ACCURATE LOADS FOR 270 WSM

G

Guest

Guest
New 26" heavy Barrel on the way looking for some good accurate loads in the 90 and 110 grain bullet range

[ 12-01-2004: Message edited by: lassie ]
 

budlight

Well-Known Member
Joined
Sep 30, 2004
Messages
946
Location
Nevada
I don't have the WSM. I do have years of experience with .277's though.

I have never shot the 90's because it's poor BC and you have to get into other than 10:1 twist barrels.

I've only used 100's and prefer the 110's. The muzzle velocity is only 80 fps apart and by 200 yards the 110 is going faster.

I achive the highest velocities and accuracy with IMR or H-4350. With about 60.6 for 100's and 60.0 with 110's CCI 200 and loaded to about .003 from the lands. Speed is @3590 for 100's and 3510 for 110's

The 270 wsm case holds about 6-7 grains more than my cases. So these would be good starting loads. I have found that the most accurate rounds are often @100 or so feet per second slower than max acceptable for reloading case life. In my guns the best groups are made with MV's of @3400. But I use 140 HPBT's for paper so it's a moot question.

I used to even use 100 HP's until I figured out that there is no difference in damage and it has a lower BC so why use it. The 110 @3500 fps is also very destructive to small animals.

IMR 4320 or 4064 use about 7-8 grains less powder at max pressure and also loose about 200 FPS. On the other end I tried IMR 4831 and R-22 with the cases clear full and compressed at 64 grains and the speed was also 80 or so less. My advice is test powders really close on the burn rate chart to the 4350's for 100-110's

In the 140-150 grain bullets the r-22 IMR 7828 and H1000 shine.

[ 12-02-2004: Message edited by: budlight ]
 

Trending threads

Nightforce has great tracking capabilities, they are rugged, a bunch of elevation, holds zero forever, and reticles are designed for long range shooting. So if you are looking to shoot long distances constantly, then you need a scope that can take the abuse. -- gilmillan1


Culture Of Excellence At Nightforce Optics
By Len Backus

A high level of quality both in production and in service. Read More


Nightforce is such a solid combo of reticle, available elevation, glass that is good enough to shoot at the longest range you can dial. Nightforce has bullet proof construction that can handle the incidental horse rolling or some other rodeo action. -- bigngreen


Nightforce ATACR Scope Review
By Jeff Brozovich

The new NightForce ATACR is for sure a top choice for any long range shooter. Read More


The total package. Nightforce is the best I have used as far as turret feel and solid detents. I have never had one that didn't track right on and always return to zero. Nightforce NXS is the best value for everything I need. -- Broz


Nightforce Velocity 1000 Reticle Review
By Scott Shreve

I think Nightforce knocked it outta the park with this reticle! Read More

NightForce


Top