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Rifles, Reloading, Optics, Equipment
7mm STW
Short barreled stw
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<blockquote data-quote="Lefty7mmstw" data-source="post: 827546" data-attributes="member: 48043"><p>With a 22" bbl you will notice some loss in speed in a 7stw but you will at least make 7 rem speed and possibly a bit more. I've got a 24" tube on my stw and I'm still able to get 175's to 3100 fps. Mudrunner is correct that the 26" pipe (or longer) is preferred but I'd shoot the barrel dead if the accuracy is there and not worry so much.</p><p>This is the pressure trace from the 150 grain winchester factory load in my sendero 7stw. Notice the slight pressure bump at 1.2 milliseconds. That is a slight tight spot in the bore at about 16". You are already down to 30 Kpsi there and falling rather fast.</p><p><a href="http://www.longrangehunting.com/forums/attachments/f28/19207d1363004549-4000-fps-7mm-stw-w-140-bullet-068.jpg" target="_blank"><img src="http://www.longrangehunting.com/forums/attachments/f28/19207d1363004549t-4000-fps-7mm-stw-w-140-bullet-068.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 827546, member: 48043"] With a 22" bbl you will notice some loss in speed in a 7stw but you will at least make 7 rem speed and possibly a bit more. I've got a 24" tube on my stw and I'm still able to get 175's to 3100 fps. Mudrunner is correct that the 26" pipe (or longer) is preferred but I'd shoot the barrel dead if the accuracy is there and not worry so much. This is the pressure trace from the 150 grain winchester factory load in my sendero 7stw. Notice the slight pressure bump at 1.2 milliseconds. That is a slight tight spot in the bore at about 16". You are already down to 30 Kpsi there and falling rather fast. [URL="http://www.longrangehunting.com/forums/attachments/f28/19207d1363004549-4000-fps-7mm-stw-w-140-bullet-068.jpg"][IMG]http://www.longrangehunting.com/forums/attachments/f28/19207d1363004549t-4000-fps-7mm-stw-w-140-bullet-068.jpg[/IMG][/URL] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
7mm STW
Short barreled stw
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