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Reloading Question
corvidae
Member Posts: 68 ✭✭
I am having to use BR-2 large rifle primers on my 22-250 reloads.
I have been putting 39.2 grains of H380 under a 53GR Barnes TSX FB.
The Barnes book says you can go over this charge a little because of the ring lands groves in the bullet.
My question is ,
Do you think I should back off a few tenths of a grain to offset the large rifle primer?
I have been putting 39.2 grains of H380 under a 53GR Barnes TSX FB.
The Barnes book says you can go over this charge a little because of the ring lands groves in the bullet.
My question is ,
Do you think I should back off a few tenths of a grain to offset the large rifle primer?
Comments
270 wsm Winchester Supreme loaded with a 130 grain balistic silvertip bullet. I am looking mostly for powder charge and powder type. I have a friend that will reload them for me but I want to stick with the factrory specs because it shoots soooo well.
Thanks
Steve
If I fire a factory round in my bolt action then it should form fit to the chamber right? If this is the case then if i resize the case back to factory standards then am I decreasing case life and potentially creating headspace issues? I am new to reloading and have been taking baby steps to make sure I understand the basics and foundation.
Did a search under headspace and resizing and didn't get much back.
Thanks.
GH1[:)]
I've checked Hodgdon, and they list the same load for rifle and pistol.
Advice would REALLY be appreciated right now. Thanks.
O Lord,
grant me the Serenity
to accept the things
I cannot change
the courage to change the things I can,
and the supreme firepower to make the difference.
larry
I noticed the problem when I switched from the Hornady boat-tails to any flat bottom/spitzer head.
The problem is I am getting a very small bulge in the brass right at the base of the bullet. It's not enough to affect the round cycling in my pistol but it is just annoying to look at.
I was just wondering if anyone might know the cause and possibly a solution.
THANKS! in advance.
thanks
Last questions. I've recently came across a couple of older reloading guides. One is a Hercules, copy right date is 1978 and a Hodgdon, copy right date is unknown but it states that it is the second printing. Should I use these and if so are the powders listed going to be hard to find? TIA for any help.[:)]
Born To Hunt... Forced To Work... #@!#$!!
any help appreciated, thanks
When you fire the case does expand to form fit your chamber. It also springs back just a bit, allowing for extraction. The idea behind resizing is to reduce the neck diameter to accept and hold a new bullet and to bump the shoulder back just enough to have very little or no resistance to closing the bolt.
If you set your F/L die to touch the ram you are indeed probably "over-resizing" the case. When the F/L die is set to touch the top of the ram it is pushing the shoulder back many thousandths of an inch more than necessary. The brass has to flow during resizing, so it flows to the neck making it longer.
Upon a second firing the brass has to again flow to fill the chamber and it flows from just above the web area. This is what weakens the brass, reducing useful life.
When a die is properly set for a bolt gun the neck gets resized to about 75% of its length. The shoulder is not touched by the F/L die! My theory is the metal flows back a bit towards the case reducing the shoulder just enough to fit the chamber again.
After three or so firings you will notice the bolt is getting stiff to closing on newly sized cases. That is when the shoulder AND BASE needs bumped back a bit; and is a good time to anneal the necks too. If you use Redding S dies with the proper diameter bushing; and the proper use of F/L die the cases last for many firings.
Headspace issues are created when you willy-nilly shove the shoulder back, making the case too short for the chamber, this greatly reduces case life.
The easiest way to set the die is to remove the firing pin assembly from the bolt and start sizing and adjusting the die downward until you feel just a tad of resistance. Turn it down another 1/4 to 1/2 turn and lock it into place. Your case should show a clear line on the neck where the die stopped sizing.
If you are going to use the F/L die for sizing, without getting the neck die you will need to fire the cases until they are getting too tight. At that point you reset the sizing die to squeeze the base back enough to again chamber easily.
NOTE; you must remove the firing pin so you can feel the case without feeling the spring tension on the firing pin during closure.
Short and sweet
Emmett