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Hunting
Long Range Hunting & Shooting
7mm build
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<blockquote data-quote="coyotezapper" data-source="post: 1516042" data-attributes="member: 20438"><p>The neck length from what I can tell is .380" which is just under .100" longer than caliber which has been stated as the standard. How much more powder capacity do you think you will get with .100"?? I shoot a couple of different Ackleys and these only get 4-7% more capacity than the parent case and these not only change the shoulder but reduce taper in the case also, much more than just moving the shoulder up, the case is blown out also. The 7LRM from what I can tell has a 90 grain case capacity so I would guess that just moving the shoulder forward .100" would add maybe 2-3% and that's a big maybe so that equates to 2.7 grains. Not really significant.</p></blockquote><p></p>
[QUOTE="coyotezapper, post: 1516042, member: 20438"] The neck length from what I can tell is .380" which is just under .100" longer than caliber which has been stated as the standard. How much more powder capacity do you think you will get with .100"?? I shoot a couple of different Ackleys and these only get 4-7% more capacity than the parent case and these not only change the shoulder but reduce taper in the case also, much more than just moving the shoulder up, the case is blown out also. The 7LRM from what I can tell has a 90 grain case capacity so I would guess that just moving the shoulder forward .100" would add maybe 2-3% and that's a big maybe so that equates to 2.7 grains. Not really significant. [/QUOTE]
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