My son has a weatherby Vanguard in 270 winchester and we would like to try 150 Sierra spitzer BT's. We have several manuals but no Sierra manual and
I know it's a mistake to cross reference manuals. I would appreciate starting and max loads for this bullet from anyone who has the manual. We have pretty many powders that would work and we always used 130 gr Interbonds. Thanks for the replies...PaLuke

I cross reference all my loads and use several manuels and load data to determine where to start. load data is only a reference to a give bullet weight and powder. if you pick a powder for a 150 gr bullet from any reloading data source always start low and work up to a maximum load. I do not recommend selecting a powder and bullet then load to max.
I have loaded a few.
sierra loads listed. 150grn sp
imr 3031 41 to 45grs 2800v
imr 4895 41.9 to 46 2800v
imr 4064 42.3 to 46.5 2800v
imr 4320 43.1 to 47.4 2800v
I like the imr4064

quote:

We have several manuals but no Sierra manual and
I know it's a mistake to cross reference manuals.

I disagree......as long as your looking at traditional cup and core bullets you can use any manual for anyone's bullet. (assuming you're "working up")

Just make sure that the same weight of bullet is used.

Don't have the manual but I will lend to what works in mine:

150gr Sierra BT 55gr of H-4831

PaLuke.
Sierra lists an accuracy load as R-22 53.7 gr
for 2800 fps.
It also lists a hunting load as R-22 55.2 gr.
for 2900 fps

These are MAX. loads listed in my Sierra manual for their 150gr. bullet.

Imr 3031-45gr. 2800 fps

RE-11-42gr. 2700 fps

Imr 4895-46gr. 2800 fps

Imr 4064-46.5gr. 2800 fps

Imr 4320-47.4gr. 2800 fps

RE-21-49.8gr. 2800 fps.

H380-45.7 gr. 2700 fps.

760BR-51gr. 2800 fps

Imr 4350-52.4gr. 2900 fps

H450-56.4 gr. 2900 fps

4831 (no preface) 56.2 gr. 2900 fps.

Enjoy roger

Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone..

These loads are from my Sierra manual and indicate the powders I would use.

I consider some powders listed in this manual to be too slow for the 270 win and 150 grainers.

These are the powders I would try.

H4350 52.0 grains for 2900fps
IMR-4831 54.7 grains for 2900fps
H4831 SC 56.2 grains for 2900fps
RE-22 55.2 grains for 2900fps
H1000 57.8 grains for 2800fps

These are listed as max loads so use caution.

Mt '06 New Mexico Elk was taken with the same rifle ( Wby Vngrd ) using a Sierra 150g GK at 202 lazered yards 1 shot bang flop. I used IMR 4350.

Thanks to everyone for the replies. We're going to load some H4831SC tonight starting at 55 grs. and working up from there. I'm going to start off at .050 off the lands and see how it goes. Again, thanks for the replies....PaLuke