I'm guessing this has been discussed at length in this forum, so I'll use my newness to the discussions as my excuse if I'm asking a question that's been answered many times.....If you shoot the same gun, is it necessary to resize AA, STS, or other quality brass base hulls? I'm asking because I'm reloading with an old ('70s vintage) MEC 650 with no resizing station. I can answer my own question in regards to Model 12s....at least the ones I own (4 of them) and the answer is no, it's not necessary. I reload AA & STS as long as they will crimp & hold shot. No resizing and they fall into the chamber & eject, no problem, always. But what about other guns? Seems to me that if they shoot & eject, they should shoot & eject again without resizing as long as it all happens in the same gun. Thoughts?
When is Resizing Necessary
jnalley
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I'm guessing this has been discussed at length in this forum, so I'll use my newness to the discussions as my excuse if I'm asking a question that's been answered many times.....If you shoot the same gun, is it necessary to resize AA, STS, or other quality brass base hulls? I'm asking because I'm reloading with an old ('70s vintage) MEC 650 with no resizing station. I can answer my own question in regards to Model 12s....at least the ones I own (4 of them) and the answer is no, it's not necessary. I reload AA & STS as long as they will crimp & hold shot. No resizing and they fall into the chamber & eject, no problem, always. But what about other guns? Seems to me that if they shoot & eject, they should shoot & eject again without resizing as long as it all happens in the same gun. Thoughts?
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no need to resize if you use them in the same gun all the time
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My vote is always. If for no other reason the brass will catch the knife edge on the barrel of the a400
I'm sure overall it's better to resize each time you reload. However, as I mentioned, my loader does not have a resizing station. It's not been a problem at all with either of my M12 trap guns. However, I just purchased a new-to-me late '70s or early '80s Winchester 101 and it will not close on shells that have been shot with another gun but not resized. That's actually not totally true, sometimes it will & sometimes it won't. Since you never know, you've got to resize. Thanks for all the feedback & info. Oh, I finally noticed there's a section for reloading which, I assume, is where I should have posted this question to begin with!
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The gun is only one factor in the decision to resize. It's true that any hull fired from my gun will go back into my gun without effort IF it came out of the chamber without effort.
The problem is that the steel bases I use most often will not slip easily into the resizing dies of my PW presses if they will slip in at all. The chambers in my Browning XTs are all in the .810-.812" range; the sizing rings of my PW dies measure .806"-.806". It requires considerable effort to stuff a steel base that size into a resizing die that size and even more effort to shove it out again. That effort eventually takes a toll on the machinery so resizing the bases in a dedicated resizer is a must-do to keep from over-stressing presses that were designed around easy-to-resize brass bases.
Your comment re "toll on the machinery" is the reason I seldom shoot steel based shells. Too often, they stick in my M12 and it takes a real pull/jerk back on the forearm to get them out. Can't be good for the forearm, slide, extractors, etc.
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Your press actually has a resizing station. It is just a separate step. Just resize all you shells and then reload them.
Check page #10
https://www.mecshootingsports.com/Content/documents/650.pdf
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I've never tried this, but I'm going to reload 10 STS hulls and 10 Gun Club hulls (starting with factory fresh shells) on a Lee Load-All 2 to avoid resizing them to see how much they expand each time they're fired or how long it takes before they don't slip easily into the chamber... same gun, same formula, same components... everything same same. I'll reload them the number of times I reload anything... 5 times... before I discard them.
Well...ain't that something! I bought the loader in the early '70s and then put it in a box in 1975 when I quit shooting trap. Started back loading with it about 7 months ago. If I ever knew you could resize on it, it was long forgotten! I probably never knew since I seem to have a natural aversion to reading directions. I appreciate you telling me! Thanks
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Many a good man has fallen victim to this problem....lol
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