bugboy
Junior Member
Posts: 34
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Post by bugboy on Aug 22, 2012 18:03:36 GMT -8
I received my type 2 bolt from tactical ammunition today and everything is put together. I've got some ammunition assembled using new Lapua brass, 123gr Amax and CFE223 powder. I started at 28gr and working up in .3 gr increments to 31.2gr and intend to shoot "ladder tests" (3 of each loaded) and checking for signs of pressure as I go. I will be looking for the smallest vertical dispersion. If there are two "nodes" I will go with the hotter load (assuming no excessive pressure signs). I don't have access to a chronograph. I've got 5 extra loaded at the low end for getting the scope on paper. Any flaws in this plan? Inputs are appreciated. I read conflicting info on the need to check the headspace. I've chambered some of the loaded ammo and everything seems to be in order. Is there something I need look for in regards to headspace?,,,,,, or do I just pull the trigger on the first round from an arms length away and hope for the best? 20" standard profile, machine finish, target crown, .264lbc JP adjustable gas block Tactical Ammunition Type II bolt Colt bolt carrier group Houge FF tube Burris MTAC 4.5-14x42 mil-dot/ballistic plex Colt lower with Accuracy Speaks trigger.
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Post by jamesg651 on Aug 23, 2012 8:19:46 GMT -8
Looks good! Let us know how she shoots. We'll be waiting on some range reports.
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Post by GLSHOOTER on Aug 23, 2012 12:34:27 GMT -8
Looks very nice. Without HS gages or a fired case you don't have a lot to work with. Now that being said the HS on every BHW barrel I have had, more than two BTW, has been within industry standard. When I get a new one in from Ritch after his massage of the upper I load up some new brass and head out for a break in session. I'm not even thinking about the head space.
If it was too small the cases won';t go in and I check that before I load a batch of ammo and I would bump the shouder as needed. If it was a tad long it will fire form and the shoulders will just be further forward. No biggy. One I get a batch of fired cases I can adjust my dies as needed.
Get out and make some holes.
Greg
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bugboy
Junior Member
Posts: 34
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Post by bugboy on Aug 23, 2012 13:07:43 GMT -8
Great, thanks.
I wanted to go out today but winds were 20mph with gusts to 32mph. Winds are supposed to die down tomorrow some.
If I don't post any group pictures it will be because me/rifle/loads weren't getting the job done. You know how it works, bragging photos get posted, ugly ones don't.
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Post by GLSHOOTER on Aug 23, 2012 13:35:36 GMT -8
Great, thanks. I wanted to go out today but winds were 20mph with gusts to 32mph. Winds are supposed to die down tomorrow some. If I don't post any group pictures it will be because me/rifle/loads weren't getting the job done. You know how it works, bragging photos get posted, ugly ones don't. In Kansas you know that is only a slight breeze. Oklahoma was the same way for me for thirty plus years!! Greg
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bugboy
Junior Member
Posts: 34
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Post by bugboy on Aug 26, 2012 12:45:46 GMT -8
Took the rifle out today and tried it out. The rifle didn't blow up and I still have my face!
It took about 4 shots to get the scope and adjustable gas block dialed in. Then out to 300 yds. to shoot the "ladder test".
Ladder test went alright. Looks like 31.0 31.3 and 31.6gr of CFE223 under a 123gr Amax may be where I need to explore more. These 3 loads had the lowest vertical spread and seemed most consistent. I'm thinking I'll load 5 each at 31.1, 31.3, 31.5, and 31.7 see what I get.
I don't have a chronograph so can't get you any velocity figures.
So far so good in regards to the new barrel. We were shooting on a graveled access road and the mirage started to screw with me pretty good.
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bugboy
Junior Member
Posts: 34
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Post by bugboy on Aug 27, 2012 18:52:16 GMT -8
Closing in on a load I believe. These were 123gr Amax on top of 31.8gr CFE223 with Wolf SRM primers in new Lapua brass seated to fit the magazine. Next I'll load up some groups of 5 in and around that 31.8gr. Looks like that BHW barrel may be a "shooter"!
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blm148
Junior Member
Posts: 34
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Post by blm148 on Aug 27, 2012 20:50:37 GMT -8
I need to get out of the .264lbc sub forum. threads like this are going to make me spend more money. Cuz i'm starting to convince myself that i now "need" a 264 or 243lbc. good shooting! and nice looking setup
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Deleted
Deleted Member
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Post by Deleted on Aug 28, 2012 11:53:42 GMT -8
Closing in on a load I believe. These were 123gr Amax on top of 31.8gr CFE223 with Wolf SRM primers in new Lapua brass seated to fit the magazine. Next I'll load up some groups of 5 in and around that 31.8gr. Looks like that BHW barrel may be a "shooter"! I loaded some 123 Amax's at 31.8 this morning. My results are similar to yours. I was shooting a 20" Black Hole .264 LBC with a target crown. Load: 31.8 gr CFE 223 Lapua brass CCI 450 primer 123 Amax seated at 2.290 Fired 10 shots 2689 FPS extreme spread of 37.2 fps. Standard deviation of 10.1 Great for a 10 shot string. Notes: on the hot side I would back this off a couple of tenths and see how it shoots.
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bugboy
Junior Member
Posts: 34
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Post by bugboy on Aug 30, 2012 13:52:26 GMT -8
I loaded some 123 Amax's at 31.8 this morning. My results are similar to yours. I was shooting a 20" Black Hole .264 LBC with a target crown. Load: 31.8 gr CFE 223 Lapua brass CCI 450 primer 123 Amax seated at 2.290 Fired 10 shots 2689 FPS extreme spread of 37.2 fps. Standard deviation of 10.1 Great for a 10 shot string. Notes: on the hot side I would back this off a couple of tenths and see how it shoots. I sure wish there was some data on this cartridge/powder combo. I guess I'll back it down a little,,,, but it sure is hard to ignore that group! I didn't see high pressure signs on the brass, but from what I read, you don't always get good pressure signs from the AR platform on the fired brass. I assume that by running loads "a little hot" like you stated I would be looking at potential bolt issues? or are we talking potential KABOOM issues? If it makes any difference, it was about 93f and high humidity and most of my shooting will be done in Nov. - Feb. time frame at much cooler temps (whitetail, coyotes and bobcats). I'm going to load up 5 each at 31.5, 31.6, 31.7 and 31.8 and see what kind of groups I get. I'll pick the lowest charge with acceptable groups.
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Post by GLSHOOTER on Aug 30, 2012 15:17:48 GMT -8
I loaded some 123 Amax's at 31.8 this morning. My results are similar to yours. I was shooting a 20" Black Hole .264 LBC with a target crown. Load: 31.8 gr CFE 223 Lapua brass CCI 450 primer 123 Amax seated at 2.290 Fired 10 shots 2689 FPS extreme spread of 37.2 fps. Standard deviation of 10.1 Great for a 10 shot string. Notes: on the hot side I would back this off a couple of tenths and see how it shoots. I sure wish there was some data on this cartridge/powder combo. I guess I'll back it down a little,,,, but it sure is hard to ignore that group! I didn't see high pressure signs on the brass, but from what I read, you don't always get good pressure signs from the AR platform on the fired brass. I assume that by running loads "a little hot" like you stated I would be looking at potential bolt issues? or are we talking potential KABOOM issues? If it makes any difference, it was about 93f and high humidity and most of my shooting will be done in Nov. - Feb. time frame at much cooler temps (whitetail, coyotes and bobcats). I'm going to load up 5 each at 31.5, 31.6, 31.7 and 31.8 and see what kind of groups I get. I'll pick the lowest charge with acceptable groups. It is more a brass life issue than anything else. We can run some super speeds but pay the price in the long run. Looking to make sure your braSs is not overworked through undersizing and watching for case growth are important when you start pushing the envelope, perhaps even more than normal. Greg
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bugboy
Junior Member
Posts: 34
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Post by bugboy on Aug 30, 2012 15:40:19 GMT -8
That's good to know.
Hopefully I can get some comparable groups at something a little less hot.
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Post by GLSHOOTER on Aug 31, 2012 14:46:38 GMT -8
That's good to know. Hopefully I can get some comparable groups at something a little less hot. I'm sure that the groups are there and you will find them. Greg
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