Pennsylvania Firearm Owners Association
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  1. #1
    Join Date
    Dec 2009
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    Halifax, Pennsylvania
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    Default Need help with some reloading...

    So Iím loading for a Remington 7600 270win a Tikka t3 lite 7mag and now my new Weatherby 7-08Rem. Iím doing well with the 7mag with RL22 and IMR7828 and just grabbed a pound of 7828ssc to try. I only put my first rounds through the 7-08 today so not too concerned there yet but my 7600 with factory Rem Core-Lokt 130gr put 2 shots touching at 200yds the third wasnít fired cause they touched and thatís awesome!!! I started loading with H4831 and did a ladder test for accuracy only since I donít have a chrono and got about 1.25Ē at 100. I tried H4350 and RL17 since I have a 22Ē barrel and wasnít impressed with either. I tried RL16 a few weeks ago with good accuracy but nothing better than the 4831. Iím shooting hornady sst130, Sierra 130 boat tail, Nosler Accubond 130. I have partitions in 130 and interlocks in 130 and 140. My seating is at 3.26 for all so far. Any help to try and get it under 1Ē

  2. #2
    Join Date
    Nov 2010
    Location
    Piney twp, Pennsylvania
    (Clarion County)
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    Default Re: Need help with some reloading...

    Klutch, enjoy your enthusiasm. Sounds like you're doing good.
    On the reloading side different primers or adjustment of COAL may make a difference.
    Did you measure the chamber to determine initial COAL?
    And old time saying is 10 shot groups don't lie. This will help determine if it's the load or the rifle that needs tweaked.
    Just wanted to add I haven't touched a 7600 for a few decades but would of been satisfied with a 1.25" group then.
    Learned about a scope cut with one of those off the bench.
    It ain't what they call you, it's what you answer to.

  3. #3
    Join Date
    Jan 2019
    Location
    Bedford
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    Default Re: Need help with some reloading...

    A Chrono is an invaluable tool for load development. The Factory ammo has a 3060fps muzzle velocity according to Rem,
    and your powders will need almost a max charge to garner that same speed. According to the Hodgdon site, your IMR 7828
    should be a good choice to get the speeds up. Have you measured/verify barrel twist rate? You may want to work up some
    of the 140gr loads if the twist rate is faster than what the 130s want.

  4. #4
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    Dec 2009
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    Halifax, Pennsylvania
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    Default Re: Need help with some reloading...

    Quote Originally Posted by cephas View Post
    Klutch, enjoy your enthusiasm. Sounds like you're doing good.
    On the reloading side different primers or adjustment of COAL may make a difference.
    Did you measure the chamber to determine initial COAL?
    And old time saying is 10 shot groups don't lie. This will help determine if it's the load or the rifle that needs tweaked.
    Just wanted to add I haven't touched a 7600 for a few decades but would of been satisfied with a 1.25" group then.
    Learned about a scope cut with one of those off the bench.
    Haha. I learned about it with a Remington ADL in 243 going prone only about 5 years ago. I*m happy with the load/Gun for deer but I think it should shoot better even by a small amount. It also could be me my eyes are a little more fuzzy so maybe my shooting isn*t so Annie Oakley these days. I did measure the chamber with a fired case and a lose fitting bullet but I think I*m gonna seat them to book and gradually push them out if groups open up. If I remember right many years ago I loaded all my 270 to 3.23* no matter what I fired it from. I started using Rem 9 1/2 and now I*m with federal 210 I have cci and Winchester and even some magnums so I can switch it up. I appreciate the info
    Quote Originally Posted by 85MikeTPI View Post
    A Chrono is an invaluable tool for load development. The Factory ammo has a 3060fps muzzle velocity according to Rem,
    and your powders will need almost a max charge to garner that same speed. According to the Hodgdon site, your IMR 7828
    should be a good choice to get the speeds up. Have you measured/verify barrel twist rate? You may want to work up some
    of the 140gr loads if the twist rate is faster than what the 130s want.
    I*ll admit I didn*t load to max on anything yet not for any other reason than if I got good accuracy I was leaving it there since it*s for whitetail only and paper hinting until season hits. My 7600 is 1/10 twist and should stabilize 130 and 140 and 150 bookies. I*m still experimenting with some combos so time will tell

  5. #5
    Join Date
    Feb 2007
    Location
    Apolacon Township, Pennsylvania
    (Susquehanna County)
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    Default Re: Need help with some reloading...

    Just for grins and giggles give the Norma reloading data a look and see if it looks promising. I use Norma MRP for my 6.5X55 S.E. and with both Sierra and Hornady 140 gr. bullets exceed the "book" velocity without hitting the max load.
    Last edited by Brick; October 24th, 2020 at 06:24 PM.

  6. #6
    Join Date
    Oct 2012
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    Jim Thorpe, Pennsylvania
    (Carbon County)
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    Default Re: Need help with some reloading...

    Try more bland bullets. The new "Super bullets" tend to fly with less accuracy. Anything I load for deer gets Remington Corlokt bullets if available. Hornady soft points after that. I have a 7x57 that I shoot Remington 140 gr PSP Corlokts out of and it is awesome-way more accurate than I can shoot. I am not overly impressed with bullet performance on some of the newer designs either.

  7. #7
    Join Date
    Mar 2008
    Location
    Sterling, Pennsylvania
    (Wayne County)
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    Default Re: Need help with some reloading...

    Klutch, do you have the tool to measure the factory core-lost ammo from base to ogive? I would seat all reloads to same length because it looks like it may be your sweet spot. I had a problem with a 6.5 creedmoor, some stuff would shoot sub moa and some would shoot for crap. I measured the length to ogive on the good stuff and set all of the rest to same, problem solved.

  8. #8
    Join Date
    Oct 2012
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    Douglassville, Pennsylvania
    (Berks County)
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    Default Re: Need help with some reloading...

    Quote Originally Posted by Qtrborecrazy View Post
    Klutch, do you have the tool to measure the factory core-lost ammo from base to ogive? I would seat all reloads to same length because it looks like it may be your sweet spot. I had a problem with a 6.5 creedmoor, some stuff would shoot sub moa and some would shoot for crap. I measured the length to ogive on the good stuff and set all of the rest to same, problem solved.
    What's 'ogive'?
    Thank you for keeping me safe.

  9. #9
    Join Date
    Feb 2010
    Location
    Levittown, Pennsylvania
    (Bucks County)
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    Default Re: Need help with some reloading...

    Shhh-h-h-h-hh......
    There are only two kinds of guns. Those I have and those I want.

  10. #10
    Join Date
    Nov 2010
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    Piney twp, Pennsylvania
    (Clarion County)
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    Default Re: Need help with some reloading...

    Quote Originally Posted by Walleye Hunter View Post
    What's 'ogive'?
    Simply, the ogive is that tapered (curved) part of the bullet in front of the driving or bearing surface.
    https://www.grantcunningham.com/2015...-ogive-anyhow/
    th.jpeg
    It ain't what they call you, it's what you answer to.

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