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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Problems Grouping with my Thompson Center 300 Winchester Magnum
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<blockquote data-quote="trcuda" data-source="post: 960853" data-attributes="member: 7720"><p>First, let me say that I have 10+ years experience with the Encore and another 10 or so with its smaller sibling the Contender so I have learned a little about how to make them shoot over the years. </p><p></p><p>!. You must have the forend free floated other than the attaching screws to get consistent results. Good news is that there is an easy way to do this. Run down to your local hardware store and pick up several small rubber washers. Usually they are in the plumbing section. The center hole is slightly larger than the 8-40 attaching screw and the OD is about 1/2" One of these between the bbl and forend at each screw should be enough. (a dab of grease on each washer will hold it in place while you attach the forend)</p><p></p><p>2. Ditch the lead sled. It does nothing to promote consistent shooting and teaches you bad habits! Use a sandbag for the rear and even a cheap front rest is better than the sled. Place the front rest as far back on the forend as you can without hitting the action. Make sure you get it in the same place for every shot. The Encore, especially in carbine form, is extremely sensitive to bag placement. </p><p></p><p>3. The Encore tends to have excessive headspace in the magnum calibers.. TC chambered them to the SAMMI max depth and I have yet to see a mag case that had a belt that met the minimum SAMMI dimension. Best results will be achieved by handloading, setting your dies so that your cases headspace off the shoulder instead of the belt. You will also find a large variation of belt dimensions from case to case even on cases from the same manufacturer! Keeping you loads somewhat below max with the magnums in the Encore will also help with accuracy.</p></blockquote><p></p>
[QUOTE="trcuda, post: 960853, member: 7720"] First, let me say that I have 10+ years experience with the Encore and another 10 or so with its smaller sibling the Contender so I have learned a little about how to make them shoot over the years. !. You must have the forend free floated other than the attaching screws to get consistent results. Good news is that there is an easy way to do this. Run down to your local hardware store and pick up several small rubber washers. Usually they are in the plumbing section. The center hole is slightly larger than the 8-40 attaching screw and the OD is about 1/2" One of these between the bbl and forend at each screw should be enough. (a dab of grease on each washer will hold it in place while you attach the forend) 2. Ditch the lead sled. It does nothing to promote consistent shooting and teaches you bad habits! Use a sandbag for the rear and even a cheap front rest is better than the sled. Place the front rest as far back on the forend as you can without hitting the action. Make sure you get it in the same place for every shot. The Encore, especially in carbine form, is extremely sensitive to bag placement. 3. The Encore tends to have excessive headspace in the magnum calibers.. TC chambered them to the SAMMI max depth and I have yet to see a mag case that had a belt that met the minimum SAMMI dimension. Best results will be achieved by handloading, setting your dies so that your cases headspace off the shoulder instead of the belt. You will also find a large variation of belt dimensions from case to case even on cases from the same manufacturer! Keeping you loads somewhat below max with the magnums in the Encore will also help with accuracy. [/QUOTE]
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Problems Grouping with my Thompson Center 300 Winchester Magnum
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