#91
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Quote:
Once you have established that base line then work up to Western Powders maximum loads and report your measurements and velocities achieved. At that point you will likely have measurable Web expansion that can only be accuratly measured with a blade micrometer. Anything over 0.0003" is high but 0.0005" would still be safe. This and multiple firings of the two brass will determine if one is "better than the other" and if over 4100 fps is "Safe in the 20 SCC". I have drawn up the 17 FB case ,with actual measurements from a new case, a Fire formed 20 Vt case and my estimation of a fireformed 20SCC with 1/2 grain greater capacity than the 20 VT. I only included the 20 EXTREME for comparison. It actually holds 3 grains more H 4198 than the 20 VT. [IMG][/IMG] I look forward to the results of the comparison test. If all I get is more of the same comments that is fine too but will prove nothing. If my observations and comments are proven to be wrong I will be the first to congratulate the designer of the 20 SCC and the Nosler brass. |
#92
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20 VarTarg
Sorry 20 Extreme I am not into challenge's. I have told you what I measure, etc. How my 20 SCC is working and that is it. You enjoy your firearms, loads, etc. I will do like wise. Safe and sane reloading, been doing it since around 1953 in various cartridges and have never had any issues and do not intend too, either. Have a good time with our shooting sports, varmint hunting and how ever you like to shoot. Bill K
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#93
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I have a new Krieger 12 twist 20 cal rem varmint barrel and a rem 700 B prefix 223 bolt face action. May just build me a new 20 Vartarg or 20 Tac!!!!
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#94
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20 VarTarg
You would be happy with either one. They are both very fine 20 caliber cartridges, like some of the other 20's. Everyone has a choice and can have a blast with them, from paper to varmints. Enjoy you choice and go for it. Bill K I should add that the 17 and 20's are addictive.
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#95
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Oh I know how the 20s are. I have been hooked on them since 2004 when I first fired a friends Vartarg. I have had 20 tacs 204s 20vts and 20ppc. Also had one summer of testing a 20br fast twist. 20 Vartarg and 20 PPC are two of my favorites
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#96
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20 VarTarg
Then I sure do not have to tell you how much fun they are.. We have a great sport/hobby.. Bill K
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#97
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I finally got around to shooting my Cooper 21 in 20 Vartarg. Using 18gr of R-7 in Nosler brass, behind the 32gr v-max, fire forming is delivering groups under 1/2moa, with the best under 3/8 moa. Seating depth is very sensitive, and best accuracy, is with the bullets just kissing the lands. I have not chrongraphed any loads yet.
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#98
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20 VarTarg
Quote:
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#99
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New 20 Vartarg in the making. I have on hand a Krieger 12 twist Rem Varmint Contour Barrel, a Mcmillan HTG Marine sniper m40a1 Stock, and a Rem 700 B serial number late 70"s 223 bolt face action. This will be my third 20 Vartarg. It should be like my others Eyeball Accurate!!!!!!
Last edited by HillbillySniper; 05-18-2014 at 04:49 AM. |
#100
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Sold my Cooper 20VT to George a while back, loved it,i hated the brass.....
Now that Lapua is making .221 brass I`ll be building a .20-221AI essentially Brad`s .20SCC. I asked about this cartridge years back and a couple members here said they had built one or two and that they performed well... I just love the 40* shoulder on cases and have many with it, so I guess one more can`t hurt... I`d probably be doing another .20VT, but Brad has had dies made up for his cartridge, so off I go..... |
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