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Posted: 7/17/2012 3:25:56 AM EDT
The manual will tell you what a min oal should be. But how close to the length should you be, over and under the mark. What is considered allowable? Can you go below the min oal? I would think not. The manual does not really cover this and I have been told several different things. Again this is what is fine tuning is all about and you should never follow anyone's recipies. 45 oal on a 230 jacketed bullet is stated, 1.275. I have some at 1.257 & 1.264 while working with someone else and they said this was close enough. I was getting set up to do some 185 jswc and the overall length now is supposed to be 1.135. I have a couple of dummy's set at 1.176. The seem to feed fine. But wanted another opinion from u guys.
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my suggestion with pistol is go about as long as will still fit in the mag, feed properly, and still gives good neck tension.
Too short and you are decreasing case volume possibly resulting in over pressure. Too long they may not fit the mag, feed properly or if you have a short little bullet not enough neck tension. I personally have found such a variation in bullet length that i measure a sample of bullets and choose the longest ones and use that to set the seating depth close to mag length, generally the o gives are all the same just tip shape varies so all my bullets get seated the same amount in to the case and the longest ones will still fit the mag and feed. Another popular method and probably the most accurate is to set seating depth based on ogive with a comparator, someone may come along and give more details on that. |
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Quoted:
OAL in the 45 acp is not manual specific it is firearm specific. The handloader must find the OAL that fits-feeds-fires in his or her firearm. After that, start low and work up. After all, if it doesn't fit-feed-fire there is not need to worry about pressure. +1, there it is. I always work my loads up first with OAL to my specific barrel and then charge weight. It never put's me below the recommended OAL. My OAL's for both 9 and 45 are always longer than stated in the manuals. |
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Quoted:
Quoted:
OAL in the 45 acp is not manual specific it is firearm specific. The handloader must find the OAL that fits-feeds-fires in his or her firearm. After that, start low and work up. After all, if it doesn't fit-feed-fire there is not need to worry about pressure. +1, there it is. I always work my loads up first with OAL to my specific barrel and then charge weight. It never put's me below the recommended OAL. My OAL's for both 9 and 45 are always longer than stated in the manuals. Will they then be restricted to use in your guns only? Or will they be usable in other guns? |
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Quoted:
Quoted:
Quoted:
OAL in the 45 acp is not manual specific it is firearm specific. The handloader must find the OAL that fits-feeds-fires in his or her firearm. After that, start low and work up. After all, if it doesn't fit-feed-fire there is not need to worry about pressure. +1, there it is. I always work my loads up first with OAL to my specific barrel and then charge weight. It never put's me below the recommended OAL. My OAL's for both 9 and 45 are always longer than stated in the manuals. Will they then be restricted to use in your guns only? Or will they be usable in other guns? They will probably load in some and not in others. An example is I load my 115gr FMJ out to 1.163 when others are loading at 1.090. |
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Quoted:
Quoted:
Quoted:
OAL in the 45 acp is not manual specific it is firearm specific. The handloader must find the OAL that fits-feeds-fires in his or her firearm. After that, start low and work up. After all, if it doesn't fit-feed-fire there is not need to worry about pressure. +1, there it is. I always work my loads up first with OAL to my specific barrel and then charge weight. It never put's me below the recommended OAL. My OAL's for both 9 and 45 are always longer than stated in the manuals. Will they then be restricted to use in your guns only? Or will they be usable in other guns? That depends on the firearms. I have worked up so the same loads will fit-feed-fire in four 1911 45acp, 2 10MM and 3 9mm. |
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NEVER go below the minimum OAL. It is called the minimum for a reason. Going below will result in increased pressure, possibly to a dangerous level.
Look at the SAAMI OAL specs. This would be considered a maximum that should work in all manufacturers chambers. You can test your particular chamber with the particular bullet that you are going to reload by handseating the bullet into a fired (not resized) case long. Then push the bullet into the chamber until the case rim seats. Carefully pull the bullet out and measure OAL. This is the OAL that will touch the lands for that bullet in that chamber. Load a little shorter than this, then make sure that it will fit into the magazine. A lot of pistols will feed a longer bullet than will fit into the magazine, so this will be your limiting factor. One note: If you are loading long (near max for your chamber), this OAL is only good for the particualr bullet that you measured this way. If you change bullets, you need to measure again. |
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[ditto .if you shooting in alot of diff guns stick to published load data .NEVER GO SHORTER than min !!quote]Quoted:
NEVER go below the minimum OAL. It is called the minimum for a reason. Going below will result in increased pressure, possibly to a dangerous level. Look at the SAAMI OAL specs. This would be considered a maximum that should work in all manufacturers chambers. You can test your particular chamber with the particular bullet that you are going to reload by handseating the bullet into a fired (not resized) case long. Then push the bullet into the chamber until the case rim seats. Carefully pull the bullet out and measure OAL. This is the OAL that will touch the lands for that bullet in that chamber. Load a little shorter than this, then make sure that it will fit into the magazine. A lot of pistols will feed a longer bullet than will fit into the magazine, so this will be your limiting factor. One note: If you are loading long (near max for your chamber), this OAL is only good for the particualr bullet that you measured this way. If you change bullets, you need to measure again.[/quote] |
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NEVER go below the minimum OAL. It is called the minimum for a reason. Going below will result in increased pressure, possibly to a dangerous level. . What is Min OAL in a 45 acp? For example, what is the Min OAL for a Missouri Bullet 200gr LSWC or their 230gr LRN? How about the 200gr LSWC from S&S Casting, Penn, Zero, Mastercast and Widener's cast bullets? Do these bullets all share the same Mini OAL or are they different as their profiles may differ? Where would I find the Min OAL for these brands of bullets? |
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