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Joined: May 2009
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Campfire Ranger
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Campfire Ranger
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OK help me out with this one. WBY 338-378 WBY Mag Accumark. This is the best she will do! This is 104 gr IMR 7828. 225 Accubond at 3250 fps. Every load shot like this (all 225 AB's) Now I have not tested flat based bullets yet but do you think boat tails can make this much of a huge difference? It is bedded from the factory and it has a very sturdy optic set up. Talleys and SWFA SS 3x15. What say you?
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Joined: Sep 2008
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Campfire Tracker
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Campfire Tracker
Joined: Sep 2008
Posts: 5,759 Likes: 1 |
I'm loading for a buddy's 338-378 WBY and his didn't like the 225 A-bond either.
We were loading H1000 (his components) but the groups were similar and disappointing.
We settled on 225gr Barnes TTSX and H1000.
I was thinking a 200gr E-Tip or the 185gr GMX at speed would be perfect for his Elk load but he a believer in a big chunk of a bullet.
Holler if you want to try some leftover components!
"Camping places fix themselves in your mind as if you had spent long periods of your life in them. You will remember a curve of your wagon track in the grass of the plain like the features of a friend." Isak Dinesen
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Joined: Jun 2001
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2001
Posts: 32,221 Likes: 7 |
Probably the bedding isn't right. Not if it is factory original. They (some Wby's at least) are not bedded FLAT, but bent into shooting position by the action screws. Bad way of doing things.
If you don't want to modify the factory stock, you need to buy a torque wrench and torque the action screws
!. to factory specs, then 2. play around with them to find the sweet spots if you need to.
Or: rip out the factory bedding and bed it properly.
I did this to a friend's rifle here in Kotzebue. It went from 5 inch groups (screws tightened snug without torque wrench) to MOA or less, no torque wrench needed.
His had an aluminum bedding plate in it, which needed milling out to flat-bed the receiver and barrel properly into the stock, which we did not have access to, so his barrel climbs upward toward the front of the stock, but the SOB shoots!. Which is what he wanted.
Just another good reason to avoid Weatherbys.
Last edited by las; 08/15/17.
The only true cost of having a dog is its death.
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Joined: May 2009
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Campfire Ranger
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OP
Campfire Ranger
Joined: May 2009
Posts: 17,299 Likes: 5 |
I torqued the screws at 65 inch lbs as directed by weatherby
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Joined: Jan 2012
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Campfire Tracker
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Campfire Tracker
Joined: Jan 2012
Posts: 4,684 Likes: 5 |
65 in/lbs? Wow, that's pretty tight. Remington's "sweet spot" is right around 50 lbs. Might want to play with that. I remember reading a review on a Weatherby rifle at one time, and they couldn't get it to shoot. They loosened up the actions screws and it started shooting 1/2" groups.
Last edited by Biebs; 08/15/17.
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Joined: Jan 2010
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Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
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Maybe the gun just doesn't do well with that bullet. Try another bullet just to see. If you get consistant results with 2 bullets, it is pointing to something other than a load issue.
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Joined: Oct 2003
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Campfire Outfitter
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Campfire Outfitter
Joined: Oct 2003
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I would try flat base bullets. My Varmint Master 22-250 didn't like boat tails and I was told Weatherbys have long throats even with standard cartridge. Some like boat tails buy many don't. YMMV
The Karma bus always has an empty seat when it comes around.- High Brass
There's battle lines being drawn Nobody's right if everybody's wrong
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Joined: Sep 2009
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Sep 2009
Posts: 46,296 Likes: 6 |
I'd seat em as long as the mag allows and bump the pressures another 100 fps with Retumbo.
Trump Won!
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Joined: Aug 2009
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Campfire Oracle
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Campfire Oracle
Joined: Aug 2009
Posts: 96,170 Likes: 5 |
I'd try another bullet and powder combo. Maybe a 225 grain NP and H-1000.
Life Member SCI Life Member DSC Member New Mexico Shooting Sports Association
Take your responsibilities seriously, never yourself-Ken Howell Proper bullet placement + sufficient penetration = quick, clean kill. Finn Aagard
Ken
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Joined: May 2009
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Campfire Ranger
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OP
Campfire Ranger
Joined: May 2009
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I have some 210 partitions and some 225 Sierra pro hunters. I will try them. I did try 3 different powders with the. 225 AccuBonds but they all were a no go.
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Joined: Sep 2010
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Campfire Ranger
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Campfire Ranger
Joined: Sep 2010
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You FLINCH !! Jerry
jwall- *** 3100 guy***
A Flat Trajectory is Never a Handicap
Speed is Trajectory's Friend !!
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Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2001
Posts: 59,184 Likes: 3 |
Most factory 'bedding' is anything but well-done. So many things could be the problem. Is the barrel free-floated? How's the crown? Have you tried less-than-max velocity? If those groups are at 100 yrds, what are they like at 200 ( many BT bullets don't stabilize until further downrange)?
Ex- USN (SS) '66-'69 Pro-Constitution. LET'S GO BRANDON!!!
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Campfire Regular
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Campfire Regular
Joined: Aug 2012
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3 inches plus at 100 is not likely a bullet problem. The 1:10 twist is perfect for just about any 338 bullet, but I assume you know that. I think bedding, scope/mount issue or a very bad barrel. I had a Kimber rifle that shot like that and a new barrel shrunk groups to 1/2" with 225 TTSX.
Last edited by m77; 08/16/17.
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Joined: Aug 2009
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Campfire Oracle
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Campfire Oracle
Joined: Aug 2009
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I have some 210 partitions and some 225 Sierra pro hunters. I will try them. I did try 3 different powders with the. 225 AccuBonds but they all were a no go. IMO,try the 225 gr Sierras next,if those don't shoot well,then it is the rifle or possibly the scope/mounts.
Life Member SCI Life Member DSC Member New Mexico Shooting Sports Association
Take your responsibilities seriously, never yourself-Ken Howell Proper bullet placement + sufficient penetration = quick, clean kill. Finn Aagard
Ken
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Joined: Dec 2008
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Campfire Oracle
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Campfire Oracle
Joined: Dec 2008
Posts: 78,307 Likes: 2 |
I say you have had an astounding string of luck with your Weatherbys. It appears to now be over....
"...the left considers you vermin, and they'll kill you given the chance..." Bristoe
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Joined: Sep 2009
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Sep 2009
Posts: 46,296 Likes: 6 |
I won a Weatherby in a raffle one time, it was chambered in 270 Winchester, it was supposed to be the Grand Prize!
Trump Won!
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Joined: May 2009
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Campfire Ranger
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OP
Campfire Ranger
Joined: May 2009
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I have some 210 partitions and some 225 Sierra pro hunters. I will try them. I did try 3 different powders with the. 225 AccuBonds but they all were a no go. IMO,try the 225 gr Sierras next,if those don't shoot well,then it is the rifle or possibly the scope/mounts. That is what I am thinking. The scope is a proven 3x15 Super Sniper SWFA in Talley rings. I might try the 225 AB's again at maybe 40-inch lbs of torque just to see if there is a difference. Hey, worst case scenario she goes back to WBY. They are guaranteed to shoot well right?
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Joined: Aug 2009
Posts: 96,170 Likes: 5
Campfire Oracle
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Campfire Oracle
Joined: Aug 2009
Posts: 96,170 Likes: 5 |
The scope is proven,then my guess is the bedding. I would try the Sierras first just to see what happens and use the 40 inch lbs of torque. If there is an improvement in accuracy,then try the Accubonds.
If that does not work,send back to Weatherby.
Life Member SCI Life Member DSC Member New Mexico Shooting Sports Association
Take your responsibilities seriously, never yourself-Ken Howell Proper bullet placement + sufficient penetration = quick, clean kill. Finn Aagard
Ken
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Joined: Jan 2005
Posts: 12,486
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2005
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I have some 210 partitions and some 225 Sierra pro hunters. I will try them. I did try 3 different powders with the. 225 AccuBonds but they all were a no go. IMO,try the 225 gr Sierras next,if those don't shoot well,then it is the rifle or possibly the scope/mounts. That is what I am thinking. The scope is a proven 3x15 Super Sniper SWFA in Talley rings. I might try the 225 AB's again at maybe 40-inch lbs of torque just to see if there is a difference. Hey, worst case scenario she goes back to WBY. They are guaranteed to shoot well right? They are guaranteed to shoot well using Weatherby factory ammo. Just for the hell of it, buy a box of Weatherby factory ammo and see what's what. If it still sucks you can always say that you tried the factory stuff in addition to handloads. Beware, look at the price for factory ammo sitting down........You can always reuse the brass. http://www.weatherby.com/338-378-wby-mag.htmlIf anything, duplicate COAL. I would try seating deeper and work your way out. Don't get too hung up on barely fitting the magazine.
Faith and love of others knows no mileage nor bounds. That's simply the way it is. dogzapper
After the game is over, the king and the pawn go into the same box. Italian Proverb
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Campfire Ranger
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Campfire Ranger
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They were not mag length. More like 3.65"
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