300 win mag

[Kamikaze007]

I am wanting to buy a 300 wm it is used and has a 1/10 twist 24” barrel. It’s a ruger Hawkeye. I have never had a .308 caliber and have no clue about twist rates and bullets weights for them. I would like to shoot the lightest bullets for most of my hunting every now and then I would like to take bigger game and or just shoot longer distances at steel. So what bullet weight would you expect to be able to use. Hoping 110gr nosler varmagedon on sages site will work. After that not as worried about the heavier ones... let’s be honest it’s a 300 wm probably won’t shoot it a ton.

Would prefer people with experience non of the I googled it and know everything people. Not trying to be rude just would like to hear what you and your win mag have done.

Thank you for any help!


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[SAWMAN]

Simply - - -> Being a somewhat faster .308" the 300Win Mag,with a 1:10 twist will shoot anything great. From the 220 down to a 110. Go fer it.
For the sake of "full disclosure " . . . I do not now,nor have I ever, owned a 300Win Mag. But I did not have to Google it. I'm just one smart son of a bitch. --- SAWMAN

[Jay Andrew]

The concern with shooting a varmit bullet from a 300 Win Mag is you can literally overspin the bullet. It will come apart a short ways from the muzzle and spend shrapnel out radially down range. The jackets are thin, and they are built to work within a range of ideal velocities.

Now you can download some, but with the large case capacity of the 300 Win Mag you have to be careful not to download below 80% fill. You’ll start getting inconsistent P/V and if you download low enough it’s not unheard of having a detonation. It’s rare, but it can happen with a powder and lots of unoccupied case volume.


I did some 150gr loads with 300 Win Mag which would be excellent deer or elk loads. I think the lightest I would go bullet wise would be a 130gr but I would also not push it to the max.


Reloading...it’s like knitting for men.

[Kamikaze007]

So this is where I don’t know how a 308 compares to a 224. As most 224 at least hornady will do well up to about 290,000 RPM. This is according to hornady. Most V-max are rated to high velocities. I could not find the varmageddon max velocity however 110 V-max is 3900. According to book data as I don’t even have a 300 wm yet they are pushed to around 3400-3600 for the 110gr. I find most of the time that is a very safe load when you look at published data. So I may be able to hit 3700 or even 3800. Still not at 3900. That is still below 275k RPM with the 1/10 twist. I may have to call hornady to get max RPM as the book didn’t have it.

However it is good to know that you have to be careful with case capacity. Thanks for the tip.


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[Jay Andrew]

Yep, if they publish the data for it, I agree. Unless they make a note that says “Only for 1:12 twist or slower”.

The only difference between the forces on a . 22 and the .308 is the centrifugal force on the .308 is going to be greater for a given twist/velocity then on a .22. The greater diameter means the radial velocity of the jacket is also greater.

So it’s harder to make a .308 Cal thin varmint bullet withstand high velocity then for a .22 Cal.

I am sure if you put a call/email into customer service they can provide you with the twist rate and velocity their bullets will withstand.


Reloading...it’s like knitting for men.

[SAWMAN]

IMHO - - -> As a general rule a bullet of the more common makeup will not come apart after leaving the bbl no matter the (within reason) rotational velocity AS LONG AS it does not hit anything on the way to the target.
I have blown up 40gr NosBalTips by hitting a single blade of grass coming out of my 220Swift at >4000fps but not at 3850fps.
I do not know of a single 35 or 40 gr that will come apart at 223AI vels from a 1:7 twist bbl. Or a single 50gr that will come apart out of a 1:10 twist 22-250 bbl.
I do believe however that the condition of the inner bbl can do so much damage to a bullet and that will heavily contribute to the bullets integrity in flight.
Also remember that the forward velocity of a bullet slows down quite rapidly but the rotational velocity slows down very little. Even at the extended ranges.
But if you have concernes about a bullets integrity,simply choose a all copper bullet like the Barnes TSX/TTSX and Hornady GMX. ---- SAWMAN