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Old 01-29-2012, 10:00 AM   #1
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Paul Harm
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Pete, just my personal preference, 1265fps is unnecessary. Maybe that load is necessary for a clean burn. I'd try about 1.5 to 2 grains less - you'd have a little less FPS but would also lower the pressure. A lower velocity would mean less recoil. Shot that starts out faster slows down quicker so at any distance you haven't really gained a whole lot. A lower pressure also means less shot defromation. That equals better patterns. I have a IMR manual in front of me -in one load they have from 14.5 to 18.5 grs to give 1150 to 1325 FPS. Pressures go from 5,700 to 8,300. Good luck - Paul
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Old 01-29-2012, 06:12 PM   #2
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Quote:
Originally Posted by Paul Harm View Post
Pete, just my personal preference, 1265fps is unnecessary. Maybe that load is necessary for a clean burn. I'd try about 1.5 to 2 grains less - you'd have a little less FPS but would also lower the pressure. A lower velocity would mean less recoil. Shot that starts out faster slows down quicker so at any distance you haven't really gained a whole lot. A lower pressure also means less shot defromation. That equals better patterns. I have a IMR manual in front of me -in one load they have from 14.5 to 18.5 grs to give 1150 to 1325 FPS. Pressures go from 5,700 to 8,300. Good luck - Paul
I agree with you Paul 100% on the speed being unneeded. I already went ahead and loaded some shells with 29 gr of Unique in the Federal hull with Fio primer. Had a good report, recoil felt normal, looked to be burning clean and killed a couple of crows.

What load/gauge and powder are you looking at in regard to that 14.5 to 18.5grains?
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Old 01-29-2012, 08:05 PM   #3
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If you look at the fine print on that load, you will see that they tell you to use 6, yes, six, .135 card wads to fill the shell. In addition, it is an unbalanced load if you reduce the powder. Unique is not the powder to use in a 1 1/4 ounce ten gauge load if you want sensible velocities. You don't reduce the powder charge in a 7500 psi load to reduce velocity. You go to a faster powder in order to reduce velocity and at the same time keep pressures up. If you take this load and reduce the powder charge, the pressure will go through the floor and you will get squibs and bloopers, especially in cold weather. Read the "burn rate chart" to decide what powder you should or should not use. If you need to reduce the velocity in this 1265 fps Unique load, you should not reduce the powder charge, you should go to a faster powder, like Green Dot if you choose to use an Alliant product.
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