325 WSM actual factory velosity

[shooter12]

As title says.
I was playing a bit with my Winchester 70 Coyote and 220 gr Sierra GK and
used IMR 4350 ,4451,Ramshot Big Game and could only get 2750 f.s with a good accuracy. Past 2800f.s signs of high pressure were showing up
Could anyone here get 2840 f.s with 220 gr bullet out of 24 inch barrel?
This is what Winchester I believe claims for 220gr factory load and what powder did you use?

[Cappy]

Give H4350 a try. Its been awhile but I believe I was closer to the 2800 mark with it. Failing that N550 maybe the answer I seem to be able to use that powder in H4350's place and push things a little quicker in other rounds.

[LongBomber]

I got the best speed with RL19 with 200gr, should be near the top speeds for the 220 as well. The most consistency I had was h4831 - roughly 2900 and consistent groups.

[shooter12]

Originally Posted by Cappy

Give H4350 a try. Its been awhile but I believe I was closer to the 2800 mark with it. Failing that N550 maybe the answer I seem to be able to use that powder in H4350's place and push things a little quicker in other rounds.

I have half pound of N550 left on my shelf but don't see in Vihtavuory manual any loads for 325 wsm.Any idea where to start?


Hodgdon manual shows 2638 f.s as a max load with h4831 LongBomber, a bit slower then I wanted .

Thank you guys for reply !

I am still wondering how the hell they could get 2840 f.s in a standard factory ammo and not a single reloading manual gives that velocity..

[possum]

Originally Posted by shooter12

I am still wondering how the hell they could get 2840 f.s in a standard factory ammo and not a single reloading manual gives that velocity..

Double base powder that is Not Available to hand loaders.

[shooter12]

Originally Posted by possum

Double base powder that is Not Available to hand loaders.

That kind of sucks

[Cappy]

Check the Sierra loading manual. I think trying to get a 220gr doing the speed you are looking for is going to be pretty tough though.