Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Berger Bullets


300 wby bullet seating depth question

LinkBack Thread Tools Display Modes
Unread 04-05-2012, 01:24 AM
Junior Member
Join Date: Dec 2008
Posts: 14
300 wby bullet seating depth question

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.

Last edited by axe3761; 04-05-2012 at 02:06 AM.
Reply With Quote

Unread 04-05-2012, 01:35 AM
Gold Member
Join Date: Jun 2009
Location: Afognak Island, Alaska
Posts: 601
Re: 300 wby bullet seating depth question

A general rule is to seat your bullet at least a caliber's depth into your neck. In other words seat your .308 caliber bullet .308" deep as a minimum. On my Weatherbys I start there and work back.
I know about the freebore thing and Weatherbys. With my 300Wby, my 150s plop out of the modified case and lays in the leade before it touches the lands.
Long Range Sickle
Reply With Quote
Unread 04-05-2012, 09:14 AM
Platinum Member
Join Date: Oct 2007
Location: Mountians of SW NC, near Asheville
Posts: 1,595
Re: 300 wby bullet seating depth question

A lot of cases don't have a neck one caliber long.

No matter what any of us may tell you, any experienced reloader knows you're going to have to work with your own rifle to learn what bullet jump does best and using a left or right handed action won't change a thing.
Reply With Quote


Thread Tools
Display Modes

Similar Threads for: 300 wby bullet seating depth question
Thread Thread Starter Forum Replies Last Post
bullet seating depth jimbothepunk Reloading 12 08-19-2010 10:17 PM
bullet seating depth for 7mm rem mag DIGGA Reloading 10 06-18-2009 06:23 AM
bullet seating depth for 7mm rem mag DIGGA Rifles, Bullets, Barrels & Ballistics 0 06-09-2009 04:23 AM
300 RUM Bullet Seating Depth? MontanaRifleman Reloading 8 02-27-2009 04:09 PM
bullet seating depth question Possum284 Reloading 2 08-12-2008 08:35 PM

All times are GMT -5. The time now is 10:17 PM.

All content ©2010-2015 Long Range Hunting, LLC