300 BLK w/ 175 SMK Data?

[gimpy]

Does anyone have any recipes for this? I have some 296 that I need to use up, and have seen loads using that powder, but not with the 175.

 

[rjacobs]

Sierra says OAL at 2.105 for the 175g SMK. The closest data(speed wise) they have is A1680 which has a starting load of 14g and a max of 17.1g The rest of their data is for slower powders(H4198 and N120).

I would start at 13g and work up from there looking for pressure. Probably wont get much above 15.5 or 16g.

 

[gimpy]

Thanks. My Sierra book doesn't have data... Time to upgrade, I suppose. I have 4227 also, not sure if there is data for that.