39 grains 2208 with sierra 150 gr gameking in a no 4 action. only use flat based bullets would be my advice as they set up better in worn throats and generous bores mostly found in 303s. My one...
Type: Posts; User: Marty Henry
39 grains 2208 with sierra 150 gr gameking in a no 4 action. only use flat based bullets would be my advice as they set up better in worn throats and generous bores mostly found in 303s. My one...
what model is it as that'll have an influence on the load. What works in a no1 mk111 might not be so good in a no 4 mk1