Optimal case to push 147 ELD?

[shoot4fun]

I would bet that a 2000 round count on a PRC would be possible only using a mild load. The case capacity is almost identical to the 6.5-284. Neck length and shoulder angle differences should not make a dramatic difference. By the way, the SAAMI specs call for a max pressure of 65,000psi. Run them like that and barrel will go down hill rapidly.
Bill

Sorry but I don't see that extra 6 grains Orr so of powder capacity in the PRC making your "almost identical" comparison valid.
I am currently shooting 140 ELD-M with 58/5 Retumbo in the PRC. It is less than Hodgdon's suggested max by about 1 grain but is making 3028 FPS with very mild recoil. My barrel is an 8 twist Kreiger and is 28" in length. My shooting buddy is using the 147 ELD-M ahead of H1000 in his 26" barrel. Recoil is quite a bit more and our downrange dial-ups are virtually the same.
Also, I really do thing the 6.5-284 having a short neck does have quite an effect on throat life. I've shot enough of that caliber to know it is a barrel eater.

 

[wboggs]

Sorry but I don't see that extra 6 grains Orr so of powder capacity in the PRC making your "almost identical" comparison valid.
I am currently shooting 140 ELD-M with 58/5 Retumbo in the PRC. It is less than Hodgdon's suggested max by about 1 grain but is making 3028 FPS with very mild recoil. My barrel is an 8 twist Kreiger and is 28" in length. My shooting buddy is using the 147 ELD-M ahead of H1000 in his 26" barrel. Recoil is quite a bit more and our downrange dial-ups are virtually the same.
Also, I really do thing the 6.5-284 having a short neck does have quite an effect on throat life. I've shot enough of that caliber to know it is a barrel eater.

Sorry but I don't see that extra 6 grains Orr so of powder capacity in the PRC making your "almost identical" comparison valid.
I am currently shooting 140 ELD-M with 58/5 Retumbo in the PRC. It is less than Hodgdon's suggested max by about 1 grain but is making 3028 FPS with very mild recoil. My barrel is an 8 twist Kreiger and is 28" in length. My shooting buddy is using the 147 ELD-M ahead of H1000 in his 26" barrel. Recoil is quite a bit more and our downrange dial-ups are virtually the same.
Also, I really do thing the 6.5-284 having a short neck does have quite an effect on throat life. I've shot enough of that caliber to know it is a barrel eater.

The measured case capacity on my 6.5 prc cases is 68.6. I was under the impression that the 6.5-284 is 68.3 but
I have no cases to measure. I defer to your experience with the neck/shoulder in the 6.5-284 as I have none. The 6.5 prc is too new to determine barrel life. I know one shooter who has about 500 rounds on his barrel and he says it still looks good.I am.using h1000 and running below max at 3050-3075. and am looking for a good accurate load around 3000, all with 150smks.
,
Bill

 

[boltfluter]

Sorry but I don't see that extra 6 grains Orr so of powder capacity in the PRC making your "almost identical" comparison valid.
I am currently shooting 140 ELD-M with 58/5 Retumbo in the PRC. It is less than Hodgdon's suggested max by about 1 grain but is making 3028 FPS with very mild recoil. My barrel is an 8 twist Kreiger and is 28" in length. My shooting buddy is using the 147 ELD-M ahead of H1000 in his 26" barrel. Recoil is quite a bit more and our downrange dial-ups are virtually the same.
Also, I really do thing the 6.5-284 having a short neck does have quite an effect on throat life. I've shot enough of that caliber to know it is a barrel eater.

shoot4fun,

What do you believe is causing the difference in perceived recoil? Just curious as I am in the process of building a 6.5 SAUM and will be running H1000 powder. Thanks for any insight you care to share.

Paul

 

[shoot4fun]

shoot4fun,

What do you believe is causing the difference in perceived recoil? Just curious as I am in the process of building a 6.5 SAUM and will be running H1000 powder. Thanks for any insight you care to share.

Paul,
Not being flip here but I honestly am not smart enough to pin it down. All I know is that I can usually call my own hits with mine but his pushes back a lot and always moves off the target. I've shot them both and it is not a subjective claim. There truly is a big difference.
There are differences in the two such as my stock is a KMW and his is Manners T5a, mine is an Area 419 brake and his is from APA and his is 26" where mine is 28". Maybe I'll load some 147's with H1000 to duplicate his and try them in my rifle to see how much difference is gun.

 

[boltfluter]

Thanks for the info. I would be curious to hear your results of the test when you have them.

Paul

 

[seymour fish]

For fun use and ease of operations I recommend 6.5-06 if you want Lapua Brass, 6.5-270 if you want to be able to pull and switch bullets for hunting. The sky is the limit if you want to improve it later. You will never have a shortage of Brass.

Rum nailed it. Make it a 6.5-270AI. Superb accuracy and barrel life, as long as you don’t get it hot, is acceptable. N-165 is the coolest burning powder and a perfect match. Keep the PSI at 58 K and cruise with excellent brass life. Not for PRS but perfect for banging steel and long range hunting. Maybe a 1:7 3/4 twist for the 147-150 class

 

[sbhooper]

I am not a long-range target shooter, so I do not split hairs, but my 24-inch Creed pushes the 147 easily to 2745 fps with Re 26 and it is incredibly accurate-even with me shooting it! It looks to me like that bullet gets to the range that you are wanting with no problem. The Creed doesn't burn a lot of powder, is incredibly accurate and you can shoot it all day with no adverse effects on your shoulder. Oh yeah, and do it in a short action! For a long action, I would have to vote for a 6.5-06 etc.

 

[hambone1971]

My Savage 12FV 6.5 Creedmoor has more than 2650 round down it now and it still shoots 1/2 moa. Almost all 147 ELD-M bullets and RL-16. Was shooting out to 1500 yards last week getting my dope. That makes 1000 look to easy now. Great cartridge.

 

[sbhooper]

My Savage 12FV 6.5 Creedmoor has more than 2650 round down it now and it still shoots 1/2 moa. Almost all 147 ELD-M bullets and RL-16. Was shooting out to 1500 yards last week getting my dope. That makes 1000 look to easy now. Great cartridge.

What speed are you getting? That is a lot of rounds for a "barrel burner" 6.5!

 

[hambone1971]

What speed are you getting? That is a lot of rounds for a "barrel burner" 6.5!

I haven't checked the speed in a long time, but the load was and still is 41.85 g of RL16 , I checked when I got the node info, OCW testing and it was around 2720 fps, I don't know what it is right now with so many rounds. I should check. I can tell you this, the rifling has moved out about .125 from new. It seems to move forward .050 for each 1000 rounds. I haven't chased the lands/rifling and it still shoots well. I had it out today shooting 600 yards and it was easy 1/2 MOA in no wind conditions. When does a barrel go south, I don't know, I would of thought by now. Also I've checked the node and it still likes 41.8 to 41.9 g RL16. Weird things, I would of thought it would of shifted up or down a bit. HB

 

[hambone1971]

I am not a long-range target shooter, so I do not split hairs, but my 24-inch Creed pushes the 147 easily to 2745 fps with Re 26 and it is incredibly accurate-even with me shooting it! It looks to me like that bullet gets to the range that you are wanting with no problem. The Creed doesn't burn a lot of powder, is incredibly accurate and you can shoot it all day with no adverse effects on your shoulder. Oh yeah, and do it in a short action! For a long action, I would have to vote for a 6.5-06 etc.

How many g of RL26 are you loading for 2745? I hear a few others like it, I've never tried it, may have to. They show it listed for 243 and 6mm so it must be ok for CM. I always thought it was for larger magnums till you guys brought it up.

 

[FrankG]

6.5 CM on my rifle. Barrel is basically new. 23” finish length. 41.5gr. Of Varget and I’m pushing 147 ELD-M and 150SMK an honest 2700fps. Super accurate sub 1/2moa with no issues. Box Hornady ammo with 140Amax will give me 1/2 to 5/8moa and the box ammo is giving me right around 2700fps as well.

Barrel life.....most guys that I talk to are getting 2000-3000 rounds.

Later, Frank
Bartlein Barrels

 

[sbhooper]

How many g of RL26 are you loading for 2745? I hear a few others like it, I've never tried it, may have to. They show it listed for 243 and 6mm so it must be ok for CM. I always thought it was for larger magnums till you guys brought it up.

46 grains of Re 26. Really accurate and the 147 hammers deer. It is great in a number of different calibers. I wish Alliant did more with it. The Creed and .260 love it with about anything 129 and up. I don't shoot lighter than that.

 

[furmaster]

26nosler!!!! Just enough barrel life to build a load. But probably fun

 

[Bc'z]

How many g of RL26 are you loading for 2745? I hear a few others like it, I've never tried it, may have to. They show it listed for 243 and 6mm so it must be ok for CM. I always thought it was for larger magnums till you guys brought it up.

Factory 22" barrel
Norma brass
47gr Rl26
Cci200
143eldx 2720 fps

Hornady brass
47.2gr Rl26
Cci200
140 berger vld 2740 fps

 

[hambone1971]

Thanks for the replies on my question on RL26. Now if I could just find some of it.
HB

 

[Bc'z]

Thanks for the replies on my question on RL26. Now if I could just find some of it.
HB

Go to the 6ppc 243 board look for
Secret Carolina load, #40fan and a few other members have done some killer load work using h4831sc, imr 4831
Pretty impressive velocities with the imr

 

[hambone1971]

Ok, thanks for the head up. HB

Go to the 6ppc 243 board look for
Secret Carolina load, #40fan and a few other members have done some killer load work using h4831sc, imr 4831
Pretty impressive velocities with the imr

 

[Bc'z]

Ok, thanks for the head up. HB

I'm shootin the cackalacky rt now 44gr @ 2.835 over all maglength 3 touching.
4 more rounds in ice test to shoot moving up in .3 increments I'll post target in other thread later.
Brett

 

[furmaster]

I also have been thinkin about something very similar, that 150g SMK has my interest. Without going magnum..(prc, or saum) I think it would be fun to do a 7.5 twist 6.5x55 swede.