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<blockquote data-quote="SDMF" data-source="post: 325209" data-attributes="member: 412"><p>There are folks who specialize in turning SxS shotguns into SxS rifles. Single-shot break action shotguns have essentially the same lockup. </p><p></p><p>You can buy a break-action single-shot H&R Topper/NEF from 223Rem up through 45-70. </p><p></p><p>The full choke doesn't start @ the chamber.</p><p></p><p>Chamber pressure isn't 55K PSI when you've got a 3" chamber and a ~1.75" COAL with a chamber diameter of .470 vs. .452 projectile diameter.</p><p></p><p>Someone could calculate this but I suspect the long tapering choke squeezing and elongating the projectile produces less pressure than obturation @ the chamber and a very tight land-groove-projectile seal.</p><p></p><p>The "testers" are either feigning surprise or they're slack-jawed booger-eating morons from the get-go.</p></blockquote><p></p>
[QUOTE="SDMF, post: 325209, member: 412"] There are folks who specialize in turning SxS shotguns into SxS rifles. Single-shot break action shotguns have essentially the same lockup. You can buy a break-action single-shot H&R Topper/NEF from 223Rem up through 45-70. The full choke doesn't start @ the chamber. Chamber pressure isn't 55K PSI when you've got a 3" chamber and a ~1.75" COAL with a chamber diameter of .470 vs. .452 projectile diameter. Someone could calculate this but I suspect the long tapering choke squeezing and elongating the projectile produces less pressure than obturation @ the chamber and a very tight land-groove-projectile seal. The "testers" are either feigning surprise or they're slack-jawed booger-eating morons from the get-go. [/QUOTE]
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