Barrel length 300WM

[.222]

I believe I may be reaching the end of the service life of the barrel of my Sendero 300WM. I am curious where the law of diminishing returns kicks in, in regards to barrel length with this caliber. My factory barrel is 26" and I am curious how much I could gain with a longer tube, and at what point longer becomes too long, from a ballistic point of view.

Additionally, if anyone has any input on a gunsmith to put it all together in the Houston, TX area.
Thanks,
~z

 

[.222]

Anybody?

 

[jjmp]

its really your choise, but if your looking for more bullet speed go longer,with a custom barrel you can change length,conture,twist,etc,etc, you can improve your stock by skim bedding the action,better trigger. the skys the limit . can''t tell you about a texas smith but their are some awesome ones here. look at gun photos.
regards

 

[Jimm]

my smith reccomended

I believe I may be reaching the end of the service life of the barrel of my Sendero 300WM. I am curious where the law of diminishing returns kicks in, in regards to barrel length with this caliber. My factory barrel is 26" and I am curious how much I could gain with a longer tube, and at what point longer becomes too long, from a ballistic point of view.

Additionally, if anyone has any input on a gunsmith to put it all together in the Houston, TX area.
Thanks,
~z

28" and 11 twist . I took his advice and am glad I did . 190 smks around 3050 to 3080 fps ( two different loads ) and 1/3 moa performance . I had originally wanted to shoot the 220 gr smks so was asking for a 10 twist bbl . He explained that the 300 wm just doesnt have enough " lead in its pencil " ( not enough powder capacity ) to0 push the 220 's fast enough to beat out the 190smks . He was right .

Jim B.

 

[338hammer]

300wm

About Vais Arms Inc. - Muzzlebrakes.com

Ron does super work.

The 300 is a fine cartridge while using the bullet weight in conjunction with powder capacity. Have a friend using the 190 MK'S at 3200fps from a 300X8Em Mag for 1000 yards.

338

 

[J E Custom]

222

If you went to 30" that would be about the point of diminishing
returns you were talking about.

28" would pick up about 75 more ft/sec and 30 about 50ft/sec
more than the 28" tube but would not be as manageable as the 28"
in a deer stand.

Also another way to pick up some velocity is with a hand laped
custom stainless barrel.

Living in texas I use a lot of Shillen barrels but cant say enough
about Lilja barrels. and have gotten extreamly good accuracy
from both.(less than 1/2 MOA with all rifles using these barrels).

Good luck on your build
J E CUSTOM

 

[.222]

Thank yall for the help. I'm prolly going with the 30" as I do more ridgetop hunting and dont often sit in a stand. Again, thanks.

 

[bagpuss]

my pss tube with one in ten twist liked a vel of 2850 and thats the general rule of these girls with 10 twist

on rebarreling I got a 32" 32mm thick tube with a short throat based on calculated figures that I would need about 74gr of h1000 in the new tube instead of the 78.2 needed in the 26" tube to get the same vel

I opted for a short throat because of............I wanted the bullet to sit near ontop of powder giving 98%ish fill and touch the lands

sent in a case that had been fired but full length sized so they could match a reamer to my die and a bullet together with the math and theory

get the gun back, loaded 74gr of h1000 (trusting my math and theory)and said good bye to my *** just incase, fired that first round with no work up etc and bang....................................got it right on the very first round

of course I would never recomend not working up a load but all the calculations had been ironed out with the smith and they were in agreement

300wm are one of a rare few that are considered dangerous to download

oh yeh 210 bergers are what I feed her

the longer barrel means less powder,minimum loads, top speed, less wear, less heat and more rounds

ja