300 WSM Rifle Build

[winxp_man]

I'd definitely be happy to hit 2k rounds at this point! !!

Well with decent loads that do not run to hot you should make that number happen.

[shooter1975]

Yeah ill definitely try to keep the loads not so hot!! More than likely my starting load will be 60g of IMR 4350 and some Berger 190 VLDs.

[shooter1975]

Well C&H PWS finished up my receiver and its inbound to start my DROS! Rifle should be built shortly thereafter. Here's some pics they sent me of my receiver. The pic in my first post was what my receiver possibly could look like.

[LynnJr]

Yeah ill definitely try to keep the loads not so hot!! More than likely my starting load will be 60g of IMR 4350 and some Berger 190 VLDs.

My suggestion of 65 grains of H4350 is not a hot load. It chronographed at 3050 fps across Jerry Tierneys Oehler 35 at the 2009 1000 yard nationals with single digit extreme spreads.
I was using a 13.25 twist Bartlein 32 inches long and 187 grain BIB bullets.
I fired my Norma brass 4 times and sent it off to Warner Tool and Die for a custom full length die and they said the brass was not fully formed yet because it had not expanded much.
My chamber was cut with 0.287 freebore because of the long bearing surface associated with the 187 BIB bullet.
Using 190 grain Sierras it shot lights out with the same load.

[shooter1975]

Ah thank you! What do you think about the 210 Berger VLDs? Im torn between either the 190s or the 210s. After some research my starting load for the 210s would be 60 grains of H4350 around the 2800-2850 fps range. Still unsure though.

[bsumoba]

230's!!!!!

[shooter1975]

230's!!!!!

AHHH! Another option!

[Bhobbs]

I think the 215 or 230 hybrids would be a better choice than the 190 SMK.

[LynnJr]

To determine which bullet weight you want to use You need to find the most accurate load for each bullet and write down the velocity. You then go to the JBM Ballistics calculator and enter the accuracy velocity not the top velocity for each choice.
The calculator has zero emotion so it will give you a straight forward unbiased evaluation. I would use the bullet the calculator chooses.

If your particular gun likes 3100 fps with a 190 2800 fps with a 210 and 2600 with the 230 you would plug those in and look at your time of flight to the distance you plan on shooting.

One caveat would be if one bullet simply drills tiny holes and the other two offer up just nice groups accuracy trumps all else.

[Thorax]

I've had more luck with 208 Amaxs than I have with 190 bergers.
The Amaxs are cheaper too, way cheaper.

Now I don't have a WSM, but I have win mags, wby mags, and 30-06's.
Same 1:10 twist on the better shooting ones. All 30 cal.
But yea, imr 4350 all the way except for one of my woobies likes r22.

[shooter1975]

I've had more luck with 208 Amaxs than I have with 190 bergers.
The Amaxs are cheaper too, way cheaper.

Now I don't have a WSM, but I have win mags, wby mags, and 30-06's.
Same 1:10 twist on the better shooting ones. All 30 cal.
But yea, imr 4350 all the way except for one of my woobies likes r22.

Thorax, in your opinion are the burn rates about the same for IMR 4350 and H4350? Also isn't the IMR powder more temp sensitive??

[Rbutler]

have you thought of a 30mm tube on the optics? Should get you a little more adjustment for the ELR action.

Either way bad *** rifle!

[Thorax]

Thorax, in your opinion are the burn rates about the same for IMR 4350 and H4350? Also isn't the IMR powder more temp sensitive??

IMR and H 4350 are *supposed* to be so close they are interchangeable.
I honestly don't feel that's the case.
Your mileage....well. it's yours, grains of salt and all that.

Temp sensitive ?
You must be joking.
I live in Montana where 110*+ is quite common in the long days of summer and -50* in the short days of winter happens more than I want to admit.
Never seen a problem here so I doubt there is any issue on this planet.

[brando]

Don't make the mistake of skimping on the optic for ELR shooting or picking up one with high magnification. Available elevation is most important if you want to take it to the maximum accurate distance possible. Lots of higher magnification scopes (30x or more) have reduced erector cell travel and therefore less available elevation. Look at the velocities and distances you plan to shoot and then calculate how many mils of elevation you'll need - that should be the key determination of what optic you should get. Also, get a base with at least 30MOA built into it.

[SMarquez]

Who is fitting your barrel to action? Do you have final fitting of action to stock plans? I like what you are doing so far.