Powder other than H4350 for 20" 6.5 Creed?

Nov 10, 2009
270
108
43
Mississippi
#1
Putting together a 20" 6.5 creed gas gun to hunt with, probably going to use a bullet in the 130 gr range. I have a 24" 6.5 creed that I use just to target shoot with. H4350 and 140 eld-m's have been great. Just wondering if there is any other powder I should try besides H4350? Or just stick with it and go.
 

Huskydriver

Sergeant of the Hide
Apr 17, 2018
141
81
28
SLC, Utah
#3
H4831sc all the way. I can push 140 gr bullets to 2950 fps with a compressed load of 47 grains in hornady brass in my 26" barrel and you still get temp stability. Sierra's loading book is the only one i know of that calls out a load for H4831sc but it works great! 46.5 grains is over max but is also a safe and accurate load in my rifle 2875ish if I remember right.

https://sierrabulletsblog.com/2017/01/09/sierra-bullets-6-5-creedmoor-load-data/
 
Jun 1, 2013
204
28
28
Minnesota
#4
I've only run a couple of ladders though seemed to get nice velocities out of my 22" with Hybrid 100-V: 42.4gr @ 2726fps was best, 43.4 @ 2804fps was as far as I went. 140gr ELD-M in Nosler brass + CCI BR-2.
 
Likes: jda2631
Feb 25, 2013
156
3
18
South Illinois
#6
In my 18" 6.5 creed RL-17 was the ticket. Shooting 130 ELD-M's and started with H-4350, ran into pressure at 2530 fps,. Best groups were around 1 MOA. Did a OCW with RL-17, watched it go from 1.25 5-shot groups to the low .4's and velocity is 2730 fps. Still haven't finalized the load yet as SD's are in the high teens. will try a couple different primers to see if I can lower the SD.
 
Likes: jda2631

CJS-6.5

Miss General Lee
Sep 15, 2017
294
64
28
#7
Imr4350 is usually a bit faster. I'm a big fan of packing cases full of 4831sc too. Rl17 works for lighter bullets. I don't have luck with varget and the tweener calibers like 6.5 and .277
 
Likes: jda2631
Nov 10, 2009
270
108
43
Mississippi
#10
I see that RL16 is temp stable, what about RL17 though? I'm not real familiar with Alliant powders. I live in MS, and do a lot of shooting in the warmer months so temp stability is a major plus. I'll be shooting in 100 degree weather down to 20 degree.
 

supercorndogs

Professor Dickweed
Feb 17, 2014
2,689
752
113
#11
my experience was the same as corndogs, need a longer tube for H4831sc.
My 26" loves it. 23" I ended up dumping powder out of the suppressor. I wish I had QL to see what the burn percentage is in a 26". In 23" it was around 95%. So I was dumping about 2.4g of powder into my can every shot. In mine it must have burned in the can and not built up much. It made it hot super fast. I thought it was just the short barrel at first{LOL 23 short}, but I switched to 123s and RL15, and now 140s and h4350 and it it doesn't heat up the can like that with either.
 
Likes: jda2631
Apr 18, 2014
919
75
28
Colorado
#15
I bought some Reloder 16 when it was first introduced and found it to be more than acceptable to H4350. Once I tested its temp stability, I was convinced! I sold off 30 some odd pounds of H4350 and replaced it all with Reloder 16.
 
Last edited:
Apr 18, 2014
919
75
28
Colorado
#21
39.36 grains of Reloder 16, Alpha brass, CCI BR2 primers, 140 ELDM seated at 0.020" with 0.002" neck tension gives me 2814 FPS out of my 26" DTA barrel (Benchmark, if I remember correctly) with a SilencerTech suppressor
 
Feb 10, 2017
3,888
878
113
Central TX
#24
I am new to this reloading process, but does no one use IMR4064 ?
Not really in a 6.5 creed, its a shade fast like varget is and its a shade temperature sensitive.

Might be alright for plinking and lighter bullets where staying exactly in tune year round is a lesser concern but I dont think it is the best suited for match ammo when there are better options.
 
Feb 10, 2017
3,888
878
113
Central TX
#26
They use it in 308 FGMM don't they?
I guess, Ive heard varget 4064 and rl15 all mentioned over the years. 308 is a bigger bore which requires a faster powder to stay in the ideal pressure zones and mainly for the lighter bullets there as well. They use 4064 in a lot of stuff. I used it at one time in my 3006 with 150s because thats what the old timers did but I get more speed easier with h4350 now.

The larger the bore, the more volume is created compared to a smaller bore as the bullet moves down the barrel. To fill that additional bore volume at the same rate to maintain velocity you need a faster powder.
 
Last edited:

supercorndogs

Professor Dickweed
Feb 17, 2014
2,689
752
113
#27
Yes which is a bigger bore which requires a faster powder to stay in the ideal pressure zones and mainly for the lighter bullets there as well. They use 4064 in a lot of stuff. I used it at one time in my 3006 with 150s because thats what the old timers did but I get more speed easier with h4350 now.

The larger the bore, the more volume is created compared to a smaller bore as the bullet moves down the barrel. To fill that additional space at the same rate you need a faster powder.
You mean it might be OK for plinking and light bullets but not match ammo in the 6.5 creed specifically, I assume from your response.
 

want to be

New Hide Member
Aug 3, 2018
5
0
1
#31
Goshs, Did not mean to start a war. IMR 4064 is about the only powder that is around locally . So that what I starter with for m 6.5 CM and works fair out to 500 yds. But thanks for the help, I am looking for some 4350 but not much luck.
 

ken4570tc in WY

Sergeant of the Hide
Aug 30, 2018
158
48
28
63
Wheatland, Wyoming
#36
This is a paper that goes over is a bit http://kwk.us/powders.html

I cant find the other paper that Im really looking over but the one above goes into the sectional density and expansion ration of the powder and the bore etc.
Nice work with the OP on this thread! I'm in a similar situation getting ready to do load development for my .243 RPR. I do have Quickload and have been doing considerable research both online and from the many manuals I possess. I did save the link to that paper you referenced and I'll review it sometime next week.
 
Feb 10, 2017
3,888
878
113
Central TX
#37
Would it be safe to say that 4350 would be the best place to start with loading for RPR 6.5 CM with Sierra 120 gr. I also load for 223 RPR with Sierra 69 gr.? I can sure use the help, Thanks
H4350 is a really hard powder to beat in the creed case but with the light bullet in the creed and the fairly heavy bullet in 223 I think varget would do well also and you could use the varget in your 223 as well. So if sharing is attractive to you then think about it, if not 4350 will do pretty much whatever you want it to in the creed.

That said, I too question along with jda2631, why a 120 gr bullet? If you are varmint hunting then ok but otherwise youre losing out on a bunch of the ballistic coefficient that makes the 6.5 so appealing. The 6.5 grendel shines with the 120 classes just because it doesnt have enough space for powder to push the heavies accordingly, creed doesnt have that issue and could take the performance up a notch.
 
Last edited:
Aug 3, 2018
5
0
1
#38
Reason for the 120 gr. is that not knowing at the start I purchased 500 of the 120, for that was what the 60 Hornady that I go for the brass was. I have just purchased 100 new Norma cases. I will move up to 140's soon. As 7980 had said that varget works well for the 223 and other have said that varget and IMR 4064 are close, so could I stay with the 4064 for it is always on the shelf.
 
Jul 10, 2007
484
4
18
ABQ, NM
#39
I used imr 4064 a lot in 6.5 CM, work quite well, and accuracy is there. Varget is my top pick since it is more temp stable. I use 139 Lapua with 37.3, shown as max in my sierra manual. Give it a try, just might surprise you.
 
Top Bottom