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Savage 338 lapua bullet setback

 
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  #1  
Old 10-07-2012, 08:41 PM
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Savage 338 lapua bullet setback

I am having a bullet setback issue with my savage 111LRH in 338LM. I am using RCBS FL dies with lapua brass and berger 300gr bullet using 89.0gr retumbo. COL is 3.750 (just fits the magazine). The problem is with both fired and unfired lapua brass. I have tried using lots of roll crimp using the RCBS dies and no crimp at all. Tried pushing them on a table and the bullet wont budge but the rounds in the magazine are experiencing a lot of bullet setback. I cannot move the bullets deeper into the cases before firing but they can be moved in and out after being in the magazine for a couple of rounds. I know this sounds confusing but I am just trying to explain the best I can. Is there another die that works better or am I missing something. Not new to reloading but this is the first time I have had this problem. Thanks for any help.
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Old 10-07-2012, 08:59 PM
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Re: Savage 338 lapua bullet setback

There was some stuff I purchased a while back to water proof handloaded rounds. It came in a glass bottle that looked like nail polish this might help I don't know. I think Roy was one of the names on the bottle. I would call RCBS; the sizing button may be undersized. Good luck.
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Old 10-07-2012, 10:09 PM
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Re: Savage 338 lapua bullet setback

Have you measured the outside neck diameter, it should be .365" using Lapua brass. Also, what s the distance to the lands. Mine, and my buddies rifles are 3.74-3.75". You might try seating your bullets a little deeper. Most of the Savage 338 LRH and FCP shooters I know including mine are seating the 300gr. Bergers 3.70-3.720" COL. Seating the bullets further from the lands doesn't seem to effect the accuracy with the Berger 300's, many times improving it. Maybe the bullets are too tight in the magazine making contact. I had this problem with my 375 H&H. You could also be deforming the bullet tips. just some thoughts.
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Old 10-08-2012, 04:51 PM
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Re: Savage 338 lapua bullet setback

I just finished loading some 338 with the berger 300gr bullets using the RCBS dies. What I found is varying COL's from round to round. I don't know if it's a slight variance in the profile of the bullet or not, but at the angle the taper on the bullet is, only a thousandth difference in diameter where the die contacts the bullet will magnify out in COL . You might want to check each round for that.
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  #5  
Old 10-09-2012, 07:29 AM
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Re: Savage 338 lapua bullet setback

Quote:
Originally Posted by countryrebel View Post
I am having a bullet setback issue with my savage 111LRH in 338LM. I am using RCBS FL dies with lapua brass and berger 300gr bullet using 89.0gr retumbo. COL is 3.750 (just fits the magazine). The problem is with both fired and unfired lapua brass. I have tried using lots of roll crimp using the RCBS dies and no crimp at all. Tried pushing them on a table and the bullet wont budge but the rounds in the magazine are experiencing a lot of bullet setback. I cannot move the bullets deeper into the cases before firing but they can be moved in and out after being in the magazine for a couple of rounds. I know this sounds confusing but I am just trying to explain the best I can. Is there another die that works better or am I missing something. Not new to reloading but this is the first time I have had this problem. Thanks for any help.
It's not a good idea to use a crimp with a non cannelure bullet. It can deform your bullet and perhaps effect it's performance and bc.
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  #6  
Old 10-09-2012, 08:21 PM
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Re: Savage 338 lapua bullet setback

OK, measured the outside neck diameter on the lapua brass and it was .365". Set the bullets to 3.70 COL. Loaded 4 rounds in the mag and fired the top 2. Round 3 was setback to 3.615" and round 4 was setback to 3.640". Bullet tips are flattened from recoil in the magazine and there are no signs of overpressure on the fired rounds. This was using virgin brass.The berger 300gr bullets measure .338. Do you guys think the 89.0gr of retumbo is maybe too hot? I have some 285gr Hornadys that I will try and see if the problem persists. I am shooting off a bipod but I dont think that should matter. Any more ideas?
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  #7  
Old 10-09-2012, 11:45 PM
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Re: Savage 338 lapua bullet setback

I am interested to see what suggestions come out of this thread, i am fighting set-back in a Savage .338 WM (don't think it has to do with the gun, just coincidence) as well as bullet tip deformation, it actually leaves a notch from where the front of the mag is overlapped and spot-welded. I am helping a friend setup this rifle to be a good all around gun to 500 yards, certainly not 1000+ performance needed, but past 300, you have to have things in good order for a first round hit everytime! We are loading 200gr Speer's to just over 3000fps, and getting tip deformation. I have been making sure the necks are dry and clean, no lube left, and that we are sizing the neck fully and have the setback fixed... for now. We have plenty of room in the mag so we glued a strip of rubber to the box to hopefully fix the deformation part, but don't know till we can shoot it again.
I cured setback with Bergers in my 7mm by turning the sizer in a bit more, and polishing my expander a bit, while removing lube from the neck, which has eliminated the problem for me. Good luck, hope you can figure it out!
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