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BL-C(2) load suggestions

This is a discussion on BL-C(2) load suggestions within the Ammunition forums, part of the M14 M1A Forum category; Hi, I just started to handload. Can anyone give me some advice on what load of BL-C(2) will work well with a Seirra Match BTHP ...


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Old May 7th, 2011, 04:32 PM   #1
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BL-C(2) load suggestions

Hi,

I just started to handload. Can anyone give me some advice on what load of BL-C(2) will work well with a Seirra Match BTHP 168gr. bullet? I went to the range with my very first loads, firing on 41.0 of powder, and it grouped at about 1.25 or so. I just want to speed up the process and save some powder and bullets, so any suggestions of what loads work well for you guys would be greatly appreciated. My M25 can group around .5-.75 with factory match ammo 168gr.

Thanks

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Old May 7th, 2011, 04:54 PM   #2
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Why not just try a few "ladder Loads" increasing powder by.2-.3 grains or if you're lazy....Point-5 grains.
You won't have to make many to see what's generally better. Read not only bullet pattern but especially brass condition as you increase...looking for primer distortion and possible "case head shines".
More importantly..when you've checked loading data...whats the safe range for BLC(2) and 168's?
That needs to be your primary source of concern.

"Search: is your friend:

I've probably used more BL-C(2)/ WC-846 than any other powder over the years. 60-70# in .308, .223, 30-06 and others. One of my favorite match loads is 44gr BL-C(2) capped with a 168 Nosler CC or SMK in a LC case. 10 round 1.5" group at 100 yards with iron sights from prone with a sling at 2600 fps. I don't like it so much on a hot day (90-95+) as velocity starts to become inconsistant. I'm trying Varget and IMR 4064 this summer as a result of that.

Eagle 1


From Hodgdon's Data Site:
168 GR. SIE HPBT Hodgdon BL-C(2) .308" 2.800" 44.0 2569 39,400 CUP 47.0 2754 50,200 CUP

I found in .223...BLC sometimes needs a heavy load to group the best..if your rifle and brass handles it.
You may be ok checking out the 44 grain load in your gun and seeing how it prints and how the brass looks....and see if you need anymore than that.
YMMV


Last edited by drshame; May 20th, 2011 at 05:20 PM.
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Old May 7th, 2011, 05:44 PM   #3
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Every rifle has it's own unique quirks and so there is no perfect load that all people will be happy with.

That being said, a powder charge weight of 43.4gr is listed as the top load for a 178gr Hornady bullet in the Hornady reloading manual's service rifle section. Being that your bullet is a little lighter you can use a little more powder and I think that the 44gr charge weight mentioned would be reasonable.

In addition, I use QuickLOAD software for helping identify possible loads and it indicates that you could go as high as 45.8gr and still keep chamber pressures in the 55,000 psi range. But thats computer software and there are a lot of variables that can change that high end limit. If you decide to go beyond 44gr then the risk is yours; please follow good safety procedures.

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Old May 7th, 2011, 07:05 PM   #4
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Quote:
Originally Posted by RAMMAC View Post
Every rifle has it's own unique quirks and so there is no perfect load that all people will be happy with.

That being said, a powder charge weight of 43.4gr is listed as the top load for a 178gr Hornady bullet in the Hornady reloading manual's service rifle section. Being that your bullet is a little lighter you can use a little more powder and I think that the 44gr charge weight mentioned would be reasonable.

In addition, I use QuickLOAD software for helping identify possible loads and it indicates that you could go as high as 45.8gr and still keep chamber pressures in the 55,000 psi range. But thats computer software and there are a lot of variables that can change that high end limit. If you decide to go beyond 44gr then the risk is yours; please follow good safety procedures.
Thanks. I'm going to work up some loads at 42, 42.5, 43, 43.5 and see how they group. Then I'll try some .2,.3,.4,.... increments if I don't get some tight groups. I should watch less hockey and get to work.

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Old May 7th, 2011, 09:27 PM   #5
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I have shot several pounds of BLC-2 in .223, .308 and 30-06. Not as accurate as the IMRs and Varget and RL 15. And near max loads can get a little quirky in hot temps.

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Old May 18th, 2011, 07:09 PM   #6
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Is BLC-2 the same as WC846? I can't find that powder anywhere.

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Old May 18th, 2011, 08:05 PM   #7
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I've had good luck with BLC-2 over the years and here are a couple of my pet loads YMMV.

Very accurate but not real fast 168Grn SMK over 43.8Grn BLC-2.

Very close match to Federal Gold Metal Match Ammo
168 SMK over 45.1Grn BLC-2 .

I've used both Winchester Large Rifle Primers and CCI Large Rifle Magnum Primers with these loads. Visual inspection for pressure signs and chrono data show very little difference between primers. Personally I like CCI LRMPrimers a little better.

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Old May 18th, 2011, 10:22 PM   #8
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Quote:
Originally Posted by Swamp Rat View Post
Is BLC-2 the same as WC846? I can't find that powder anywhere.
http://home.hiwaay.net/~stargate/powder/powder.htm

The link is to a burn rate chart that rates them as being close to each other (see 157 & 158).

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Old May 21st, 2011, 11:00 PM   #9
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not.....

Quote:
Originally Posted by Swamp Rat View Post
Is BLC-2 the same as WC846? I can't find that powder anywhere.
not no but hell no. wc846 is rumored to be blc2, it is not and i suppose this may vary by lot. the 846 i have loaded to blc2 data is way hot.start at around 40 grs. with mag primers, chrony and watch cases,work up from there.i know we hear that alot, about working up loads but with this powder i highly recommend it.i have some good data for the lot i have and would share,but with all the variables i think it best to work up your own.the load i use shoots quite well,good velocity and runs my guns nice. i do think it is also prudent to not use in 5.56.i am all about surplus powders for the price savings but each lot needs to be approached in the manner we all have been taught, research,start moderately low but not too low and work your way up .5 grains at a time,that is POINT 5 grains at a time.be careful and enjoy.

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Old May 21st, 2011, 11:31 PM   #10
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I don't worry about this stuff, I buy factory powder and put all the guess work aside. The problem with the pull down powders is that you can have some pretty large variances in performance and there is no way to know until you try it. So it's like re-developing your load every time you buy a different lot of powder.

I know, everybody says that it's so much cheaper, really? By the time you pay the hazmat fees and shipping charges and then account for having to re-develop your hand-loads I don't think that there is enough difference to be worth it. And then there is that one time you cut corners a bit and didn't redevelop your load and you blew up your rifle, no thanks not for me,it isn't worth the worry and trouble.

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Old May 22nd, 2011, 11:01 AM   #11
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It used to be significantly cheaper...........$60 for an 8# jug. I started using pull-down powders 20 years ago when it was running $45 for an 8# jug. At that time commercial powder was still about $12-15/ pound and $90-100/ 8# jug. Bl-C(2) is the cannister equivalent of WC-846. BL-C(2) is made and then blended with other lots to give the same burning rate from one lot to the next. WC-846 is not. The .gov simply adjusts the amount of powder in each charge to give the specified velocity and if it falls within safe pressure limits, calls it good.

These days, the pulldown powder is not that much less expensive than commercial. Its not worth the $15-20 you save to have to work up your load every time you buy a new lot of powder. YMMV.

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