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Thread: while I am at it

  1. #1

    while I am at it

    how much do you bevel after you case trim?

    also when using the OAL gauge do you want to measure to the bullet touching ie. needs to be tapped out or to the point just before this?


  2. #2
    I only bevel enough to take off any burrs from trimming, so next to nothing hopefully.

    As to taking the OAL, if you use engineers blue (or felt tip) and cover the bullet. Then tap it untill it just seats on the lands. If you use "blue" or felt tip this is quite easy to see. Then measure.

    Atb, ft

  3. #3
    OAL gauges are at their best when used with the comparator fitments.

  4. #4
    Quote Originally Posted by finnbear270
    OAL gauges are at their best when used with the comparator fitments.
    I have one as measuring from the ogive seems to make sense.

  5. #5
    Hmmm I see a problem with these comparators they may not be the same diameter as YOUR BARREL so although you can get the rounds all the same length when people claim they're seating 0.005" off the lands what it means they are hoping it's 0.005" off the lands because the comparator says so does not make it true in you rifle.

    As just about every barrel is different as it's impossible to get them all the same the bore can vary slightly in diameter, the throat may be a few thou deeper the of course as the rifle is shot there is wear to take into account .

    The only way to get a true comparator is to have one made from a stub of your barrel reamed to the same depth with the same reamer otherwise well

    The thing is that most seating dies dont seat off the tip of the bullet but a point on the ogive so that point should remain constant.

  6. #6
    Brit, my usual method is, put a bullet of your current load choice in the neck of the dummy case (threaded for the oal gauge), enter the round slowly using the gauge to push the round gently onto the lands, tighten the locking screw, remove gauge, upend rifle & if needed gently push bullet back out, examine bullet for witness marks, adjust seating depth as needed with the use of vernier & comparator. Seemples!

  7. #7
    Nick, when you come round Iíll tech you the cleaning rod method Ė youíll have to bring the rod as I havenít seen mine for years! Gary

  8. #8
    SD Regular
    Join Date
    Dec 2008
    East Midlands M1/M69 Junction 21
    I only bevel enough to take off any burrs from trimming, so next to nothing hopefully.

    Inside and ou I do exactly as the above poster does. It really is all that is needed.

  9. #9
    Nick, try this,

    Take enough empty cases to fill the magazine and mark them with felt tip so they cannot be confused with live rounds.

    Make up one dummy round using a resized case without a primer or powder and the desired bullet.

    Seat the bullet in the case so that the cartridge just fits the magazine, put it into the magazine and see if it will feed from the magazine into the chamber, don't try closing the bolt yet.

    If it does not feed easily then progressively seat the bullet deeper until the dummy round will travel easily into the chamber.

    Once it does then coat the bullet with felt tip or engineers blue as suggested in previous posts and try closing the bolt then unloading the dummy round and check for any marks on the bullet from the rifling.

    If no marks adjust enough dummy rounds to fill the magazine and work them through the chamber as sometimes the first round will feed but the others may not, adjust seating depth until all rounds feed and chamber easily.

    You are almost there as you now have the maximum length of cartridge with that particular bullet that can be used in that rifle under field conditions.

    However for safety it is prudent to use the comparator to check the distance from the lands and ensure that the bullet ogive is at a safe distance from the lands for that make and type of bullet, but don't make the cartridge any longer as there is no point in seating the bullet closer to the lands as you will not be able to chamber the live cartridge easily in the field.

    If there are marks in the felt tip coating then adjust with the comparator until the bullet ogive is at a safe distance from the ogive.

    If a bullet sticks in the barrel then use a clean hardwood dowel to tap it out (just smaller than the barrel diameter so it doesn't flex). You can use a cleaning rod however there is a greater chance of damaging the barrel with a metal one.

    You can then dismantle all but one of the dummy rounds and reuse the components. the one you keep can later be seated to the depth you find most effective on your reloads so you have a reference for setting the seating die for that load at a later date.

    You can also use one of the dummy rounds as a snap cap by getting a bit of hard rubber (pencil rubber or similar) cutting it to fit the primer pocket and securing it in place with glue.



  10. #10

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