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700X changes in loading

Discussion in 'Shooting Related Threads' started by gordy h, Jan 17, 2010.

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  1. gordy h

    gordy h Member

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    I just picked up a 2009 manual for IMR 700X it lists 17.5 gr for Rem STS
    with Win 209 primer,and CB- 1118-12 wad MAX load 1200 fps. Last years manual 2008 gives 19.0 gr 1250 fps as MAX load, what gives? are all I loaded( 4000 rounds) un safe? Need some input here. Thanks for your time. Butch H
     
  2. Shooter R

    Shooter R Active Member

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    If the 2008 manual gives you a "Green Light" on the 19.0 grains, I would assume it is safe to use.

    Using a WAA12 wad with STS hulls, W209, and just under an ounce and an eighth (480 grs.), my loads with 16.5 grs. chrono's at 1180 fps. with my current Lot of 700X.

    Hope this helps, Randy
     
  3. wayneo

    wayneo Active Member

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    They still have the same recipe on their reloading data web site. Pressure is 11,400 with that load. Ouch. Wayne
     
  4. rick979

    rick979 Active Member

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    I like lighter loads. I am glad I don't have 4,000 of those "hotties" loaded.
     
  5. Quack Shot

    Quack Shot Active Member

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    The pressure is the thing to watch out for. If it's over 10,000 PSI, you should approach the load with caution and try to find one with less pressure. If it's over 11,000, I would not select that load for any shells I would be using for regular target, or other shooting. Way too much room for error. Less pressure means less stress on your gun, all other things equal. Using the Claybuster CB1118-12 shows just under 10,000 PSI in the online loading tables with 17.5 grains of powder. The 19.0 grain load shows 11,400 PSI. Too hot in my opinion. They probably decontented the load from the latest manual for that reason. I would not assume that the older data is OK to use, especially with pressures up that high. Substitute the WAA12 Winchester wad and you are over the line as well, even down at 16.5 grains. Add a little variable like a deep crimp and high summer temperatures and you'd be tempting fate with the hotter loads. If you need to go faster, use a different powder or other components that would lower the pressures enough to keep it safe.
     
  6. sself

    sself TS Member

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    As wayneo noted, the 19.0 gr 700-x, win 209, CB 1118-12 (1 1/8), Rem STS hull load is still listed on Hodgdon's website. As noted, it's hot at 11,400. I don't know where you live, but if you can, you might want to reserve those loads for cold weather shooting, which should produce a significant drop in the pressure. The loads might be a good handicap option at 50 degrees or less.

    Just my 2 cents worth.

    Steven
     
  7. gordy h

    gordy h Member

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    Thanks Guys
    It's cold here in Wi.but after talking to Hodgdon they feel the old book 2008
    may be wrong, due to a change in the CB1118 plastic. So I'm going back to 17.5 there Max load.Just to be safe. After I get them cut apart and use the 700X up I think i'll try PB powder, to get more FPS with less PSI. thanks again for the input. Butch H
     
  8. edthearcher

    edthearcher Member

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    Location:
    wisconsin
    butch I use 700X 18 grains, rem. hull, blue duster wads. use to use federal primers, but felt preasure was to high. so I changed to winchester primers, that was supose to bring down the preasure according to recobs. Iam from wis also madison
     
  9. Quack Shot

    Quack Shot Active Member

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    Butch H

    If you have access to a chronograph, you might be surprised at how the 17.5 grain loads compare with factory loads. I'd also recommend trying Green Dot if you'd like to try a good handicap powder. It's less expensive than PB and will give you higher velocities at lower pressures than 700-X. Another one to look at would be International Clays. If you are looking for the 1250 fps loads, and LOTS of them, use Unique or Universal Clays. They will give you more reasonable pressures and perform well for those velocities. I would not push 700-X past the 1200 fps mark, and most likely not past the 1145 fps mark. One of my all-time favorite handicap loads involves Red Versalite Wads, Unique powder, 1 1/8 oz of decent shot, and an appropriate primer (listed in the data) in the Remington or Winchester hulls. I always try to keep the pressures under about 9500 PSI, so I have a little headroom for error. Swapping primers is also a hazard, so I use the exact components listed in the data.

    As you have found out, the component manufacturers can change their products at any time without warning or notice. We don't have any idea of what it will do, so we have to trust the manufacturers to append their data accordingly. I'd rather place that trust in myself and load conservatively using reasonably lower pressures to start with. If you have your own ballistics lab with pressure testing facilities, then you can figure it out for yourself. I don't have those resources on hand, so I have to send mine out for pressure testing if I want that information.
     
  10. FLIP

    FLIP Member

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    edthearcher,
    i have found that every time i use blueduster wads they have more felt recoil!!and i load light 16grs nito100 or 16 tightgroup
     
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