Posted: 8/30/2009 11:30:23 AM EDT
| My .357 magnum loads OAL is listed as 1.610 and im getting 1.609 Is this going to effect anything? |
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fwiw, both the lyman and hornady manuals list overall maximum lengths of 1.590" for the cartridge. as you have discovered it is difficult to maintain a seating length of 0.001". I usually measure a factory round, and try to match that length within 5 thousandths, one way or another.
-matt edit: damn you and your edits popnfesh! 
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Quoted:
fwiw, both the lyman and hornady manuals list overall maximum lengths of 1.590" for the cartridge. as you have discovered it is difficult to maintain a seating length of 0.001". I usually measure a factory round, and try to match that length within 5 thousandths, one way or another. -matt edit: damn you and your edits popnfesh! Im going by the data on the hodgdon site, for the powder im useing.Except theyh dont say that if the COL is the maximum, im guessing now that 1.610 is maximum COL for this load? |
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Quoted:
Quoted:
fwiw, both the lyman and hornady manuals list overall maximum lengths of 1.590" for the cartridge. as you have discovered it is difficult to maintain a seating length of 0.001". I usually measure a factory round, and try to match that length within 5 thousandths, one way or another. -matt edit: damn you and your edits popnfesh! Im going by the data on the hodgdon site, for the powder im useing.Except theyh dont say that if the COL is the maximum, im guessing now that 1.610 is maximum COL for this load? I just seat them to where the crimp ring is in the bullet, take the seating stem out of the die, bring the die down a bit to get a decent roll crimp, then readjust the seating stem...be sure to set your belling die enough so that you don't shave the base of the bullets... (this will be a bit different if use a seperate crimp die...but this seems to be the procedure for most die sets). If the finished cartridge fits in the cylinders of my revolvers, it works for me... |
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No.
In certain revolvers it may be an issue depending on how the cylinder is cut as well as the ogive of the bullet you are using. If they are being fired in a carbine often times you can vary OAL forward or back to get it to shoot better. Some like more freebore than others. Experiment. |
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Quoted:
Quoted:
fwiw, both the lyman and hornady manuals list overall maximum lengths of 1.590" for the cartridge. as you have discovered it is difficult to maintain a seating length of 0.001". I usually measure a factory round, and try to match that length within 5 thousandths, one way or another. -matt edit: damn you and your edits popnfesh! Im going by the data on the hodgdon site, for the powder im useing.Except theyh dont say that if the COL is the maximum, im guessing now that 1.610 is maximum COL for this load? Those cast lead are probably longer bullets making the OAL a bit different than the same weight of a jacketed which wouldn't have lube grooves. Either way .001" is only going to make a minimal change- 60psi increase in chamber pressure- nothing to worry about. If you are getting with in a thou of OAL you are doing a fine job. |