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Anyone tried Reloader 15.5?

playing with 15.5 in 708 139gr Hornady CX bullet . the unfortunate part there is no load data sooo i making up my own, wildcating . rather not say how much to use
 
I use it in a 7-08 with a 139 grain Barnes LRX. Good consistent 5/8 inch 5 shot groups at 2840 fps. 22 in barrel. using 44.8 grains in Starline brass with a federal lg rifle primer.
2.8 oal. Went all the way up to 46.5 gains and 3050 fps. That load showed mild ejector swipes and flattened primers. Still under 1 in groups. These are compressed loads as this is a bulky powder.
 
It does very well in a 6 Dasher with 105 hybrid at approx. 2900.
 

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I use it in a 7-08 with a 139 grain Barnes LRX. Good consistent 5/8 inch 5 shot groups at 2840 fps. 22 in barrel. using 44.8 grains in Starline brass with a federal lg rifle primer.
2.8 oal. Went all the way up to 46.5 gains and 3050 fps. That load showed mild ejector swipes and flattened primers. Still under 1 in groups. These are compressed loads as this is a bulky powder.
holy crunch! you are putting in a bunch more than me and i am getting crunch setting to 280 COL. my coronagraph says 2830 with 41.5. what i am saying is i question the accuracy of your scale
 
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I use it in a 7-08 with a 139 grain Barnes LRX. Good consistent 5/8 inch 5 shot groups at 2840 fps. 22 in barrel. using 44.8 grains in Starline brass with a federal lg rifle primer.
2.8 oal. Went all the way up to 46.5 gains and 3050 fps. That load showed mild ejector swipes and flattened primers. Still under 1 in groups. These are compressed loads as this is a bulky powder.
This is good to know as I have a 7-08 22" and rl15.5.
 
Here it is March 18,2024 and have not seen Reloader 15.5 since I got 2 pounds when it came out.I started the post September 15,2021 and still have not seen it again.I am afraid to work up a load for it as I will find a sweet load and run out of powder!
Crazy reloading world.
I've seen it in stock recently. I think Bruno's
 
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