9 twist 20cal. what chamber? what bullet?
- Thread starter Hammerdown22
- Start date
Gabe22BR
Gold $$ Contributor
Powder choice only thing holding YOU back.. there’s others.. accuracy trumps speed all day long !!!
20VarTarg
Silver $$ Contributor
Very true Gabe.....I tried a faster powder the other day and crazy high pressures. Unfortunately I didn't have the Chronograph that day. I'm open to ideas if you'd like to share them with me.
20VarTarg
Silver $$ Contributor
N-135 was near catastrophic
RL15 I have and was planning to try it. I have started to use it a lot more recently. I like it a lot better then Varget
20VarTarg
Silver $$ Contributor
Is this with the 55 Berger???
L.Sherm
Silver $$ Contributor
No I only have an 11 twist, 39 TNT's
I would try it though, AA powder seems to be easy to get
L.Sherm
Silver $$ Contributor
If I remember correctly I'm about 29.3 gr of AA2520 with the 39 TNT.
I just checked my notes im at 29.6 with AA2520, keep in mind though this is with an AI. My 20PPCAI also preferred a 7.5 primer vrs a 450.
I've barely got this thing up and running only probably 100 rounds on it mostly fireforming brass, I have not ran it up yet and found pressure
I just checked my notes im at 29.6 with AA2520, keep in mind though this is with an AI. My 20PPCAI also preferred a 7.5 primer vrs a 450.
I've barely got this thing up and running only probably 100 rounds on it mostly fireforming brass, I have not ran it up yet and found pressure
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Why do you say anything but varget? I'm looking to run 50s and thinking varget is going to be about the best out of the hogdon powders? Probably a bit too fast
L.Sherm
Silver $$ Contributor
Personally I think Varget is to slow for a 20 cal case.
The only exception I could think of could be the 20-250
Yeah ok. I'm just looking to use it in the field and if it will shoot around .3 I'd be happy.
What would be better for 20br and 55s
9 twist or 8 twist
9 twist or 8 twist
I think I have talked myself out of the really overbore 20s
barrel life.
I'm leaning towards 20 dasher or 20br
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