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Rifles, Reloading, Optics, Equipment
Reloading
Neck Tension Effect on Accuracy
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<blockquote data-quote="bigedp51" data-source="post: 1252894" data-attributes="member: 28965"><p>Your comparing a redding full length die with a Forster bushing bump neck sizing die. Meaning two very different sizing methods.</p><p></p><p>At the Whidden custom die website they tell you that non-bushing full length dies produce the most concentric ammunition.</p><p></p><p>At Whidden they also sell expander ball kits with five expanders decreasing from bullet diameter to .004 smaller.</p><p></p><p>A runout gauge and a neck thickness gauge may help in solving your problem.</p><p></p><p>If a bushing die reduces the neck diameter .005 or more it can induce neck runout and it is recommended to reduce the the neck in two steps.</p><p></p><p>I prefer the Forster full length benchrest dies with the high mounted floating expander. The neck of the case is still held by the die when the expander enters the case neck. Meaning the expander can't pull the necks off center and greatly reduced neck runout.</p><p></p><p>On the flip side of this my Forster bushing bump neck sizing die produces more neck runout than any other die I own. Many say this is because the die does not fully support the case body like a full length die does. And also reducing neck diameter .005 or more with off the shelf factory rifles.</p></blockquote><p></p>
[QUOTE="bigedp51, post: 1252894, member: 28965"] Your comparing a redding full length die with a Forster bushing bump neck sizing die. Meaning two very different sizing methods. At the Whidden custom die website they tell you that non-bushing full length dies produce the most concentric ammunition. At Whidden they also sell expander ball kits with five expanders decreasing from bullet diameter to .004 smaller. A runout gauge and a neck thickness gauge may help in solving your problem. If a bushing die reduces the neck diameter .005 or more it can induce neck runout and it is recommended to reduce the the neck in two steps. I prefer the Forster full length benchrest dies with the high mounted floating expander. The neck of the case is still held by the die when the expander enters the case neck. Meaning the expander can't pull the necks off center and greatly reduced neck runout. On the flip side of this my Forster bushing bump neck sizing die produces more neck runout than any other die I own. Many say this is because the die does not fully support the case body like a full length die does. And also reducing neck diameter .005 or more with off the shelf factory rifles. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Neck Tension Effect on Accuracy
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