I was wondering if load development with new brass is a good idea. How much volume is changed after firing if I FL size all my cases. Thanks.
Load development with new brass? of fire form 1st.
- Thread starter turbohardtop
- Start date
Re: Load development with new brass? of fire form 1st.
I personally think that new brass that you will continue to use will be a good idea.
I speak of Lupua brass, that is what I have experience with.
I don't think that the brass volume will change very little in the "Fire formed" state after being FL resized.
I personally think that new brass that you will continue to use will be a good idea.
I speak of Lupua brass, that is what I have experience with.
I don't think that the brass volume will change very little in the "Fire formed" state after being FL resized.
Re: Load development with new brass? of fire form 1st.
I bought 500pc of Winchester 7mm08 Remington brass, which I subsequently necked-down to 260 Remington.
It so happened that Winchester 7mm08 Remington brass went on sale right as I was reaching the end of that first 500pc, so I bought another 1000pc (same lot number).
So I've just been working my way through all 1500pc.
I know some people prefer once-fired & neck-sized to virgin brass, but I've been really happy with this new brass so far.
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I bought 500pc of Winchester 7mm08 Remington brass, which I subsequently necked-down to 260 Remington.
It so happened that Winchester 7mm08 Remington brass went on sale right as I was reaching the end of that first 500pc, so I bought another 1000pc (same lot number).
So I've just been working my way through all 1500pc.
I know some people prefer once-fired & neck-sized to virgin brass, but I've been really happy with this new brass so far.
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Re: Load development with new brass? of fire form 1st.
It depends on your chamber. I say this because of my first hand experience with virgin brass then taking same brass, now once fired, running it through a full length sizer or neck sizing it with the same load caused the groups to go to hell in my big and sloppy Remington cut chamber. This is why I must neck size brass for consistent results or use virgin brass. The load I was referring to was 45.0 of Varget in virgin win brass with a 175'smk at 2.810 shot .4" then I full length sized then to get .8-1.0"....'and sometimes worse. In fact I could never get the 1x fired win brass to get back to .4"s no matter how I adjusted the load.
It depends on your chamber. I say this because of my first hand experience with virgin brass then taking same brass, now once fired, running it through a full length sizer or neck sizing it with the same load caused the groups to go to hell in my big and sloppy Remington cut chamber. This is why I must neck size brass for consistent results or use virgin brass. The load I was referring to was 45.0 of Varget in virgin win brass with a 175'smk at 2.810 shot .4" then I full length sized then to get .8-1.0"....'and sometimes worse. In fact I could never get the 1x fired win brass to get back to .4"s no matter how I adjusted the load.
Re: Load development with new brass? of fire form 1st.
Tango, so your saying virgin brass for whatever reason, gives you the best groups and no amount of research you put into once fired brass gave you good results?
Tango, so your saying virgin brass for whatever reason, gives you the best groups and no amount of research you put into once fired brass gave you good results?
Re: Load development with new brass? of fire form 1st.
For the most part ...yes. I tried to adjust the load a few .1's of a grain each way but it never shot the same as virgin brass. Weird.
For the most part ...yes. I tried to adjust the load a few .1's of a grain each way but it never shot the same as virgin brass. Weird.
Re: Load development with new brass? of fire form 1st.
Your load development with the virgin brass should be close enough to the once fired brass if not identical.
However, I would not blindly FL size your cases every time.
Just adjust the sizer to sizer to the bottom of the neck and lightly bump the shoulder, that way the brass will fit the chamber better and not stretch as much.
TC
Your load development with the virgin brass should be close enough to the once fired brass if not identical.
However, I would not blindly FL size your cases every time.
Just adjust the sizer to sizer to the bottom of the neck and lightly bump the shoulder, that way the brass will fit the chamber better and not stretch as much.
TC
Re: Load development with new brass? of fire form 1st.
Just a thought, but you could always measure the capacity of a before and after case. Water works well. I've noted that it takes about a grains worth of Varget to fire form new Lapua brass in my particular rifle. Your variables will be different.
Just a thought, but you could always measure the capacity of a before and after case. Water works well. I've noted that it takes about a grains worth of Varget to fire form new Lapua brass in my particular rifle. Your variables will be different.
