Quantcast

Hornady Factory loaded case length shorter than Reload cases?

Discussion in 'Handloading and Reloading' started by ACES&8S, Oct 20, 2019.

  1. ACES&8S

    ACES&8S Member

    Joined:
    Oct 21, 2017
    Messages:
    657
    Location:
    Virginia
    Wondering if anyone else has noticed if you use Hornady Factory loaded cases that they
    are below BOOK minimum length, at least that is my experience with 45/70 & 300 Win Mag.
    Can't recall large revolver differences but I did notice in one box there were 2 cases that
    had different type rims, can't remember if I kept them.
    So it makes me wonder for instance with 300 Win Mag if I shouldn't trim the cases to match
    the factory cases which average 2.602" while the RELOAD type cases run the whole length
    which is by the book 2.610" to 2.620"
    This is by memory so a grain of salt but the 45/70 Factory were a lot shorter than minimum.
    Any thoughts?
     
  2. buck460XVR

    buck460XVR Member

    Joined:
    Feb 6, 2007
    Messages:
    7,345
    Hornady uses shortened case when loading their "leverevolution" type and some of their other "Flex-tip" bullets so the ammo fits in all revolver cylinders and functions in lever actions. You will see them, in some calibers, in their manuals, telling you to shorten cases, if you yourself are loading them with the longer, more aerodynamic bullets. If loading a bullet with a cannelure, and crimping to the center of it, you are going to get less case capacity and should adjust loads accordingly. If you are loading to OAL then case capacity remains the same.
     
  3. Slamfire

    Slamfire Member

    Joined:
    Dec 29, 2006
    Messages:
    10,144
    Location:
    Alabama
    I am sure some F Class guys are going to yell at me. Yesterday at a match, an F Class bud of mine was describing the neck truing he does. These guys are seeing things that I never saw on the 2 MOA target.

    Anyway case trim length is safety critical in two ways:

    1) The case neck must be long enough to hold the bullet. If the case neck is so short the bullet falls off, then the case neck is too short.

    2) You don't want the case neck jammed in the throat and pinching the bullet.

    These assume that the case neck tension is sufficient to hold the bullet. If the case can't do that, there is no need to trim the case, because something is really off and you need to figure out what is going on, before going past Go and collecting your $200.

    Notice the clearance I have between a trimmed case neck and the throat on this cartridge headspace gauge.

    XOHUEzE.jpg

    I have lots of clearance. I trim my cases to OAL minimum because I have had case necks so long they jammed in the throat and blew primers. In my rifles, shooting prone, or even with a bench rest, I cannot tell any difference on target with varying trim lengths. (F Class guys are free to call me a fool, right now) For my 308, 30-06, and some other 30 caliber cases, I use a Giruard case trimmer. In that trimmer, the shoulder to the neck distance determines trim length, not base to neck length. For my 6.5 and 270 cases, I use an RCBS lathe trimmer and that measures case length from the base. As long as I don't trim too much, and don't trim too little, everything goes, more or less, in the middle.

    By the way, I have shot lots of 30-06 cases which I over trimmed, by as much as 0.02", when setting up trim length, and I can't tell on target. Maybe it affects neck tension, may not.

    Trim your cases to book minimum and stop worrying about 0.01" plus or minus 0.005"

    Don't forget to bevel the case mouths!
     
    ACES&8S likes this.
  4. ReloaderFred

    ReloaderFred Member

    Joined:
    Apr 28, 2005
    Messages:
    6,210
    Location:
    Oregon Coast
    The brass Hornady sells packaged for reloading is SAAMI spec, which means it's going to be within the maximum and minimum length for each caliber. As buck460XVR says, their loaded ammunition is shortened to accommodate their FlexTip bullets. It's especially noticeable in .45-70 and .45 Colt Hornady factory ammunition. I just sort them out and load them separately, after adjusting my crimp dies accordingly. They shoot just like any other ammunition that's loaded properly.

    Hope this helps.

    Fred
     
    ACES&8S likes this.
  5. buck460XVR

    buck460XVR Member

    Joined:
    Feb 6, 2007
    Messages:
    7,345
    I think the OP is concerned because the factory cases are quite a bit shorter than book minimum. What I see a lot of is when folks load these shortened cases, crimp in the cannelure and then experience less then the book OAL for the bullet. They are confused as to whether crimp in the center of the cannelure or crimp to book OAL. If it has a cannelure, I always crimp to the center and don't worry about OAL as long as the cases themselves are not too long.
     
    RealGun, ACES&8S and Slamfire like this.
  6. Walkalong

    Walkalong Moderator Staff Member

    Joined:
    Nov 20, 2006
    Messages:
    59,466
    Location:
    Alabama
    I had a few of their .357 cases that were short, I just tossed them in the scrap bin, not enough cases to worry with.
     
    ACES&8S likes this.
  7. ACES&8S

    ACES&8S Member

    Joined:
    Oct 21, 2017
    Messages:
    657
    Location:
    Virginia
    Thanks for the replies so far. And a special thanks to Slamfire.
    I have reloaded for 300 Win Mag before with other cases & always trimmed to minimum with no problems.
    All the eq was from a friend who was learning from me, how to begin loading.
    Now I got the Ruger Precision Rifle in 300 Win Mag & like always I bought FACTORY AMMO to break it in
    & make sure all is well with the machine.
    It is shooting -1" at 100 yards with Hornady 150 grain during the barrel lapping that I decided to go ALL IN.
    Got FL & Neck Dies along with what I thought would be MATCHING cases by getting 100 Hornady new ones.
    Now I have these short cases which will never stretch that far & can't be loaded anywhere near max or whatever.
    Did the same thing with 45/70 but like you guys said, I thought maybe it was for flextip & lever rifles.
     
    Slamfire likes this.
  8. FLIGHT762

    FLIGHT762 Member

    Joined:
    Jun 7, 2011
    Messages:
    254
    Location:
    Nor Cal/SFO area
    You're overthinking this. We're talking about .008" in case length. This is not going to affect anything in a 300 Win. Mag. case. Just load them & shoot them. They will stretch over usage. Why would you think you can't load these cases near maximum loads?

    You're not talking about shoulder datum movement here, which would cause brass to over stretch and cause early case failure.

    Load 10 with the new cases and 10 with the other cases. I don't think you will see a significant difference. I would keep the new 100 cases separate from other cases just for lot to lot consistency.
     
    ACES&8S, Rule3, ReloaderFred and 2 others like this.
  9. RealGun

    RealGun Member

    Joined:
    Mar 21, 2004
    Messages:
    8,294
    Location:
    Upstate SC
    Those are the ones I might load to 38+p for smaller guns or just target. If I didn't always sort by head stamp though, or segregate case length ranges within head stamp, I wouldn't want them in the mix. I have some Hornady cowboy in 45 Colt that are full length, so indeed it depends what bullet was loaded.
     
    ACES&8S likes this.
  10. ACES&8S

    ACES&8S Member

    Joined:
    Oct 21, 2017
    Messages:
    657
    Location:
    Virginia
    I know I can load them to max, however, it just bothers me that's all.
    I have always tried to keep cases separate by # of times fired & mfg & trimmed vs length ok & fireformed for
    each weapon & so on & so on until it isn't fun any more. Trying to keep safe & in case anything happens to me
    all my notes are as we say, SURE FIRE, if the next generation gets them.
    I reduced my calibers a couple of years ago due to so much reloading then I got this 300 win mag instead of
    the 338 mag just to stay in the 308 range & avoid my friends wanting me to load 338 Lap for them.
    Just a cry baby today.
     
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice