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Rifles, Reloading, Optics, Equipment
Reloading
Help .010 off the lands??????
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<blockquote data-quote="boomtube" data-source="post: 332638" data-attributes="member: 9215"><p>What the above posters are saying is that you first have to find where the lands meets your bullet, then back off what ever amount you wish. </p><p> </p><p>Several ways of doing that max OAL thing; the split case and soft seated bullet is one or you can simply use a wood dowel rod that will slide down the bore as I do. Close the bolt and use a knife blade to mark the rod square across at the muzzle. The remove the bolt, push the bullet you plan to use into the end of the chamber and hold it there, snugly against the lands, with a pencil. Push the dowel to contact the bullet point and mark it again. Measure between the two marks and that's your max OAL in THAT chamber and with THAT bullet. (I have both the Hornady Case Length tools and RCBS Precision Case Mic tools. Both types work okay but I have gone back to the old way because I find it consistantly more accurate.)</p><p> </p><p>Seat THAT bullet, the same one, in a sized but empty case at that exact length. Keep it for a reference gage. Then load your ammo and make it ten thou, or whatever you wish, less.</p><p> </p><p>You may not like the results of seating so close to the lands. Most factory rifles seem to prefer from .030" to four times that much jump. Many sporting rifle chambers won't even allow light-for-caliber bullets to be seated that far out. </p><p> </p><p>Seating at, or even near, the lands is really a BR techique for use with their lightly held bullets. It makes up for their lack of any significant bullet pull/tension. Sporting ammo would likely come apart with routine handling if we load as the BR crowd does so loading long has little to offer us. AND, doing so can cause it's own problems.</p></blockquote><p></p>
[QUOTE="boomtube, post: 332638, member: 9215"] What the above posters are saying is that you first have to find where the lands meets your bullet, then back off what ever amount you wish. Several ways of doing that max OAL thing; the split case and soft seated bullet is one or you can simply use a wood dowel rod that will slide down the bore as I do. Close the bolt and use a knife blade to mark the rod square across at the muzzle. The remove the bolt, push the bullet you plan to use into the end of the chamber and hold it there, snugly against the lands, with a pencil. Push the dowel to contact the bullet point and mark it again. Measure between the two marks and that's your max OAL in THAT chamber and with THAT bullet. (I have both the Hornady Case Length tools and RCBS Precision Case Mic tools. Both types work okay but I have gone back to the old way because I find it consistantly more accurate.) Seat THAT bullet, the same one, in a sized but empty case at that exact length. Keep it for a reference gage. Then load your ammo and make it ten thou, or whatever you wish, less. You may not like the results of seating so close to the lands. Most factory rifles seem to prefer from .030" to four times that much jump. Many sporting rifle chambers won't even allow light-for-caliber bullets to be seated that far out. Seating at, or even near, the lands is really a BR techique for use with their lightly held bullets. It makes up for their lack of any significant bullet pull/tension. Sporting ammo would likely come apart with routine handling if we load as the BR crowd does so loading long has little to offer us. AND, doing so can cause it's own problems. [/QUOTE]
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Help .010 off the lands??????
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