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600 overkill brass finally arrived

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22 January 2004, 19:30
Robgunbuilder
600 overkill brass finally arrived
Horneber finally sent me the 600 overkill brass samples after a year.The dimensions are on the plus side, but fit the chambers of both rifles. They are headstamped RG-600 Overkill and look very nice! I intend to give him the go ahead to make the entire order in February!-Rob


23 January 2004, 01:19
jeffeosso
Good that you got them...

from our experience, you mean, of course, you'll give him the order..... in feb..

lmao
jeffe
23 January 2004, 04:47
Robgunbuilder
Well- Dieter is on notice that he needs to finish this order. He's heard from a bunch of us about it and knows what he has to do now. I will test fire the brass this weekend at incremental power levels up to Proof level and if it holds Ok will tell him to proceed. Looks like he held all the dimensions pretty close this time. It's not an easy thing to do to define dimensions and make a new cartridge to them that works the first time.-Rob
23 January 2004, 05:46
<BMG>
Glad to hear!

Thanks Rob.
23 January 2004, 15:09
Grandpasez
Rob--Looks great. How does case capacity compare to your machined cases?Ed.
24 January 2004, 10:17
Robgunbuilder
Ed- The VIRGIN brass seems to have slightly less capacity than Fritz's Lathe turned brass. However, once I fire it I'm sure the capacity will increase. I'm doing that this weekend. My fireforming load is 157 grs of IMR7828, Fed 215 and a 900 gr Woodleigh softpoint. Loaded rounds seem to chamber and eject very nicely! I'll measure water capacity on fired cases on monday. If everything works out well I'm going to ask Dieter to reduce the belt to case head dimension by about .001 or .002 and go ahead with the rest of the run.-Rob
24 January 2004, 11:14
Grandpasez
Rob--What is the OD of the neck with a bullet loaded?Ed.
24 January 2004, 11:49
Robgunbuilder
ED-I'll get a measurement tonight!-Rob
24 January 2004, 19:13
RNS
Rob
Glad to see you are making progress.I never faxed that letter to you so I will do that monday or so.

RNS
28 January 2004, 07:13
Grandpasez
Rob-did you measure case neck yet or get any load testing done..Ed
28 January 2004, 07:22
Robgunbuilder
Ed- Fired it last night. WoW WEE! I used 156 grs of H414 and a 900 gr woodleigh. This was in the GMA action rifle. Didn't have the chrono working but it was HOT! Brass chambers and ejected beautifully. Fired four rounds, scared the heck out of the on-lookers and went home. Very Very pleased! I told Dieter to back the headspace off by .001 and make 1100 cases. He says they will be completed in Feb. He was very pleased to hear of these results. Been a long project! I took the measurements but left them at home. I'll post them tonight along with some data on the fired case volume!-Rob
28 January 2004, 07:37
Judy
Ed- Fired it last night. WoW WEE! I used 156 grs of H414 and a 900 gr woodleigh. This was in the GMA action rifle. Didn't have the chrono working but it was HOT! Brass chambers and ejected beautifully. Fired four rounds, scared the heck out of the on-lookers and went home. Very Very pleased! I told Dieter to back the headspace off by .001 and make 1100 cases. He says they will be completed in Feb. He was very pleased to hear of these results. Been a long project! I took the measurements but left them at home. I'll post them tonight along with some data on the fired case volume!-Rob

ROTFLMAO!!!
28 January 2004, 11:54
Stryker225
Damn...

I still want a nice 577 tyrannosaur in the distant future, just because it has the name of my favorite animals and for bragging... but 600 OK is a bit too hardkore for me to even contemplate right now.
28 January 2004, 12:31
500grains
Rob, are you willing to post pics of either of your 600 OK's? If not, I understand, but there are several of us who would really enjoy photos. Thanks.
28 January 2004, 14:05
Robgunbuilder
No problem, I'll post a few photos.It will be fun!-Rob