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Rebel92
Grunt Joined: Jul 20 2021 Location: Hattiesburg, MS Status: Offline Points: 541 |
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I can’t tell in your picture, but do you have the “coke bottle effect” on your reloads? From the pics it don’t look like it and mine do..
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35 Whelen
On Point Joined: Jul 11 2020 Location: Texas Status: Offline Points: 178 |
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I just finished sizing 200 pieces of LC once fired brass, no primer crimps to be found.
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JohnnyDollar
Recruit Joined: Sep 20 2021 Location: Texas, USA Status: Offline Points: 42 |
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I know you directed this question to someone else, but.....
I believe the "coke bottle" effect you refer too may be the result of full length resizing with a carbide die. You may need to back-off your resizing die a bit from the shell holder. You do not want the shell holder to contact the resizing die. |
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Rebel92
Grunt Joined: Jul 20 2021 Location: Hattiesburg, MS Status: Offline Points: 541 |
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Johnny, thanks for the input, but that is in direct contrast from what else I have seen online and in my instructions regarding the full-length carbide sizer touching the shell-holder. can you explain this further??
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35 Whelen
On Point Joined: Jul 11 2020 Location: Texas Status: Offline Points: 178 |
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You are correct in that the bottom of the sizing die should contact the shellholder. This will result in full-length sizing, which is important when loading for semi-autos. I bought an RCBS .30 Carbine carbide die and tried sizing with it without lube. This resulted in the coke bottle effect on cases. Lubing the cases solved that problem, but I figure if lube is required, then a carbide die is pretty much pointless. So I'm now using a regular sizing die.
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Smokpole
Hard Corps Joined: Oct 21 2019 Location: Madison ohio Status: Offline Points: 1057 |
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The coke bottle effect is caused by excessive sizing of the case. The sides are squeezed down further than they need to be and the base is not. Standard dies are shaped internally to the case being sized. Carbide dies use a single diameter carbide ring at the mouth of the die and are not shaped to the form of the cartridge being sized. This is why the coke bottle shape is common in carbide die resized cases but not often found in standard dies. The shape is accentuated when the case mouth is expanded for bullet seating as well. This leaves the case with a "waist". Carbide rifle dies for bottleneck cases use the carbide ring only for neck sizing so don't result in a "coke bottle' case.
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OGCA Life member
NRA Life member Ashtabula Rod and Gun Life member |
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floydthecat
Hard Corps Joined: Oct 13 2016 Location: Mississippi Status: Offline Points: 1998 |
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Can we safely say it’s just a cosmetic issue? I would rather see a bit of bottlenecking knowing the mouth is properly sized to hold the projectile as opposed to a perfect looking case that might not provide proper tension. I have had worn dies that would not size the mouth to a point that would hold a bullet. The bullet is not going to expand the mouth any further than it needs to be. I can’t even guess how many rounds of any straight-wall or carbine reloads I have fired that exhibited a slight deformity at the mouth. If they chamber and shoot, short of maybe overworking the brass a bit, it’s just a cosmetic issue to me.
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JohnnyDollar
Recruit Joined: Sep 20 2021 Location: Texas, USA Status: Offline Points: 42 |
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This is one source of my information, I thought you meant a bulge at the bottom of the case after sizing. https://www.sierrabullets.com/reload-basics/resizing-depriming/
However Smokpole has the most probable answer. Edited by JohnnyDollar - Jan 13 2022 at 6:57am |
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Rebel92
Grunt Joined: Jul 20 2021 Location: Hattiesburg, MS Status: Offline Points: 541 |
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thanks. Is the coke bottle just a cosmetic thing. Not a safety or function issue?
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floydthecat
Hard Corps Joined: Oct 13 2016 Location: Mississippi Status: Offline Points: 1998 |
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I think mostly a cosmetic issue. Partial sizing might never be a problem and likely won’t be if one loads for only one gun. However, I suggest that no two chambers can be exactly alike and it might be possible for a round sized only to fit “that” one chamber…might not fit another chamber. Far-fetched….maybe, but full length sizing eliminates that possibility as remote as it might be.
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rdftwo
Recruit Joined: Dec 06 2021 Location: Buckeye State Status: Offline Points: 39 |
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Laughed my a** off, love this guy. I can't say the same about the wife.
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Aim Small...Miss Small
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Smokpole
Hard Corps Joined: Oct 21 2019 Location: Madison ohio Status: Offline Points: 1057 |
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While the coke bottle/wasp waist appearance is not a safety issue, it does work harden the brass after a number of reloads. Your cases won't last quite as long. It really isn't much of an issue as long as you have a good supply of brass. But the less case distortion you have, the longer your brass will last.
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OGCA Life member
NRA Life member Ashtabula Rod and Gun Life member |
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Rebel92
Grunt Joined: Jul 20 2021 Location: Hattiesburg, MS Status: Offline Points: 541 |
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not gonna lie, I have went a little crazy and have bought more 30 carbine ammo in the last 2 years than was made by Lake City (not really, but I did go nuts)
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David Milisock
On Point Joined: Aug 03 2019 Location: USA Status: Offline Points: 334 |
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That's not nuts, that's practical. What I will say is from buying and chronagraphing new factory stuff is that it's in many brands clocking at 2,000+ FPS with 110 grain projectiles at 10 feet from the muzzle.
That's anywhere from 50 to 150 FPS faster than factory and the surplus I got years ago. The lousy ammo that was available was the reason I got into loading for the Carbine. I can safely get 2050 from my two rifles. After reading Hatchers notes on the cartridge in the Carbine I was surprised to see they were measuring at 20 and 50 feet.
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David Milisock
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35 Whelen
On Point Joined: Jul 11 2020 Location: Texas Status: Offline Points: 178 |
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Accurate/Western Powders has data for 110 gr. bullets that runs well over 2100 fps. Don't know that they're needed or necessary, but interesting, nevertheless.
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David Milisock
On Point Joined: Aug 03 2019 Location: USA Status: Offline Points: 334 |
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That makes sense Hatcher was at 2,000+ at 50 feet.
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David Milisock
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floydthecat
Hard Corps Joined: Oct 13 2016 Location: Mississippi Status: Offline Points: 1998 |
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Take a peak at those light projectile loads. I shoot a 85-grain Mauser SP slug that chrono’s over 2400. Hodgdon publishes a 17.5-grain H110 load at around 35,000psi pressure and 2450mv. Completely safe and pushes energy up past 1200.
You can really make a 7.62x33 sing if you have the ability and equipment to play.
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David Milisock
On Point Joined: Aug 03 2019 Location: USA Status: Offline Points: 334 |
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I check the Accurate site, the current data and test barrel for the data is 20" loss in an 18" will be 50 to 100 FPS. Lists 2153 FPS.
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David Milisock
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Rebel92
Grunt Joined: Jul 20 2021 Location: Hattiesburg, MS Status: Offline Points: 541 |
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update:
Reloading has went great. I thought it would be cheaper, but all it has done has increased the amount i shoot Have learned alot from you guys, thanks again. Have loaded up around 1500, shot about half of them. Have learned some things about my carbines (i.e. that some are picky and prefer the COL on the short end of 1.64 and others will digest them up to 1.68). I also have my Bayou Bullets coming in tomorrow that I ordered in January that I am eager to try out. Even though they are 115 grain vs 110, still load 14grains of 110 or 296? I think 35whelen said something to that effect.
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Sawbones
On Point Joined: Mar 04 2022 Location: Texas Status: Offline Points: 150 |
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I've been reloading for 36 years. I am new to 30 carbine reloading and am on the learning curve as I write this. Here are some Pearls to consider. Case length is more critical than most think. Consider this: Does it take more energy (pressure) to propel a bullet out of a 1.290" length case than a 1.280" length case? You bet your boots it does. That difference affects accuracy. Reloading ain't fun if your looking at shooting 100 rounds in 1 plink session. I reload everything in my gun safe save for the rimfire stuff so I treated myself to an RCBS Trim Mate case prep. machine. (Google Youtube RCBS trim mate and watch the videos) With that machine properly furnished w/ trimming equipment one can run a de-capped, sized case: 1) trim to 1.280 using the Lee Case length gauge (Google it up), 2) clean the primer pocket by using the RCBS small pocket reamer (which reams to a finite depth then only cleans the crud outa the pocket afterward) 3) chamfer the mouth of the casing all in <8-10 seconds per case! Give it a try. I told my guru reload friend about mine and he scoffed and laughed, "Smith you and your stoopid ideas" I bought him one, delivered , set it up and demonstrated it. "It's all yours idiot, for the welding job you did on my stealth hunting golf cart." He tried it out and you'd think I had just handed him a sack of cut diamonds. "Hey, this works!" I convinced him.
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"Always do sober what you said you'd do drunk. That will teach you to keep your mouth shut." Ernest Hemingway
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