I bought a used Stevens 200 in 7mm-08. Shoots well, especially with my hand loads. Bought it to hunt, and possible silhouette shoots.
You are a reloader. you purchased a rifle, you fired the rifle and reloaded the fired cases. Your reloades improved the accuracy.
And then? You purchased a go-gage and a no go-gage, the bolt closed on the go-gage and you should not have been surprised, then you chambered the no go-gage and the bolt closed.
By the time a reloader sizes cases fired in his rifle he should know the length of the chamber from the shoulder to the bolt face. At the same time the reloader should know the difference in length between the chamber from the shoulder to the bolt face and the length of the case from the shoulder to the case head.
Knowing the difference in length between the two with simple math the reloader should know the amount of case head clearance. When no consideration is given to adjusting the die to control the length of the case from the shoulder to the case head the reloader is perpetuating case travel.
As I have said before "I am the fan of cutting down on all that case travel".
Do a cast? You have fired cases, Then there is the condition of the rifle ahead of the chamber. The Ackley reamer will not clean up throat erosion.
The claw: The firing pin strikes the primer, my firing pin crushes the primer, on my rifles that have ammo that takes off for the front of the chamber/shoulder when avoiding the primer strike I control the length of the case from the shoulder to the case head. I cut down on all that case travel. Many years ago I was told these stories about the events created when the firing pin struck the primer, and, to me, I said to myself “Self, you can not take theses
friends seriously”.
Point, a builder of 5 magnificent 03 rifles chambered to wildcat 7mm had 5 of 10 case head separations when fire forming cases. The Springfield has a claw, the Springfield does not have ‘THE CLAW’. I told him I could have fixed it before he left the shop or I could have fixed it at the range just long enough to allow fire forming the cases, I did explain I was a case former, I form first then fire. Then there is that part where the case stretches and that stretch causes case head separation. They could not understand the part where my shoulders did not move, my shoulders are erased/flatten and stay in the same place. My new shoulder is a new shoulder that is formed when I fire. Then the logic, if my shoulder does not move, the case did not travel forward in an effort to avoid the firing pin strike. The rest of the logic, the case expanded to form to the chamber and the neck gets shorter, as opposed to the case gets shorter when fire forming. The case get longer from the shoulder to the case head and shortens from the shoulder/neck juncture to the end of the neck.
Belts and rims, the rim and or belt has a purpose, both are designed to hold the case to the rear, in the beginning they had little to no interest in what happened in front of the rim and or belt, by design the case body was designed to fill the chamber. Minimum length/sized cases were safer than cases that filled the chamber, when chambered. It had to do with time. The more time it took for the case to fill the chamber the safer the pressure, a case that fills the chamber to fit starts to build pressure in the shortest amount of time, for those that bleieve ‘time is a factor.
Other points, I have fired 8mm57 ammo in an 8mm/06 chamber. I ejected 30/06 cases with very short necks, what does that mean?? If the case took off for the shoulder of the chamber in an effort to avoid being struck by the firing pin, the neck length would not have changed and the case would have separated from the case head because we all know the case will not stretch .127” between the case body and case head.
Any help would be greatly appreciated!!!
(although I suspect I know what you are going to tell me)
If the bolt closes on the no go-gage the 7mm08 will not clean up the chamber. But, it is your rifle, reamer and die, I would suggest another barrel or setting the barrel back.
http://www.huntinggearguy.com/rifle-reviews/stevens-200-review/
The nice thing about the Stevens, as the review says, it is the most economical way to acquire a 110 action. meaning the length of the chamber can be reduced by screwing the barrel in. You could use a new/unfired case, the unfired case is .004” shorter from the shoulder to the case head than the a go-gage length chamber from the shoulder to the bolt face.
I am assuming you have case length comparators, good news, you can use new ammo as a standard and you have a go-gage, there are a few that use the go-gage as a standard, if is possible to check the ability of a shell holder and die to return a case to minimum length. I do, I can and I use the other standard, the feeler gage.
F. Guffey
Last edited by a moderator: