load data for 20br

[hoghunter]

anyone have load data for 20 br using h-322 and benchmark using 50 gr bergers

 

[Alycidon]

I am a bit confused !.

You have posed this question elsewhere but for a .204 Ruger with a 1 in 9 twist, if that is what it is then have a look here
nttp://www.lapua.com/fileadmin/user_upload/Relodata/.204Ruger.jpg

N133 is about the same burn rate as H322.

If however it is a 20BR with a 1 in 9 then I am working one up at present, I do though think that the H322 and the similar other powder are both to hot for this application. Start loads would have to be very low, this leads to an increased risk of detonation as opposed to burning. Case capacity is I believe around 37gr of water.

I started with N150 and have not yet found a better powder, I have also quickly tried N550 and N160, all with Fed 205s, I was looking for more velocity with lower presure. The idea did not work.

My start load for N150 was 25.0 from memory, my best accuracy wise worked up loads are 28.0- 29.5gr with velocity in the 3318-3450 envelope. Groups are .2s- .3s if I hold straight. In my next batch I will try BR4s