Thread: Short barrel 6.5prc vs .270win

I am looking to get a tikka and cut the barrel to around 17 inches and add a suppressor. I am in between 6.5prc and .270win and plan on shooting 130-140gr bullets in either. Max hunting distance probably won’t be over 400 yards. I currently shoot .270 so I have components already but I cannot find much data on short .270s. Does anyone have velocities to share out of either cartridge in a short barrel?

Originally Posted by Akj

I am looking to get a tikka and cut the barrel to around 17 inches and add a suppressor. I am in between 6.5prc and .270win and plan on shooting 130-140gr bullets in either. Max hunting distance probably won’t be over 400 yards. I currently shoot .270 so I have components already but I cannot find much data on short .270s. Does anyone have velocities to share out of either cartridge in a short barrel?

I would stick with the .270 @Ryan songhurst had a short barrel .270 and maybe able to help you.

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Please don't. Not with either of those.

Just get a 308.

Originally Posted by Pommy

Please don't. Not with either of those.

Just get a 308.

Agreed. Either a .308 or 7mm/08 are much better suited to a short barrel rig. The PRC or .270 will just burn a whole lot of extra powder for very little gain. Short barrel rifle are best when matched with a small case capacity in relation to the bore size.

Originally Posted by zeropak

Agreed. Either a .308 or 7mm/08 are much better suited to a short barrel rig. The PRC or .270 will just burn a whole lot of extra powder for very little gain. Short barrel rifle are best when matched with a small case capacity in relation to the bore size.

Do you have data to support this? Not trying to argue. I just haven’t seen much data, but the little I have seen seems promising to me.

Originally Posted by Akj

Do you have data to support this? Not trying to argue. I just haven’t seen much data, but the little I have seen seems promising to me.

try to crunch a few numbers in quickload if you want proof.

you can shorten any caliber, some are just more suitable to do it than others.

Originally Posted by Pommy

Please don't. Not with either of those.

Just get a 308.

I’m open to suggestions. Care to elaborate?

Originally Posted by Akj

I’m open to suggestions. Care to elaborate?

My suggestion is to get a 308.

You're wanting a cartridge that's proven it does well from 16-18" barrels for hunting out to 400m... That's called a 308... Why blow 55-60gr powder down a barrel for an academically small increase in performance and a shit load more noise and less barrel life?

Fwiw, I doubt there is any meaningful difference in efficiency between 270 Win and 6.5 PRC. Tahr gets 2990 with a 130 from a 20" 270. I can get ~3200 with a 130 from a 26" PRC so shortened it would be similar.

I would go with the 6.5prc, short fat cases always do better in a shorter barrel than long skinny cases
Just look at 280 vs 284win

Ive had 20" .270 and 6.5PRC.

270 met expectations, 6.5prc fell short.

Too much fussing around with the PRC - dies, cases etc and performance wasn't startling.

The .270 was so easy to set up and get going. It's quite an efficient cartridge. Mate had an 18" Ruger Lightweight and that was pretty good too. The Duleys use a short barell'd .270 (20" maybe) and I respect their judgement.

Originally Posted by Tahr

Ive had 20" .270 and 6.5PRC.

270 met expectations, 6.5prc fell short.

Too much fussing around with the PRC - dies, cases etc and performance wasn't startling.

The .270 was so easy to set up and get going. It's quite an efficient cartridge. Mate had an 18" Ruger Lightweight and that was pretty good too. The Duleys use a short barell'd .270 (20" maybe) and I respect their judgement.

What kind of velocities did you see out of the .270?

Originally Posted by Akj

What kind of velocities did you see out of the .270?

2990 with 130 grn ballistic tips. W760 powder. Wasn’t maximum. Killed well. Bit messy.
You could use any of half a dozen cases and there will be nothing in it except marginal ballistic differences.
.270 cases and components are easy to get.
Whoops, here comes matron, gotta go….

308

Originally Posted by STC

308

Answering the question you wish he had asked and not the question he actually asked. Classic.

Originally Posted by Tahr

Answering the question you wish he had asked and not the question he actually asked. Classic.

your nurse should give you your meds and bring you back to bed sir.