I am no expert on reloading but I have done a lot the last few years. I have found the brass base hulls will reload a couple times with out resizing but the steel bases need it every time. I have a 366 and I just made it a habit to do it every time on every hull. Hope it helps.
The general rule is that not all chambers are the same size. If you shot the shells in your one and only gun and intend to reload them until discarded, resizing isn't necessary. If you have 2 or more guns in which your reloads will be shot, you should resize hulls to meet the needs of your tightest chamber and they will work in the others. If you are shooting an auto-loader, I'd suggest resizing all shells to ensure they will drop right into the chamber of that auto without any problems. If you are a scrounger and pick up shells left on the ground or collected in boxes for sale, I recommend resizing the hulls until they fit your tightest chamber the first time at least. Setting the resizer to a suitable minimum for every shot will guarantee they'll work for you no matter what......breakemall.....Bob Dodd
Perhaps not for my gun, but for my reloader, it is absolutely necessary for me to resixe shells. My reloader will not work correctly unless the hull is resized first. Have any others noticed this with a PW ?
Correct me if I'm wrong but, doesn't the reloader do this automatically? Factory set it and forget it. I'm a scrounger and never even thought about resizing loads for different guns. My AA's work in my 1100 and my K-80 equally as well. Dave T.
Dave, On my 366 you have to put the hull in the resizing die then into the plate for the next 8 stations. really slows things down. Used to resize first with a mec resizer then do my reloading. I enjoy reloading but resizing s****s. Thus the reason for asking the question about resizing benifits. Mike K.
I agree that you are best to resize if you have the time. Using the same hulls in the same gun would probably negate the need to resize. But I run all hulls through my MEC Supersizer, before reloading. DTrkow, in a MEC 650 there is no resizing operation. Also, with a Hornady 366 the resizing is a separate station. I use a 366 and by running all hulls through the Supersizer, I can skip that station. Resizing just gives me "peace of mind", even if I shoot them in the same gun all of the time. If you ever have problems on the line due to the shells not going into your gun; you will definitely experience extreme frustration. Been there and done that. Ed
I've found that I need to resize Gold Medals at least the first time. After that they go into my Kolar just fine. Seams like the longer brass tends to get stuck just outside the chamber if I don't resize. No problems with AA or Rems.
Mike: As stated I resize all my hulls through a MEC Supersizer. I can easily resize 25 shells, (1-box) per minute. Therefore I can resize a flat in 10 minutes. (Maybe less) Small price to pay for piece of mind. Several years ago I bought some one fired STS hulls from a fellow shooter. At that time I had a MEC 650. I loaded several boxes of these hulls on the 650. (no resizer) I ended up having to purchase a new box of shells to finish the 100 round event. Out of the 100 reloaded shells, I must have had 20 shells that would not go into my gun. I was frustrated and embarrassed due to the whole fiasco. What a nightmare. Never again. Ed
I also load with a 366 for 25 years and never once did I skip the resize station . How much time can be saved ?? Once you have a shell that won`t fit into the gun will be when you realize the importance of resizing .
I am also plagued with reloaders that afford me no option but to resize.
To address your question - resize. You may trade your gun or get a new one. You may get the chance to try out a new gun your buddy got. You may need to give someone a couple of boxes because they forgot their ammo or did not bring enough.
Pretty embarrassing to have shells that don't work.