milsurpguy
member
- Joined
- Feb 12, 2021
- Messages
- 549
Because why not.
223 and 556 are going to be supersonic not much I can do about that.
I might try a faster powder to reduce muzzel flash and blast.
It would be more economical too.
My first guess is use something like H322, but that's only a little faster than what I normally use blc-2, 748, AA2520, ect.
But I do have some RE7, the book data stops at about 52gr alliant has more data for heavier bullets.
It looks like all the book data I can find for RE7 tops out at about 20 to 21gr for all bullet weights 40 to 52gr. Then continues to top out at about 20 gr for heavier bullets too. Seems it burns so fast, inside the case hits 55,000psi before the bullet can barely move. These loads appear to cycle DI guns. It should make about 30% less gas volume for the silencer to quiet down and I would expect very little muzzel flash from such a low volume of fast burning powder, not really necessary, but I'll take it.
I bet it would reduce barrel and silencer heating too.
Velocity would be down about 15% off top preforing loads, muzzel energy down about 25%. It should still mow down coyotes pretty well.
Anyone load 223 or 5.56 with RE7?
223 and 556 are going to be supersonic not much I can do about that.
I might try a faster powder to reduce muzzel flash and blast.
It would be more economical too.
My first guess is use something like H322, but that's only a little faster than what I normally use blc-2, 748, AA2520, ect.
But I do have some RE7, the book data stops at about 52gr alliant has more data for heavier bullets.
It looks like all the book data I can find for RE7 tops out at about 20 to 21gr for all bullet weights 40 to 52gr. Then continues to top out at about 20 gr for heavier bullets too. Seems it burns so fast, inside the case hits 55,000psi before the bullet can barely move. These loads appear to cycle DI guns. It should make about 30% less gas volume for the silencer to quiet down and I would expect very little muzzel flash from such a low volume of fast burning powder, not really necessary, but I'll take it.
I bet it would reduce barrel and silencer heating too.
Velocity would be down about 15% off top preforing loads, muzzel energy down about 25%. It should still mow down coyotes pretty well.
Anyone load 223 or 5.56 with RE7?