6.5mm PRC

[Swamp Rat]

Any thoughts on this? I like the (advertised) performance. Not a 6.5 SAUM, but it's fast enough for my purposes and offers a little more swat "out dere" than Creedmoor. I also like it has no belt.

It's advertising about 2970 fps with the 143 grain ELD-X out of a 24" barrel - wonder how much it would drop with a 22" tube. This may be the route I take (if for no other reason that it's just esoteric enough...) - It's based on the 300 RCM cartridge case.

https://www.americanhunter.org/artic...y-65-prc-load/

[Griffin]

I head researched it a bunch and it is pointless to me. 6.5 SAUM pushes the same projectiles 150fps faster with the same
Or better barrel life.

[Swamp Rat]

Curious - how would the barrel life be better? Lower chamber pressure?

[Griffin]

Yes. 6.5 and 7 Saum are extremely efficient case designs

[Swamp Rat]

You have any velocity data from 22" or so barrels with the SAUM?

[Griffin]

I do. What projectiles you looking to shoot?

[Bad Habit]

BOOLITS

[bigtimeduckhunter]

BOOLITS

The pointed ones

[Swamp Rat]

Accubond 130, 140. Maybe LR Accubond or Hornady ELD-X. Whatever it likes best.

[Griffin]

I get 3125 with 140 VLDs but that's leaning on it kinda heavy
I get 3200 with 130 VLDs without pressing it and that's not leaning on it hard at all

[Griffin]

Sorry that's with a 22.75" barrel if you wanna get technical. Barrel will be forsale here soon. Swapping it out for a 22" proof sendero light chambered in 6.5 saum and throated for 147 ELDXs. And they should run close to 3125

[b-stick]

I still don’t understand this cartridge. It’s kinda a lost cartridge IMO.

The same results can be had with a 260 rem, (pushed hard), 260 AI, and hell even a hard driven 6.5 creedmoor.

If you are looking for those speeds and not wanting to push a cartridge than I would chose the 6.5 SAUM.

[Tha Dick]

The pointed ones

Just the Tip.jpg

[FLS]

I can’t get over the barrel life claims for all the souped up 6.5s. I got about 2K out of my Kreiger running a mild 140 grain Creedmoor load. It takes more pressure to push a bullet faster and pressure equals heat which equals throat wear. If a 6.5 x 284 is a barrel burner and a 6.5 WSM is even worse, what magic fairy dust are they loading those SAUM cases with. Every other 6.5 round pushing 140 grain bullets at 3000 FPS has a short barrel life.

[Strick9]

22" 7 Saum , CCI BR2, RP and norma brass seen below. Everyone of these is a true .25 moa load out of this barrel and exhibits the only reason I haven't gone 6.5.. it just can't keep up with the 7 no matter how you want to flavor it as to ft/lb and weight offerings.

The newer heavy grain offerings applied into a a 6.5 Hillbilly will however kill and smoke about half my data , forcing me to have to lean 7 Rum and 195s soon to piss on the 6.5 if they keep pouring the juice to that skinny little thing. I am more apt to go 6BR if slender suited.

140 Accubond and TTSX = 2950 very light pressure signs- H4831 SC

^same barrel =168s Berg Classic 2850 no pressure signs. H4831 SC

^ same barrel =162 EldM 2750 no pressure signs , still working up RL26

^ same barrel 168 LRAB 2700 no pressure signs H4350

^ same barrel 145 LRX 2940 slight pressure signs. H4831 SC

[Griffin]

I can’t get over the barrel life claims for all the souped up 6.5s. I got about 2K out of my Kreiger running a mild 140 grain Creedmoor load. It takes more pressure to push a bullet faster and pressure equals heat which equals throat wear. If a 6.5 x 284 is a barrel burner and a 6.5 WSM is even worse, what magic fairy dust are they loading those SAUM cases with. Every other 6.5 round pushing 140 grain bullets at 3000 FPS has a short barrel life.

a lot more goes into it than that. Pressure and barrel life are not directly related in every case

[Strick9]

Crisco life.

[CWPINST]

a lot more goes into it than that. Pressure and barrel life are not directly related in every case

Wonder what the shoulder angle difference is between the SAUM and the 6.5x.284? I believe that P.O. Ackley said that a sharp shoulder angle combined with a long case neck would reduce throat erosion. However, I would imagine that burning a lot of powder at high pressure through the 6.5 hole would still be pretty hard on barrel life.

[Strick9]

30 saum vs 35 on x 284 if memory serves.

[Swamp Rat]

As for shoulder angle and throat life, I know was starting to get erosion out of a 280 Ackley back in the day with less than 700 rounds through it. I DID load it warm enough that my primer pockets were worthless after 3 loadings. As I recall, I was pushing a 140 grain Ballistic Tip at about 3150.

I'm looking at a lot of options here - the barrel Griffin mentions (PROOF sender light) is what i'm leaning towards. Creedmoor, 260, 260 AI, and 7-08 are on the table. I'm keeping an open mind.