6.5-RPM vs 6.5-270 & Improved

[Wild Monkey]

Due to the added costs of Wby Ammo, is it worth it to just build a 6.5-270 instead? / Edit I meant 270 Win as the brass is all over.

 

[Idaho Lefty]

That's what I'd,. "Do" ( 6.5-270 ) as, the .270 WSM Cartridge design is, a "Good" One and there is, Norma Brass available, IF, you Look for, IT !
Keep your Barrel "Cool", tho !
Both the .270 and .300 WSM's have "Survived" , almost 20 Years, because, the Case Design,.. IS,.. "Sweet" !
The 7mm WSM should have, HAD, a Longer Neck, long Action and longer "Throat" and then,.. NO need of, the 7 PRC !
SHORT Powder Column's and 30*- 35* shoulders, are,.. BEST for, accuracy !

 

[Hand Skills]

6.5-280AI will offer a little more capacity than 6.5-270. I hope someone is able to chime in who has measured case capacity on both.

Weatherby sure is proud of their brass...!

 

[elkaholic]

6.5-280AI will offer a little more capacity than 6.5-270. I hope someone is able to chime in who has measured case capacity on both.

Weatherby sure is proud of their brass...!

6.5 Sherman beats them all and uses the same brass.

 

[Hand Skills]

6.5 Sherman beats them all and uses the same brass.

The RPM too?!

 

[Idaho Lefty]

You can put, up to, 70 Grains of Most Powders in, a .270 WSM case,.. How FAST do you want to,.. Burn your Barrel, out ??

 

[elkaholic]

The RPM too?!

I was referring to the 270 based brass. Not sure what the RPM will do but the 6.5 Sherman will run 3250-3300 with a 140 and 26" barrel

 

[Rich Coyle]

WOW! How long does the brass last?

 

[FEENIX]

Due to the added costs of Wby Ammo, is it worth it to just build a 6.5-270 instead?

Stick with the 6.5 RPM and do not let anyone talk you out of it, including myself. IF you are considering a wildcat/non-SAAMI anyways, you might as well stick with it or do 6.5 Gibbs. As @shortgrass noted in a different thread, be careful about "Interdnet" claims.

 

[elkaholic]

WOW! How long does the brass last?

Long enough with good brass and running N570

 

[BEEMAN]

Long enough with good brass and running N570

I agree. My brass was lasting 4-5 firings out of my 6.5 Sherman. I was using nosler 270 brass at the time, running 140 Berger's at 3339 FPS out of a 28" Hart with N570.

 

[elkaholic]

I agree. My brass was lasting 4-5 firings out of my 6.5 Sherman. I was using nosler 270 brass at the time, running 140 Berger's at 3339 FPS out of a 28" Hart with N570.

And Nosler brass isnt all that tough!

 

[7.62 Gunner]

Due to the added costs of Wby Ammo, is it worth it to just build a 6.5-270 instead? / Edit I meant 270 Win as the brass is all over.

With excellent Peterson 280 ai brass available and an easy neck down with off the shelf bushing dies, I'd go 6.5-280ai for sure

 

[BEEMAN]

And Nosler brass isnt all that tough!

Surprised me too!