PDA

View Full Version : load magic



trixter
02-10-2015, 07:20 PM
Shooting a S&W M&P 15 sport, and according to Lyman's book, it suggests starting with 6gr of Unique, with a max load of 9gr for a 55gr boolit similar to the lee Bator. What I would like to know is; will this cycle my gun? Please don't help me out with other powders, because Unique is what I have. I just need to know if it will work with Unique and how many grains of powder.

Thanks

blikseme300
02-10-2015, 11:57 PM
I'm sure the loading data you have is for a bolt gun for which the combination is probably good. Gas cycled guns have other requirement so most likely won't work as Unique is a very fast powder and won't generate enough gas pressure to cycle the action. I use H4198 and Reloder7 for cast in the AR-15 platform.

bhn22
02-11-2015, 12:05 PM
I agree. Unique won't produce enough gas pressure to cycle the action. Here's some useful information on loading cast in .223 for ARs:

http://www.hensleygibbs.com/edharris/articles/Cast%20In%20an%20AR.htm

Harter66
02-11-2015, 01:10 PM
3rd on the no cycle.