Posted: 11/17/2008 3:52:08 PM EDT
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For years i rejected the idea of the need for small base dies.. A standard die will resize your cases to SAAMI specs so why a small base die?
I learned why. I have a couple thousand once fired 30-06 federal brass that I bought from a garand shooter. It has worked just fine in my M1's without a hiccup. So I am putting together some 30-06 rounds for deer season in my M700 and find that the case will not chamber easily making the bolt stiff and almost inoperable. I posted a thread aboutt his last week, BTW. Here's what I learned, or rather finally accepted. Small base dies are a must in some cases. As an example, the brass I have has been fired in rifles that have slightly larger chamber dimensions than a standard hunting bolt gun. So the brass being slightly "springy" stretched to the slightly larger chamber dimensions of the M1 and relaxed to a point slightly smaller but still larger than SAAMI spec. BUT, when sized thru a standard die it is only pushed back to standard dimensions and when withdrawn from the die it "springs" back to a slightly larger dimension due to it being fire formed to that larger chamber. So what a small base die will do is squeeze it just a little further so when the brass "springs" back it is coming back to spec rather than the above.. So to all the guys I advised that a small based die is not needed, I withdraw that statment and give you the above! Now the bigger question. Is a small based die worth the cost so I can use this brass in my hunting rifle or should I just segregate my brass and use it only in the applicable rifle? |
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Quoted:
Might be an undersized chamber. These happen because reamers are expensive and they are sharpened, reducing the diameter of the chamber. If the reloads worked in the Garand, why won't they work in the 700? the M1 chamber is a tad larger than the bolt gun and from what Im seeing the die isnt sizing them down enough to work in the bolt gun. Im taliking a few thousandths. So Ill just segregate the brass and relaod accordingly. |
