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Rifles, Reloading, Optics, Equipment
Reloading
300 wby bullet seating depth question
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<blockquote data-quote="axe3761" data-source="post: 636853" data-attributes="member: 14338"><p>hi all. i am working up a load for my 300 wby. it has a custom heavy barrel and is 30 inches long. left hand action mark v. my question is i am measuring max coal from bullet touching lands to base of cartridge. i have come up with a cartridge length of 3.850'' now if i seat the bullet 20 thou deeper to start i am left with a cartridge that is 3.830'' long. factory ammo is 3.560'' max coal. i made up a dummy round to measure with and when i just start seating the bullet into the case i get a measurement of 4.020'' i am left with .190'' of the bullet base in the case mouth. is this going to be enough bullet in the case to perform safely or should i seat it deeper and start out with a bigger jump. i read the vld seating thread and it answered a few questions but am a little sketchy on this one. i am using 220 gr sierra matchking bthp's cause i have lots of em. lol. i have not a clue if this barrel has the weatherby freebore or not but am thinking it does because the coal is so long even with these long bullets. not worried about fitting a magazine, only need one shot. thanks for any help.</p><p></p><p>if i give it one bullet diameter i already have a .130 thou jump to start give or take.</p></blockquote><p></p>
[QUOTE="axe3761, post: 636853, member: 14338"] hi all. i am working up a load for my 300 wby. it has a custom heavy barrel and is 30 inches long. left hand action mark v. my question is i am measuring max coal from bullet touching lands to base of cartridge. i have come up with a cartridge length of 3.850'' now if i seat the bullet 20 thou deeper to start i am left with a cartridge that is 3.830'' long. factory ammo is 3.560'' max coal. i made up a dummy round to measure with and when i just start seating the bullet into the case i get a measurement of 4.020'' i am left with .190'' of the bullet base in the case mouth. is this going to be enough bullet in the case to perform safely or should i seat it deeper and start out with a bigger jump. i read the vld seating thread and it answered a few questions but am a little sketchy on this one. i am using 220 gr sierra matchking bthp's cause i have lots of em. lol. i have not a clue if this barrel has the weatherby freebore or not but am thinking it does because the coal is so long even with these long bullets. not worried about fitting a magazine, only need one shot. thanks for any help. if i give it one bullet diameter i already have a .130 thou jump to start give or take. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 wby bullet seating depth question
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