7 mm rem mag and ramshot grand

[JamesWilson5]

Got a winchester xpr 7 mm rem mag with factory 26 inch tube. I was doing some chronograph reading using 150 accubond I ran loads till I hit pressure backed off 1 grain no pressure but my velocity was was extreme 3376 fps . Has anyone else had this kind of velocity

 

[Chesterrose79]

Nope. 3250 is all I could get with 150gr TTSX and h1000

 

[JamesWilson5]

My 7 weatherby is only 3300fps with factory ammo it blew my mind how much velocity it gained

 

[VICOMB]

Let us know what kind of grouping you get once you find your load. I'm using rl-26 but don't know how long it will last and looking for a replacement. Shooting 160 gr accubonds at 3100 under 1/2".

 

[jbur13]

I've seen that kind of big jump in speed with bad carbon ring fouling. Have you bore scoped it?

 

[slick Nick]

What is the barrel life on those scorchers that is moving in any language.

 

[AussieWriter]

Let us know what kind of grouping you get once you find your load. I'm using rl-26 but don't know how long it will last and looking for a replacement. Shooting 160 gr accubonds at 3100 under 1/2".

Retumbo snd Rel 22 will get you close to that with a 26" barrel once you run out of R26.

 

[HRM Johnny]

Please keep us updated.

 

[Tommy T]

Got a winchester xpr 7 mm rem mag with factory 26 inch tube. I was doing some chronograph reading using 150 accubond I ran loads till I hit pressure backed off 1 grain no pressure but my velocity was was extreme 3376 fps . Has anyone else had this kind of velocity

What kind of powder are you using? I've had the same results using N560 powder

 

[AussieWriter]

What kind of powder are you using? I've had the same results using N560 powder

It was stated in the thread heading...

 

[.300 Dakota]

I've only used it in a 243 so far, and have good velocity, BUT I can't get enough of it in the case to reach pressure/max load using Hornady 103gr ELD-Xs. That said, what I can stuff in there gets me over 3000. It lists as about the same burn rate as H1000, but yet you generally use a few more grains of it for comparable loads. Scratching my head on that one. It's not the most dense of powders. That's what makes RL26 so good - SUPER dense!

 

[VinceMule]

Mr. Wilson, not to find out what velocity will give you accuracy?

I would not be surprised to see that you are at least 3250 fps at the accuracy node.