I have a 338 win mag as my back up gun for hunting this winter. We have some 4350 and 4831 powder. I was running Accubonds in the 225 grainers. Played with some different loads but never really hit a home run. It has a kreiger barrel and feel finding a load should not be rocket science. It still has a wood stock but it’s bedded and should be ok. Everything we did was moa plus.
That barrel should give me moa pretty easy.
Anywho, what you got guys!
PB
Try some H4831SC. It may not give you as much speed, but it’s like magic in rifles that won’t shoot anything else.
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The AccuBonds should shoot, always have from my guns.
Try different powder as suggested.
Rl 22 or 25 worth a shot.
I have a little RL22. I’ll shit if their damned powder is the answer.
No kidding. I hate that stuff but my .280AI loves it.
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Sierra game kings. Good bullets…
Accubonds is what I feed my 300WM and its lights out 24/7. Love that gun, love that round. It’s just puzzling us with 338WM.
If you haven’t already done so, you might try this PB-
My experience has been- sometimes the barrel wants forend pressure, sometimes it wants to float, particularly with a wood stock.
My usual practice is to hog out and bed the action to just forward of the lug- maybe an inch into the barrel taper. I’ll float the barrel all the way out from there, so I can slide a folded dollar bill from the bedding to the forend tip.
If a “known quantity” load doesn’t shoot with this setup I fold a business card and slide it between the barrel and forend- so it exerts upward pressure.
If that works I’ll pull the barreled action, make a “dam” out of clay, slather release agent (Johnson’s Paste Wax) on end of barrel, fill the dam with Acraglass and snug down the action- NOT all the way.
After 24 hrs. pull it apart, clean out the clay, torque the action down and shoot it.
How are you adjusting your resizing dies? Just enough neck resize down to the shoulder junction? Or are you trying to squeeze all the way down to the belt?
I’m going to pay particular attention to the pressure I put on the gun next time out to shoot. I may later try some of these tactics. Or I might eat the bullet and buy a stock or chassis. I don’t want to buy a stock if I can’t get it to group first though.
Another option might be try some 250 grain bullets. I never tried those.
If I go into rebuild mode, I’m going to put a suppressor adapter on it and have a hunting gun with can. I have a 338LM can from Sig that I run on my 300 currently.
A lot of options, AFTER I confirm she is a shooter.
PB
PB,
Could you post a pic of your load dev targets?
Are you jumping the bullet or into the lands?
Josh
The load is fits snug into the chamber. My gunsmith makes sure we are not jumping as it’s a kreiger custom built barrel. Mark loads accordingly.
I’ll post pics of target next time out.
PB