204 sd

[edw]

I realize that a low sd is not always necessary for accuracy at short to mid range but it bugs me to see a high sd. My load for my 204 is 27.0 grs of H4895 39bk and 7 1/2 primers. This load shoots tight moa but my sd is 41! In my Dasher and my Creedmoor I keep my sd under 10. Im using a Magneeto and Im thinking its giving me good readings. Id love to try a radar but no chances yet.

 

[xswanted]

My personal opinion is that when a cartridge begins to push the envelope of speed (+4000fps) your SD numbers will be exponentially harder to have low.

If that makes sense.

 

[edw]

I increased my load .2 and spent extra time with the cases and careful powder measuring and now have SDs in the 20s