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Fitting reloaded ammo into SAKO 243

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/26/2011 at 14:16
shooter4 View Drop Down
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Good day

Im reloading for my 243 Sako Forester. I bought a brand new Hornady new dimension die set for my RCBS press. Im not sure if Im sizing the brass correctly (its Norma brass, shot once before, thus fire formed).

The problem is when Im closing the bolt its rather stiff. Im sorry I cant explain accurate exacly how much force it takes to close the bolt, its not super stiff but still a bit stiffer to close than my other rifles (other calibers though). Its definetely not the bullet that is sticking too much out. Im sure of that. Its the size/shape of the brass v.s. the rifle itself.

I dont have the same problem when reloading for my 308 and 6.5x55 with RCBS dies.

Im wondering if this 243 Hornady "other dimension" die does not suit my 243 Sako?  And also, if this can cause over pressure if I shoot it like that? Any other ideas gentlemen?

Thanks
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/26/2011 at 14:40
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sounds to me like you need to turn the screw in a little more to bump the shoulder back.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/26/2011 at 15:26
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Some chambers are a bit smaller than others and if yours in on the small end of the spec it could feel snug. I had a pair of 243's and shells that fit my ruger rsi perfectly were a bit snug in the vanguard I had. Pyro is right just screw in the die about 1/4 turn at a time until the fit is right and then lock the ring in place. If you have the die touching the shell holder already then you are sort of out of options. If it is just snug you s/b fine as a bolt rifle really has quite a bit of camming action and will usually close unless we are talking gross oversize issues. I don't think you will have pressure problems just start your loads at recommended starting loads and work your way up to max for your rifle. One other thing is be sure your cases are the proper length. if thy have stretched too much they can be crowding the bullet in the throat and that can cause both the feel you describe and pressures to climb.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/26/2011 at 16:15
shooter4 View Drop Down
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Thanks guys
The shell holder is already touching the die. So I guess Im stuck there.
 
How can a case stretch out too much (is it the die)?  I noticed the case got approx 1mm longer after running it thru the die.  Is that possibly the problem?
 
 


Edited by shooter4 - February/26/2011 at 16:41
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/26/2011 at 16:46
powderburn View Drop Down
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Case stretching is usually caused by the extreme pressures when firing. Note that the 243 is probably operating close to 60,000psi and that causes the brass to flow hence requiring case trimming every few shots or so. The neck can also be stretching a bit as the expander ball passes thru it and in some cases if a crimp is used buy the factory as the crimp unfolds on the initial firing it can lengthen the case a bit. I am assuming you are chamfering your cases on the first reloading if not get a manual and read the section on prepping the cases and trimming. This could be causing your snug fit and can lead to pressure issues as the case is crowding the bullet in the throat of the chamber. If you need to trim it doesn't need to be an expensive process. I have had the trimmers etc in the bpast but now I just use the little lee trimm guides and a power drill and it works fine. Each caliber is about $5-6.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/26/2011 at 20:00
Johnny View Drop Down
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Is the shell holder tight against the bottom of the die? It may feel that way with out case in place, but with the case and the pressure taking all the "slack" out of the linkage, you could be a few thousands short of all the way into the die.  Screw the die in 1/4 turn more. With case in place try to size it and you can feel when the ram is truly bottomed out against the die. Then see if the case will fit your chamber. You can try this case before you put the powder and bullet in place. If the case is still snug when closing, make sure the case isn't over length, and it shouldn't be with one reloading. If it still tight call Hornady and see what they have to say. You maybe able to send them a fired case with the dies and they can get the die right. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/26/2011 at 20:59
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If the rounds shoot fine and it's not really difficult to close the bolt I would just keep doing what your doing.  I had the same problem with one of my resizing dies.  Wouldn't push the shoulder back quite far enough even though the die was tight against the shell holder.  They shot fine though.  
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/27/2011 at 05:25
308 Sav View Drop Down
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This is assuming a new factory load fits in your rifle fine.

First check your overall length of your brass. If it does not need to be trimmed then you have a bad die. Return it for another one.
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