#11
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what case is the 20 bobcat bassed on ? or whats the diffrence?
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#12
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Sako L461 20-222
That Bobcat looks like a Ackley improved, but with out the shoulder set back as Parker did for his 20-222 ai. Is that about right ? Bill K
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#13
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20 Bobcat
The 20 Bobcat is a Kevin Weaver creation, basically a 222 necked to 20cal with a 40* shoulder and the sides blown out. For a single shot or bench rifle it's a good one. You'll never get it to feed from a magazine though.
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#14
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#15
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#16
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Sako L461 20-222
Looks like it will turn into a very fine weapon too use on the critters. Now for more, follow up, photos of the rifle and the critters it takes down. Bill K
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#17
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cant wait to here how it does mate
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#18
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I guess the Bobcat doesn't interest me on this particular rifle because I want to keep in the "mild" zone. If I hadn't already had all the 222 stuff, I probably would have gone with Vartarg.
I've already got a 22 BR if I want to ramp things up, and a 218 Bee, if I want to get way down. I think the Plain Jane will be a good compromise between the two. I just ordered an old 40X rimfire stock from Numrich, that I may use for this build if it's decent enough. Still have about a month to wait for my barrel.jd
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If you've got no regrets, you're just not payin attention |
#19
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I use Australian ADI powders for my reloading as they are more widely available here, and they have a reputation for being fairly stable over a range of temperatures.
I started by using AR2207, which is equivalent to Hodgdon H4198. The front of the ADI reloading book has an equivalence chart in it: http://www.adi-powders.com.au/handlo...quivalents.asp I am using 32gn v-maxes in this rifle. Brass is Winchester .222 that has been run through an Redding FLS S-type die with a .227" bush. I just use my old Super Simplex press with .222 seating die to seat the z-maxes. I started by using CCI small rifle primers with a reasonably mild load and saw some flattening. After discussions with a couple of friends I have switched to Remington BR small rifle primers and the flattening disappeared. In all I shot thirteen 4 shot groups with AR2207 for an average group size of 0.57". After some more valued input I tried the slightly slower Benchmark 1 (BM1), which doesn't seem to have a US equivalent. The ADI comparison chart suggest N133 is the closest match, which from Fireball's various posts seems to be a good thing in this case. The rifle really started to shine. I have shot ten 4 shot groups with charges of BM1 ranging from 22.0gns up to 24.7gns (fills about 2/3 up the neck, with the only pressure sign being a very slight cratering on primers) for an average group size of 0.45". A lot of the groups included one annoying driver-induced flyer - if I ignored those and took the overall average for the best 3 shots of each group it is 0.20". I'll add some more details around velocities over the chrony and post some pics up tonight (hopefully), Marcus |
#20
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