39 Sierra Factory load

[mijonas]

I have a Rem XR100 and have recently shot consecutive 100yd 3-shot groups of.196", .205", and .270" with the Federal factory ammo which uses the 39 Sierra BK's. While I primarily hand load and have several other combinations which are capable of similar-size groupings, I am curious as to what powder Federal uses in this loading. I pulled one of these cartridges apart and found a ball powder weighing 27.6 grains. This factory loading is 2.250" O.A.L and is .113" off the lands in my rifle. I wrote Federal and they answered that they do not publish that info. Does anyone have an idea how to find out this info?

[KVW]

Good luck on that venture. Bullet mfg's don't give that info. Not that I know of anyway. If you can figure out the velocity it's shooting it may take a while but you can start researching the different ball powders and find one that is close to what you have found so far.

[KVW]

Sorry I forgot in the prior post but WELCOME to the forum. Great bunch of guys here.

[glenn asher]

They don't use canister powders like we buy, they buy stuff by the truckload and blend it to meet the specs they want. All companies do that.