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300 WSM Loads

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27 August 2002, 08:51
RJB
300 WSM Loads
What powders are working the best for you in the 300 WSM using 150 and 180 gr bullets?
27 August 2002, 08:53
ricciardelli
150's, H-414 From 62.0 grains to 67.0 grains and Winchester WLR primer.

180's, H-414 From 59.0 grains to 65.0 grains and Winchester WLR primer.
28 August 2002, 03:47
RJB
Thanks ricciardelli, I have been breaking in a new rifle and loaded 150 gr. using H4350 and W760.

RJB
28 August 2002, 18:51
Brad
I've found H4350 and RL22 to be the best powders so far in my 300 WSM with 180 gr. bullets... I haven't seen the need for lighter bullets in this cartridge so can't comment on any other powder's except those for the 180's.

Brad
29 August 2002, 13:31
Dave Jenkins
I two different rifles (Win M70 and custom TC Encore)RL19 and CCI 250 Mag primers have produced the best groups for me with Barnes 140 X home moly coated and 165 SSTs. Also Varget did very well with the Hornady 150 SSTs. I have some 180 Nosler Part. over some RL19 waiting to go..I'll post the results.
Dave [Wink]