#1
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What's a good fire-forming load for 17 Fireball?
I went ahead and made a bunch of 17 Fireball brass from .223 brass. I used PMC brass and RP brass -- I'll be keeping the cases seperated. Right now I use 16.3gr of H4198 and 20gr Hornady V-max bullets in my AR. The Max H4198 load for the 17 Fireball per Hodgdon is 17.3gr so do you think I can just stick with my regular 16.3gr load and use it to form the fresh made brass or should I drop back to say 16.0gr which is the minimum load per Hodgdon?
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#2
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How tight are the formed brass in your chamber? I always start adding masking tape to the base of any case that feels loose, and determine how much headspace is there by the thickness of the tape stack up to the thickness causing resistance.
I would, if the cases fits loose, jam the bullet 0.005" and reduce the load to 16.0. Allen |
#3
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In my situation I used about 1.5 grains less of Benchmark to get the same velocity in my 17 RFB from .223 brass. I would say this is because the case walls are heavier and there is less internal volume. Hopefully you have a chronograph to track and maintain velocities which relate to the pressure. Bill
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#4
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#5
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It sounds like you have a good fit with the chamber. I would still consider setting the bullets .005 into the lands and give a few rounds a try before loading all the brass, but I do have a range on my property making this easy to do.
I didn't think of the brass difference and am sure GHD's experience is spot on for charge. Allen |
#6
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Edit to add: I tried three rounds with 16.0gr of H4198 and they worked fine so I went to 16.3gr and they worked fine also. I plan on measuring the fired cases to see if any change took place. I can't see any difference just eyeballing them. Last edited by 22_boomer; 08-18-2012 at 06:31 PM. |
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