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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
You ain't ever seen a 303 British like this before...
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<blockquote data-quote="RT2506" data-source="post: 1132466" data-attributes="member: 10178"><p>That really looks nice. I have collected old military rifles for a long time and shoot them all. Here are some things I have found for the 303 British. Do not full length size your cases. Shoot some ammo in your rifle then only do with I call part size the case. Set your FL die so it just sizes the neck without doing anything to the shoulder and see it is will chamber. If it will not just screw the die down enough to slightly bump the shoulder to allow it to chamber. These rifles have VERY sloppy chambers and the cases really grow. If you full length your cases they will not last much over 2 firings. Next thing to do is slug your bore to see what diameter bullet you actually will need. These rifles vary as to bore size. I have seen them that need .308 up to .312. Take a egg shape lead fishing weight or muzzle loader ball at least .313 in diameter but not over .315 and drop it into the chamber with the bolt removed. Take wooden dowel rods that will just fit inside the bore and drive the lead slug all the way through the bore. Measure the slug between the high spots which are what went into the grooves. This will let you know what your grove diameter is and use a bullet equal or 1 thousand larger. In my experience they like the 174 gr and heaver bullets with powders in the IMR 4064 to IMR 4350 burn rate. Have fun.</p></blockquote><p></p>
[QUOTE="RT2506, post: 1132466, member: 10178"] That really looks nice. I have collected old military rifles for a long time and shoot them all. Here are some things I have found for the 303 British. Do not full length size your cases. Shoot some ammo in your rifle then only do with I call part size the case. Set your FL die so it just sizes the neck without doing anything to the shoulder and see it is will chamber. If it will not just screw the die down enough to slightly bump the shoulder to allow it to chamber. These rifles have VERY sloppy chambers and the cases really grow. If you full length your cases they will not last much over 2 firings. Next thing to do is slug your bore to see what diameter bullet you actually will need. These rifles vary as to bore size. I have seen them that need .308 up to .312. Take a egg shape lead fishing weight or muzzle loader ball at least .313 in diameter but not over .315 and drop it into the chamber with the bolt removed. Take wooden dowel rods that will just fit inside the bore and drive the lead slug all the way through the bore. Measure the slug between the high spots which are what went into the grooves. This will let you know what your grove diameter is and use a bullet equal or 1 thousand larger. In my experience they like the 174 gr and heaver bullets with powders in the IMR 4064 to IMR 4350 burn rate. Have fun. [/QUOTE]
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You ain't ever seen a 303 British like this before...
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