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Heat treating shot success
So I learned about heat treating lead shot that contains around 6% antimony from some coyote hunters for getting less deformation from setback and through the chokes. Most of them seem to be using BPI super buck which I have a bottle of in T shot I read this is normally around 12 bhn and heat treating it can raise it to around 22 bhn without making it brittle. Now I dont have a scientific method to test this besides the tried and trued channel locks. Heres what a untreated pellet looks like vs one I baked at 420F for 45 mins and quenching. You can barely squeeze them with the channel locks, now even the untreated ones still take quite a bit of force to flatten so they are pretty hard. The shot turns a light dull grey after baking compared to it new. I think this is perhaps some sort of lube or something BPI puts on it because they feel what I would describe as super dry after baking and before they are really slick. I plan to coat them in some mica as I have been doing to add some lubrication back to them. Now I tried this also with BPI nickel plated shot and it does seem harder but not as much as the unplated shot the color didnt change any with the plated shot. I plan to run this in my 8 ga since its cylinder choked not sure what effects it would have in a fixed choke but I figure the best way to test that would be to find a cheap single shot 12 ga with a damascus barrel in the future.
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Milton, you'll have your Ph.D. in shotology before you know it.:bowdown: I assume you buffer those loads you're cooking up? And your shot cup provides some protection to your barrels?
Anxious to see what kind of patterns those heat treated pellets give. Keep us posted. |
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It's been years since I loaded turkey loads with Grex buffering, but my tests showed a 25% improvement in pattern density with 3% antimony shot
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Ive seen a wide variety of buckshot coatings a cheap popular one is graphite mixed with Lee Alox. I suppose if you wanted to squeeze the absolute most performance out of lead shot you could heat treat it then coat it or powder coat it and use it in a buffered load. In theory that should give the best results but I havnt seen anyone try all those together probably because it would be time consuming. |
Milton you have above what I do with reloading very interesting...I wait for youre pattern tests...Charlie....
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Charlie im trying to decide if I want to wait for my nitro cards to get here or just go shoot as I have been doing. Charlie if you bit down on one of these in some game you would be needing a new tooth haha. Whats been limiting me ability to do much pattern testing is I havnt been able to find any cardboard or large poster board locally to shoot, we're not really suppose to use shotguns at the range which is ran by the WMA seems a bit irresponsible on their part though.
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paper plates are good cheap targets and my favorite the doctor pepper can....I think some one said that freezer paper made good cheap shooting material....charlie
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