which powder for Sierra 39gn. BK. and Berger 40gn. bthp

p5200

p5200

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I plan to pick up a pound of one of these powders to try mainly for accuracy, of either H4895 or H322 which I have locally. these rounds are for the .204 Ruger CZ 527 Varmint in Kevlar 1:12 twist 24" barrel. Which would you pick? I might, be able to find some H335 also I already have some Benchmark and Varget at this time. Thanks for all advice!
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Powders I've tried in my .204s include RL10x, RL15, H322, WW748
With H322 I couldn't get the bullet speed I was getting with either of the Alliant powders. My first choice is RL10x with 39/40 gr. bullets.
 
Originally Posted By: Blackhawk43All I have used in my 204 is Benchmark and see no reason to change.

Same here. If Benchmark is available to you, you'd be making a wise choice to give it a try.
 
Originally Posted By: skb2706Powders I've tried in my .204s include RL10x, RL15, H322, WW748
With H322 I couldn't get the bullet speed I was getting with either of the Alliant powders. My first choice is RL10x with 39/40 gr. bullets.

#1 rl10 and 39gr sierra shoots great in my savage
 
Originally Posted By: jdunhamOriginally Posted By: skb2706 My first choice is RL10x with 39/40 gr. bullets.

That is my choice as well.

X4.

I tried a plethora of powders in my 204. TAC gave great groups, as did N140. But 10X gave great groups with excellent velocity. My 204 did not like the 40 Bergers
 
Tried Win powder, then some 4895, then got a first 204 to go with Reloader 10x - finally. But then in a second 204, I went with Benchmark and all I can say is Wow! 2 different bullets came together on the first day, and then 204 #3 worked out the exact same way. That one was 39's & 35's though rather than 32's & 35's. The first one (w/RL10x) only ever worked with 32 BK's -but I'm convinced we could get it grouping great with both 35's & 39's using Benchmark powder.

+1 for Benchmark!
 
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