows the difference between the seated bullet's tip in the test case and where the bullet actually first touches the rifling. It may be 2/10ths of an inch between the two marks. But at least, it'll let you know the situation.</p></blockquote><p></p>
[QUOTE="Bart B, post: 737840, member: 5302"] Your rifle's chamber may well have a longer throat than normal. Are you sure it's a Sierra 3156 bullet? Their web site lists the 155-gr. match bullet as a 2156. And that bullet will not reach the lands in many commercial sporting rifles even when barely held by the case neck. Here's what you can do. First....Seat a bullet in an empty sized case, then chamber it. Push a small rod down the bore until it stops against the bullet tip. Mark the rod at the muzzle. Pull the rod out then measure the mark to the end of the rod that stopped against the bullet. Second....Remove the bolt, point the rifle muzzle down then drop in one of those bullets so it falls into the chamber and stops against the rifling at the front of the chamber. Put something in the chamber to hold the bullet firmly in place, then put that rod gently back down the muzzle until it stops against the bullet. Mark it at the muzzle. Third....compare the difference between the two marks. That shows the difference between the seated bullet's tip in the test case and where the bullet actually first touches the rifling. It may be 2/10ths of an inch between the two marks. But at least, it'll let you know the situation. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Calculating OAL
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