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OP
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I understand the shoulder on the 300 Savage case can be a "weak" point during reloading due to it's sharp angle but haven't read yet as to how to correct it. My older set of RCBS dies were picked up on Ebay but with w/o instructions. Figured no biggie, just adjust the seating die until the shell holder meets the bottom of the die, then adjust the seating stem until the correct OAL is met. Obviously something isn't right though. What am I doing wrong?
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Campfire Ranger
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Campfire Ranger
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I was doing the same thing with 338RCM brass on RCBS dies as well. Scratched my head raw over it.
Finally, my dad, more experienced than I, pointed out that new brass isn't always nice and smooth.
Try chamfering the inside and outside edges of the mouth real good and see if that solves it for you.
"Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other." - John Adams
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I thought I was going to be reading about cases being dimpled on the shoulder. That's easy, too much lube.
Check you die, maybe needs cleaning?
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Yup, I second chamfering the case mouth, inside and out. And a judicious cleaning of your dies, then lube up your case necks, inside and out.
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JeffG
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Are you using actual .300 Savage dies?
Are you lubing the inside case neck?
Is the correct expander ball ball on the decapping rod.
I don't think it a brass issue. I think it's a "too much force/resistance issue.
Just guessing here because I haven't watched your process, but there's something there that needs to be solved.
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Campfire Oracle
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Campfire Oracle
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Easy. Back off on your seating die......screw the seating stem in further.
Seating dies usually aren't meant to be contacting the shell holder.
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Campfire 'Bwana
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Campfire 'Bwana
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My 284 die does that to me sometimes. Very sensitive. I just back off on the depth a little bit and it fixes it.
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Could be that's why they were sold on ebay. RCBS has outstanding customer service, give them a call. Just remember that there's a three hour time difference out here.
Last edited by S99VG; 10/31/14.
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Campfire Kahuna
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Campfire Kahuna
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Easy. Back off on your seating die......screw the seating stem in further.
Seating dies usually aren't meant to be contacting the shell holder. Correct. Some seating dies are set up to crimp the brass into a cannelure on the bullet, so if too deep they will crush the cases.
_______________________________________________________ An 8 dollar driveway boy living in a T-111 shack
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Easy. Back off on your seating die......screw the seating stem in further.
Seating dies usually aren't meant to be contacting the shell holder. Correct. Some seating dies are set up to crimp the brass into a cannelure on the bullet, so if too deep they will crush the cases. I'll 'third' this recommendation - BTDT.
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It appears to me that you are crushing the shoulder down so that rather than having a 30� shoulder, you're causing the cartridge's shoulder to almost disappear. Back off your resizing die a �, a � or possibly a full turn... leaving a very short area of the very bottom of the case's neck UN-resized. As long as you're firing the cartridges in the SAME RIFLE you originally fired them in, they should chamber, fire and eject just fine. By doing so, you're only resizing the case's "neck" enough to securely "hold" the bullet. In addition, if one only "neck-sizes", the cartridges will produce somewhat greater accuracy since the cartridge case's wall will already be expanded against your rifle's chamber-walls prior to firing the cartridge. (That's an old "bench-rest shooter's trick". ) By backing off your resizing die as mentioned above, you are "neck-sizing" the cartridge case which means you are not resizing the cartridge's body, you're only resizing the cartridge's neck. Generally, doing so will increase your cartridge's "life" thus yielding considerably more reloadings of your cartridge cases. When resizing a case (any caliber), I set up the die so that it ALMOST re-sizes the full length of the neck. I.E., , I'm "neck-sizing" the case which works just fine as long as the case was originally fired in the same rifle for which you're currently re-loading, I always leave a very slight part of the bottom of the neck not resized. By doing that, there's no chance that I'll "set-back" or crush down the cartridge's shoulder which is what it appears you're doing by looking at the picture of the two cases in your initial post. I hope this helps... Please let us know how it comes out. Strength & Honor... Ron T.
It's smart to hang around old guys 'cause they know lotsa stuff...
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I'll 4th this one. The case mouth is into the crimping part of the die. When you continue to push the brass into the die it pushes the neck down into the shoulder area.
Savage...never say "never". Rick...
Join the NRA...together we stand, divided we fall!
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Campfire Ranger
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All good advice. I would add that checking the overall length of the sized case might be a good idea too- if the neck is too long it could impinge upon the end of the chamber in the seating die and scrunch the whole works back on itself, especially if the die was cut to minimal dimensions. I had that happen once when I was making .300's out of .308's and carelessly left the necks too long.
"You can lead a man to logic, but you cannot make him think." Joe Harz "Always certain, often right." Keith McCafferty
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Correct. If you are not trimming your cases to a uniform length crimping can be a problem.
Savage...never say "never". Rick...
Join the NRA...together we stand, divided we fall!
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Campfire Kahuna
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Campfire Kahuna
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Correct. If you are not trimming your cases to a uniform length crimping can be a problem. A real eye opener on this whole topic is the reloading of M-1 carbine cartridges, which headspace on the case mouth.
_______________________________________________________ An 8 dollar driveway boy living in a T-111 shack
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Campfire Ranger
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Correct. If you are not trimming your cases to a uniform length crimping can be a problem. Plus, who around here even bothers to crimp ammo intended for use in a 99?
"You can lead a man to logic, but you cannot make him think." Joe Harz "Always certain, often right." Keith McCafferty
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Correct. If you are not trimming your cases to a uniform length crimping can be a problem. Plus, who around here even bothers to crimp ammo intended for use in a 99? Good point! I never have. Another reason to love the rotary mag!!
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When I first started reloading, I thought you had to crimp the bullet. I started with RCBS dies and they are the worst to use for that. That may well be the problem. If you think you have to crimp, try Lee Dies with the collet in them.
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that looks pretty extreme. mic your expander ball. looks like the neck maybe to tight ??
plab
Gotta love them 303's
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Campfire Ranger
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Yeah, if you must crimp, do it seperately with a Lee die. If you absolutely must with an RCBS seater die, make doubly dam sure the cases are perfectly the same length and adjust the crimping stage with extremely fine adjustments 'til you get it right. YMMV.
"You can lead a man to logic, but you cannot make him think." Joe Harz "Always certain, often right." Keith McCafferty
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