#21
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I am not sure about the .20-250, but RL16 is known to make a carbon ring right past the throat in the 6mmCM. It is a fantastic powder in the CM. Just something to keep on top of.
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#22
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RL16 with 55's failed
First time out with the recent 20-250Ackley build.
Focused on RL16 with the Berger 55's Failed to obtain the expected 3700 speeds and ES/SD dropped as the powder increments went up. 35.0 = 3352 36.0 = 3471 37.0 = 3531 The case capacity using RL16 was 70-75% I'll try a slower powder TO increase case capacity TO GET more velocity I don't have RL26 But have H4350 N550 |
#23
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To bad you don't have any RL26 I'd bet that would get you the best velocity.
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#24
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Unless I am mistaken, powders like 4895, CFE223 and some others all reach into the 3800 mark.
Check Hornaday's loading site, for some. |
#25
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Good idea for a 22-250 but not so much for a 20-250.
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#26
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I would think that with a start load lower than in the 22-250, you could find a very good load, in the 3800 range, for the 20-250.
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#27
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The 20-250 is a bit of a different animal than the 22-250 and with the 55's tends to favor powders a little more on the slower side. I shoot the Berger 55's in my 20-250 and have a really accurate load with RL16 that launches them 3650. I'm probably giving up 100-150fps to what RL26 could do but it shoots so well with my current load I haven't messed with it much.
Even in a 22-250 or 220Swift you're using upper end book loads to get 55's up to 3800. |
#28
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I'm betting with RL15 or perhaps the new 15.5 he would find the speed and accuracy he wants.
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#29
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Quote:
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#30
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You're not referring using 4064 in a 20-250 ? are you?
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