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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
AR-15 24 inch best powder for 75 match bullets
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<blockquote data-quote="littlegunny22" data-source="post: 1100499" data-attributes="member: 91190"><p>Not sure about the 75 grain bullets but I had a 24" 1-9 twist that I developed an awesome recipe for. Bullets were 55 grain Sierra BTHP's with 25.5 grains of Win748 giving me avg. velocity of 2928 and a standard deviation of 7 fps. If you want more velocity I was able to get avg. vel. of 3219 and SD of 12 fps with 27.5 grains of Win748 and everything else being the same. On seating depth I use a comparator and I seated the ogive about 5 thousands off the lands. Another powder I have had good results with loading for different AR's is Benchmark. Since you have a chronograph it shouldn't take too long to come up with a recipe that your gun shoots well. </p><p></p><p>50 grains is probably a little light for what you want too but if you or anyone else wants a good Benchmark starting point load to work with (I don't mean minimum load) always refer to a good manual and watch for signs of high pressure but 26 grains of Benchmark gave me avg. gel of 3318 with a SD of 10 fps. </p><p></p><p>Good luck and have fun, not sure if this helps you but it should give you a couple more powder options to try that I didn't see mentioned. And it might help a few guys that shoot the 50-55's.</p></blockquote><p></p>
[QUOTE="littlegunny22, post: 1100499, member: 91190"] Not sure about the 75 grain bullets but I had a 24" 1-9 twist that I developed an awesome recipe for. Bullets were 55 grain Sierra BTHP's with 25.5 grains of Win748 giving me avg. velocity of 2928 and a standard deviation of 7 fps. If you want more velocity I was able to get avg. vel. of 3219 and SD of 12 fps with 27.5 grains of Win748 and everything else being the same. On seating depth I use a comparator and I seated the ogive about 5 thousands off the lands. Another powder I have had good results with loading for different AR's is Benchmark. Since you have a chronograph it shouldn't take too long to come up with a recipe that your gun shoots well. 50 grains is probably a little light for what you want too but if you or anyone else wants a good Benchmark starting point load to work with (I don't mean minimum load) always refer to a good manual and watch for signs of high pressure but 26 grains of Benchmark gave me avg. gel of 3318 with a SD of 10 fps. Good luck and have fun, not sure if this helps you but it should give you a couple more powder options to try that I didn't see mentioned. And it might help a few guys that shoot the 50-55's. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
AR-15 24 inch best powder for 75 match bullets
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