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Post by jims on Feb 12, 2016 12:32:00 GMT -5
I did not want to hijack the Wads posting but this goes along with that to some extent but will be separate. I have a "stock" Savage breech plug with a bushing and the primer pocket was slightly enlarged for the Win 209 primers. I have a PacNor .45 barrel I am going to spin on the Savage small shank action.
What would be the proper procedure with a stock Savage breechplug to get the "headspace" correct? I would like to avoid machining of any type on the breech plug if possible. In effect just information for most that want to take there standard breechplug and get the fit correct for their aftermarket barrel. All the guys on the Wads posting can jump in here. Thanks
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Post by linebaugh on Feb 12, 2016 12:58:37 GMT -5
My first question and thoughts are why do you not want to modify the plug? If you do not modify the plug you nay not be able to get from point A:Z. At a minimum you will need to add the bushings to get a light crush fit on your primer of choice.
Does your plug have a shelf in it? On my old savage plugs there was a false shelf (very light) and they were easy to get to seal for me. If my memory is correct I had to machine about .100 of an inch off the plug nose with winchester primers. I would then screw the barrel in to touch the bolt face and back off 1/4 turn.
My numbers could be wrong but that false shouldered plug was so easy to work with. I know it's in vogue now to have an actual shelf and crush fit the nose but I much prefered that light false shoulder and crush fitting the sides of the primer nose.
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Post by Deleted on Feb 12, 2016 16:47:15 GMT -5
A lot of things are at play here. If you want to be able to shoot high pressure loads or low pressure loads, I would insert a shelf in the plug. My method is to remove the bolt and BP. Put a primer of your choice in the bolt nose and insert it into the BP. It should not go in really easily by hand but you may need to polish/lightly dremel the BP in order to get the primer to insert fully until the bolt face touches the BP. When this is achieved, slide the bolt nose of the primer, leaving the primer in the BP. Measure the overall BP length with primer. Remove the primer and measure the BP length again. Subtract the difference of the two measurements from the length of the primer alone and that will be the NEW depth of the BP primer pocket. Measure the depth of the current primer pocket and subtract from it the NEW primer pocket depth calculated earlier and add .005". This will give you the thickness of the needed shim to be pressed into the BP. Once this shim is pressed in, confirm the depth is equal to the calculated NEW primer pocket depth minus .005". If it is within .005 you are good. Now, put the BP in the barrel, the bolt in the gun, a primer in the BP and screw the barrel in until it stops. At this point previous headspace experience is helpful. Adjust headspace until bolt resistance is met when camming the bolt into battery position. This will get maximum primer penetration into the BP and will lock the primer in place between the BP shelf and the bolt face. If the primer pocket is still a little tight, you can polish it a little so that it will insert and extract from the BP easier. Hope this helps.
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Post by jims on Feb 12, 2016 20:05:35 GMT -5
Actually the way I worded the question was for the average shooter that did not have access to a machinist. A person that just wanted to screw a new barrel on the action but get a good sealing combination. They may not have the dimensions of the step required, unsure of what to do or how to proceed.
I have put on multiple ML barrels but it certainly is different than a centerfire with a go and no go gauge. Some are a bit intimidated by the whole process and are hopeful they do not have to spend anymore than a new barrel and barrel wrench.
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Post by Deleted on Feb 13, 2016 9:21:17 GMT -5
I will mail you a shim , that when installed, will make your primer pocket around .180" deep. That is what Slufoot uses and has worked well in a lot of guns. Just press it in with hammer and punch. Then you can install the plug in the barrel and set headspace. PM me your mailing info and I will get it to you.
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Post by jims on Feb 13, 2016 9:42:32 GMT -5
Thanks scat but I have various shims in three different thicknesses so I am good in that aspect. Good thoughts presented here by all.
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Post by 1murphy on Feb 13, 2016 11:29:17 GMT -5
Anybody have a link or two where these shims can be purchased? I was thinking McMaster Carr but I was more interested in getting the correct ones.
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