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<blockquote data-quote="trebark" data-source="post: 562444" data-attributes="member: 19172"><p>Abe:</p><p>You have two very nice rifles to use for a custom longrange build. As you stated, the weak points in both rifles is barrel, action and loads.</p><p> </p><p>Are they shooting .5moa or better at 200yards? if so, why make any changes?</p><p> </p><p>Let me take a crack at some of your general questions....</p><p> </p><p><strong><u>Barrels</u></strong></p><p><em>Length:</em> generally speaking, the longer the barrel, the more velocity you can get. If your barrel gets too long though, it can become cumbersome. Generally speaking, a longrange rig has a barrel in the 26 to 32" range.</p><p> </p><p><em>Taper:</em> The heavier the barrel, the stiffer it will be. Stiffer barrels are generally more accurate. Downside of a heavy taper is that it makes the overall package heavier. This is not a problem for a dedicated longrange rig where you will carry your rifle to a shooting position and set up. If you intend the carry the rifle, weight can become an issue. My carry rifle weighs 9lbs. My dedicated longrange rigs weight 14 and 16lbs.</p><p></p><p><em>Twist:</em> What ever caliber you choose, use a twist rate that will allow you to shoot the heaviest bullet. In your particular case, a 7mm will generally have a 1:9 twist as it will stabilize the 180grain bullets. A 1:11 twist will take care of the the 30cal bullets up to 210grains. If you want to shoot the new Berger 230grain hybrid, you will need 1:10.</p><p> </p><p><strong><u>Actions</u></strong></p><p>Your Rem700 actions are some of the best in the business. Many of the custom actions that are out there are just Rem700 clones.</p><p> </p><p>Since you have seen the video of truing an action, there's not much more that I can add. If you do rebarrel your rifle(s), have the actions trued/blueprinted (interchangable terms)</p><p> </p><p><strong><u>Loads</u></strong></p><p>Handload, handload, handload. By handloading you are able to customize your ammunition to your rifle and the task at hand. Handloading is something that you can do and you should do.</p><p> </p><p>In load development, I take a reverse engineering type of approach. Which is to say I start with the intended use (hunting big game, varmints, targets). Once that decision is made, I consider the bullet I would 'like' to shoot. Then I start to work on getting that bullet to work in my rifle.</p><p> </p><p>One thing that will help the members of this forum with your projects is to narrow your focus a bit. Rather than querying about both rifles, take one at a time. Tell us about your intended use for the rifle and if you have any type of budgetary constraints.</p><p> </p><p>Keep the questions coming.</p><p> </p><p>As a potential point(s) of reference, here are links to my carry rifle and two dedicated longrange rigs:</p><p> </p><p><a href="http://www.longrangehunting.com/forums/f53/my-280-updated-32771/" target="_blank">http://www.longrangehunting.com/forums/f53/my-280-updated-32771/</a></p><p> </p><p><a href="http://www.longrangehunting.com/forums/f53/my-260-mcr-59628/" target="_blank">http://www.longrangehunting.com/forums/f53/my-260-mcr-59628/</a></p><p> </p><p><a href="http://www.longrangehunting.com/forums/f53/my-300rum-mcr-70809/#post494570" target="_blank">http://www.longrangehunting.com/forums/f53/my-300rum-mcr-70809/#post494570</a></p></blockquote><p></p>
[QUOTE="trebark, post: 562444, member: 19172"] Abe: You have two very nice rifles to use for a custom longrange build. As you stated, the weak points in both rifles is barrel, action and loads. Are they shooting .5moa or better at 200yards? if so, why make any changes? Let me take a crack at some of your general questions.... [B][U]Barrels[/U][/B] [I]Length:[/I] generally speaking, the longer the barrel, the more velocity you can get. If your barrel gets too long though, it can become cumbersome. Generally speaking, a longrange rig has a barrel in the 26 to 32" range. [I]Taper:[/I] The heavier the barrel, the stiffer it will be. Stiffer barrels are generally more accurate. Downside of a heavy taper is that it makes the overall package heavier. This is not a problem for a dedicated longrange rig where you will carry your rifle to a shooting position and set up. If you intend the carry the rifle, weight can become an issue. My carry rifle weighs 9lbs. My dedicated longrange rigs weight 14 and 16lbs. [I]Twist:[/I] What ever caliber you choose, use a twist rate that will allow you to shoot the heaviest bullet. In your particular case, a 7mm will generally have a 1:9 twist as it will stabilize the 180grain bullets. A 1:11 twist will take care of the the 30cal bullets up to 210grains. If you want to shoot the new Berger 230grain hybrid, you will need 1:10. [B][U]Actions[/U][/B] Your Rem700 actions are some of the best in the business. Many of the custom actions that are out there are just Rem700 clones. Since you have seen the video of truing an action, there's not much more that I can add. If you do rebarrel your rifle(s), have the actions trued/blueprinted (interchangable terms) [B][U]Loads[/U][/B] Handload, handload, handload. By handloading you are able to customize your ammunition to your rifle and the task at hand. Handloading is something that you can do and you should do. In load development, I take a reverse engineering type of approach. Which is to say I start with the intended use (hunting big game, varmints, targets). Once that decision is made, I consider the bullet I would 'like' to shoot. Then I start to work on getting that bullet to work in my rifle. One thing that will help the members of this forum with your projects is to narrow your focus a bit. Rather than querying about both rifles, take one at a time. Tell us about your intended use for the rifle and if you have any type of budgetary constraints. Keep the questions coming. As a potential point(s) of reference, here are links to my carry rifle and two dedicated longrange rigs: [URL]http://www.longrangehunting.com/forums/f53/my-280-updated-32771/[/URL] [URL]http://www.longrangehunting.com/forums/f53/my-260-mcr-59628/[/URL] [URL]http://www.longrangehunting.com/forums/f53/my-300rum-mcr-70809/#post494570[/URL] [/QUOTE]
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