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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
NEW 7 SHERMAN SHORT TACTICAL (SST)
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<blockquote data-quote="SteelBanger" data-source="post: 2127543" data-attributes="member: 112192"><p>Good timing, I was just coming out here with my own update (below). Unfortunately I've never been able to shoot far enough to really have to dial in the BC's. I have gone to strictly using G7's but have only ever played with Hornady's 4DOF, I use the BallisticsARC app for my dope data and have only had to tweak the G7 figure once but that was on the 73gr ELD-M bullets in an AR ... started getting a little off around 500y. I can't remember the guys name who does the custom curves but the G7 he came up with for that 73gr bullet was pretty spot on. Sorry I'm not much help there!</p><p></p><p>A small update on my 7SST, I still suffer from light primer strikes but think I finally have it narrowed down to a bad trigger, and not the headspace ordeal i detailed above. I spent a good amount of time last night measuring and remeasuring things and the headspace just doesn't make much sense. The only fired case I have (that came from my smith using a different trigger) measures 1.445 to the shoulder and my sized cases are mostly 1.442, so only a 3 thou bump which shouldn't be that big of a deal. A couple sized cases were even 1.443 and at a 2 thou bump those should light up every time without fail. I then sized a case to 1.444 (1 thou bump) primed it and tried to fire it ... barely made a mark on the primer. I talked to my smith for a while tonight and he had me re-prime the fired case (not sized) and try to fire it but it wouldn't go off. A bad trigger is about the only thing that makes sense at this point so he is mailing me a couple different triggers to try out, hopefully will have those this week sometime.</p><p></p><p>I also have 180 hybrids and 180 VLD-H bullets to try ... once I can finally get this thing to shoot.</p></blockquote><p></p>
[QUOTE="SteelBanger, post: 2127543, member: 112192"] Good timing, I was just coming out here with my own update (below). Unfortunately I’ve never been able to shoot far enough to really have to dial in the BC’s. I have gone to strictly using G7’s but have only ever played with Hornady’s 4DOF, I use the BallisticsARC app for my dope data and have only had to tweak the G7 figure once but that was on the 73gr ELD-M bullets in an AR ... started getting a little off around 500y. I can’t remember the guys name who does the custom curves but the G7 he came up with for that 73gr bullet was pretty spot on. Sorry I’m not much help there! A small update on my 7SST, I still suffer from light primer strikes but think I finally have it narrowed down to a bad trigger, and not the headspace ordeal i detailed above. I spent a good amount of time last night measuring and remeasuring things and the headspace just doesn’t make much sense. The only fired case I have (that came from my smith using a different trigger) measures 1.445 to the shoulder and my sized cases are mostly 1.442, so only a 3 thou bump which shouldn’t be that big of a deal. A couple sized cases were even 1.443 and at a 2 thou bump those should light up every time without fail. I then sized a case to 1.444 (1 thou bump) primed it and tried to fire it ... barely made a mark on the primer. I talked to my smith for a while tonight and he had me re-prime the fired case (not sized) and try to fire it but it wouldn’t go off. A bad trigger is about the only thing that makes sense at this point so he is mailing me a couple different triggers to try out, hopefully will have those this week sometime. I also have 180 hybrids and 180 VLD-H bullets to try ... once I can finally get this thing to shoot. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
NEW 7 SHERMAN SHORT TACTICAL (SST)
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