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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7LRM (Long Range Magnum) - Pic & Info thread
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<blockquote data-quote="jrdp74" data-source="post: 1118516" data-attributes="member: 52806"><p>First post!</p><p></p><p>I was having a heck of a time getting my LRM to group over the last several weeks. I found this thread and a couple others on the forum and took what I could from it and I finally started getting the group sizes I was looking for. Thanks for all the great info!</p><p></p><p>I've noticed the neck thickness between brass I bought over a year ago and recently at about .002 difference (new cases smaller) and the case weights almost 12 grams apart. Once I started sorting the brass and playing with seating depth I was on the right track. The 168 Barnes LRX have always grouped pretty good as long as I seated them about .040 off the lands, at least putting 2 in the same hole. 180 Hybrids .060 off and 180 VLDs .040 off. As soon as I get over 3100 fps I start getting plunger marks on the case. Accuracy is great now running 3000 to 3050 with the Bergers. Again thanks for all the great info!! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>[ATTACH]51880[/ATTACH]</p><p>Hart 25.5 in 1:9 barrel</p><p>Harrel brake</p><p>Stiller Predator action</p><p>Jewell Trigger</p><p>McMillan Rem hunter Egde stock</p></blockquote><p></p>
[QUOTE="jrdp74, post: 1118516, member: 52806"] First post! I was having a heck of a time getting my LRM to group over the last several weeks. I found this thread and a couple others on the forum and took what I could from it and I finally started getting the group sizes I was looking for. Thanks for all the great info! I've noticed the neck thickness between brass I bought over a year ago and recently at about .002 difference (new cases smaller) and the case weights almost 12 grams apart. Once I started sorting the brass and playing with seating depth I was on the right track. The 168 Barnes LRX have always grouped pretty good as long as I seated them about .040 off the lands, at least putting 2 in the same hole. 180 Hybrids .060 off and 180 VLDs .040 off. As soon as I get over 3100 fps I start getting plunger marks on the case. Accuracy is great now running 3000 to 3050 with the Bergers. Again thanks for all the great info!! :) [ATTACH]51880.vB[/ATTACH] Hart 25.5 in 1:9 barrel Harrel brake Stiller Predator action Jewell Trigger McMillan Rem hunter Egde stock [/QUOTE]
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7LRM (Long Range Magnum) - Pic & Info thread
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