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Rifles, Reloading, Optics, Equipment
Reloading
Fireforming 7 STW brass from 300 H&H
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<blockquote data-quote="J E Custom" data-source="post: 1026873" data-attributes="member: 2736"><p>When I built my 7 STW there was no commercial ammo available and we had to make it from 8 mm REM brass. A Square later came out with ammo that made it a little easier. There loaded ammo was 3500 ft/sec with 140 grain bullets. (Later they backed of to 3450 ft/sec).</p><p></p><p>When I could get it I used the 8mm Rem brass to make my 7 STW cases. A Square loaded some in there brass that was very tough and I still have some of it also.</p><p></p><p>Ether case has held up very good and the 8mm Rem just needs the neck to be sized.</p><p></p><p>I never loaded any Squibb loads to fire form because of the potential problems and just loaded down 3 or 4 grains to get good sharp shoulders.</p><p></p><p>I also loaded some loads very hard (140 grain @ 3790 in a 31" barrel) and brass life suffered. after 3700 ft/sec the accuracy went away, so I backed of to 3600 ft/sec and brass life was ok (4 to 5 shots) before the primer pockets felt a little loose.</p><p></p><p>I also found that the 375 H&H brass worked very well and I was able to turn the necks just enough to true them without thinning the necks.</p><p></p><p>The STW brass can be made from many other cartridges, These are just the ones that I used.</p><p></p><p>I Hope this gives all the 7 STW shooters other sources of brass.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1026873, member: 2736"] When I built my 7 STW there was no commercial ammo available and we had to make it from 8 mm REM brass. A Square later came out with ammo that made it a little easier. There loaded ammo was 3500 ft/sec with 140 grain bullets. (Later they backed of to 3450 ft/sec). When I could get it I used the 8mm Rem brass to make my 7 STW cases. A Square loaded some in there brass that was very tough and I still have some of it also. Ether case has held up very good and the 8mm Rem just needs the neck to be sized. I never loaded any Squibb loads to fire form because of the potential problems and just loaded down 3 or 4 grains to get good sharp shoulders. I also loaded some loads very hard (140 grain @ 3790 in a 31" barrel) and brass life suffered. after 3700 ft/sec the accuracy went away, so I backed of to 3600 ft/sec and brass life was ok (4 to 5 shots) before the primer pockets felt a little loose. I also found that the 375 H&H brass worked very well and I was able to turn the necks just enough to true them without thinning the necks. The STW brass can be made from many other cartridges, These are just the ones that I used. I Hope this gives all the 7 STW shooters other sources of brass. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Fireforming 7 STW brass from 300 H&H
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