6.5-300WSM

[Paper Boy]

Anyone have any experience with this round? I have a Savage striker in 300WSM that I am debating pulling the action from and building one with. I have found dies and sourced a barrel and reamer so I can make it happen. I always like 6.5 projectiles and its supposed to be very accurate.

[buffybuster]

If you're going to run it hard (140's @ 3200fps+) then barrel life is going to be quite short. If you don't then what's the point.

[LynnJr]

With RE25 and a 139 grain bullet you can get 3450 fps with a long barrel and very good accuracy.
Start at 64 grains and work up.
The WSM holds about 8 grains more water than a similar SAUM.

[Paper Boy]

Ya I am not worried about the barrel. Buying the reamer and expecting to replace them decently often....

Thanks for the info LJ

[ar15barrels]

Another one like that is the 6.5 4s that Gap has been campaigning for a while.

[diver160651]

6.5-300WSM

If you're going to run it hard (140's @ 3200fps+) then barrel life is going to be quite short. If you don't then what's the point.

Actual, these have been making a splash at matches like the Gap Grind an Sniper Hide Cup. Barrel life is said to be very good with 140's running 3150ish.. Making them a great low recoiling slippery round with good energy on target so hit signatures are easily spotted.

Not that I need more darn calibers, but I am also interested in this.. Op keep us posted.. Forming the brass seems like a pita and some matches limit speed to 3,000 or 3,100 fps to minimize plate damage.




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[ar15barrels]

some matches limit speed to 3,000 or 3,100 fps to minimize plate damage.

Matches have been pushing the velocity limits to 3150 and 3200 which is exactly WHY we see cartridges/bullets chosen to get RIGHT up to the limits to shoot in the PRS matches...

[LynnJr]

If your limiting your velocity don't go 6.5-300WSM. When you load a gun down the powder burns dirtier and fouls your barrel more.

[diver160651]

6.5-300WSM

Matches have been pushing the velocity limits to 3150 and 3200 which is exactly WHY we see cartridges/bullets chosen to get RIGHT up to the limits to shoot in the PRS matches...

Not at matches follow PRS' rules of random chrono'd MAX of 3150fps. Regardless of why that particular series choose that cap, the PRS rules don't apply to all matches that use Steel. Some of the CB matches like the Oregon Sniper Challenge limit velocity to 2750 (of course some of that is caliber restricted anyway) and one CB match recently dropped from 3200 to 3000 do to plate damage.

If someone is going with a caliber that is capable of very fast speeds and wants to use it to compete, then they should know there are often limits if on steel including the PRS or types like Whittington's CB match's fairly generous 3200fps, that the cartridge can surpass.


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[Paper Boy]

I did not know they limited velocity in some matches...

As for brass forming I have found some information that necking down the 270WSM works much better as its closer to the 6.5 and its the same case essentially.

[ar15barrels]

As for brass forming I have found some information that necking down the 270WSM works much better as its closer to the 6.5 and its the same case essentially.

270, 300 and 325 wsm all share the same case body and shoulder (headspace gauge).
The 7mm wsm is different.
It would definitely be easier to neck down 270 wsm brass.

[buffybuster]

Actual, these have been making a splash at matches like the Gap Grind an Sniper Hide Cup. Barrel life is said to be very good with 140's running 3150ish.. Making them a great low recoiling slippery round with good energy on target so hit signatures are easily spotted.

Not that I need more darn calibers, but I am also interested in this.. Op keep us posted.. Forming the brass seems like a pita and some matches limit speed to 3,000 or 3,100 fps to minimize plate damage.




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Well aware of what is being claimed about the 6.5WSM and variants.