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The Basics, Starting Out
Beginner help with zeroing and seating/jump
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<blockquote data-quote="royinidaho" data-source="post: 1012165" data-attributes="member: 2011"><p>Bast, someone's blowin' smoke up your pipes.....</p><p></p><p>On my 338 RUM shooting 300 Bergers @ 2735 I cranked on the torque head wrench on the ring bolts on Leupold rings harden enough to get a half twist in the torques head. Looks more like a screw than a wrench.</p><p></p><p>That was what it took to keep the scope from slipping, because of the brake I suppose. :roll eyes:</p><p></p><p>If you are shooting 3 foot by 4 foot groups it ain't your loads that are the problem.</p><p></p><p>Either you're flinching like your sitting on Tannerite or you gun is broke in some way.</p><p></p><p>If you're north of Pgh search on here for jmason. He's in Wampum. Get together with him or someone w/some experience (not a western PA "deer hunter" or shade tree 'canic. There's gotta be someone on your side of the state with the right kind of knowledge.</p><p></p><p>Do a search on Eric of Berger fame's discussion on seating Berger bullets. It works for other bullets also, some times.<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>I was having similar problems (excessive group size) in a custom gun. Turns out after tearing it completely down, twice, the problem was the dummy doing the reloading. The idiot completely neglected to remember to check case length. When ya load hot, even with steep shoulder angles, they stretch.</p><p></p><p>Bad groups all the time and excessive high pressures once in awhile finally woke me up. Some cases were 0.01 too long. The case was grabbing the bullet upon firing. Velocity jumped as much as 250 FPS and bolt lift and extraction was done with a plastic hammer.</p><p></p><p>She's now back to her 0.5 MOA or less. And I only used close to 80 rounds of powder bullets and barrel life. I think I'll go back on my meds.....<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p><p></p><p>Usually I'm not so dumb, but there are times....<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /></p></blockquote><p></p>
[QUOTE="royinidaho, post: 1012165, member: 2011"] Bast, someone's blowin' smoke up your pipes..... On my 338 RUM shooting 300 Bergers @ 2735 I cranked on the torque head wrench on the ring bolts on Leupold rings harden enough to get a half twist in the torques head. Looks more like a screw than a wrench. That was what it took to keep the scope from slipping, because of the brake I suppose. :roll eyes: If you are shooting 3 foot by 4 foot groups it ain't your loads that are the problem. Either you're flinching like your sitting on Tannerite or you gun is broke in some way. If you're north of Pgh search on here for jmason. He's in Wampum. Get together with him or someone w/some experience (not a western PA "deer hunter" or shade tree 'canic. There's gotta be someone on your side of the state with the right kind of knowledge. Do a search on Eric of Berger fame's discussion on seating Berger bullets. It works for other bullets also, some times.:) I was having similar problems (excessive group size) in a custom gun. Turns out after tearing it completely down, twice, the problem was the dummy doing the reloading. The idiot completely neglected to remember to check case length. When ya load hot, even with steep shoulder angles, they stretch. Bad groups all the time and excessive high pressures once in awhile finally woke me up. Some cases were 0.01 too long. The case was grabbing the bullet upon firing. Velocity jumped as much as 250 FPS and bolt lift and extraction was done with a plastic hammer. She's now back to her 0.5 MOA or less. And I only used close to 80 rounds of powder bullets and barrel life. I think I'll go back on my meds.....:D Usually I'm not so dumb, but there are times....:rolleyes: [/QUOTE]
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Beginner help with zeroing and seating/jump
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