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Posted: 3/30/2012 9:08:15 PM EDT
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Which 55 gr FMJ? Use a better bullet to judge accuracy. My FMJ groups look like that. Better bullets=better groups. It's a popular thing to post how temp sensitive BLC2 is. I have used it for years with no problems. But I don't let my ammo or rifle bake in the sun for hours either. I use the same 26.0 gr load, it shoots fine for me. Every rifle is different. You have to find what works for you. Next time you buy powder try some CFE 223. Measures like H-335 and as accurate as Varget without the hassle.
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Which 55 gr FMJ? Use a better bullet to judge accuracy. My FMJ groups look like that. Better bullets=better groups. It's a popular thing to post how temp sensitive BLC2 is. I have used it for years with no problems. But I don't let my ammo or rifle bake in the sun for hours either. I use the same 26.0 gr load, it shoots fine for me. Every rifle is different. You have to find what works for you. Next time you buy powder try some CFE 223. Measures like H-335 and as accurate as Varget without the hassle. Bullets used where Hornady 55 Grain FMJBT and Hornady 55 Grain Spire Point with Cannelure i will defiantly be trying out CFE223 next powder purchase. I haven't wanted to buy in bulk online yet without trying it first, but i have a feeling CFE223 is going to be a winner in my book so ill get 8# of it My local fun shop said they are not sure when they are going to start carrying it, and they only carry 1# cans anyways |
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Be very careful of BLC down here in TX, work your loads up in the summer heat. 'Borg I have heard numerous warning of this, but please explain one thing to me. If i am using BLC and shooting off the bench does the chamber temp not matter? Say that i wait 4-5 seconds between each shot and fire 200 rounds in one sitting the chamber is probably around 200-300 degrees? Does this not warm the powder up? |
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My experience with BLC2 and Hornady 55 ball has been very positive. I've gone through 16 pounds so far, in various combinations and loads. It meters so well when I use it for match loads, I don't even bother mass weighing the charges, but just use a powder drop.
With the Hornady 55 gr bullets, I found two sweet spot charges (for my gun). The milder was at 26.9 gr, and the hotter was at 28.0 gr. While the latest books list max loads at below 28.0 gr, my older books showed this to be a safe charge. so I wasn't too worried about trying it out - and have been pleased with the performance. Most of my loads are actually the 28 gr charge. As to its temperature sensitivity. I've seen it oft-repeated, but would love to see some first hand accounts. All I can say is I've never had a problem. |
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Doesn't matter, hot is hot, whether it's chamber or outside temp.
BTDT 'Borg ETA I started loading for the AR in 82, with BLC2. Worked up loads in the early spring (60-70 degs), when it got up to 90, every primer pierced and very, VERY flatened primers happened. By the way, I paid $139 for that first AR, new.  boy have times changed.
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Quoted:
My experience with BLC2 and Hornady 55 ball has been very positive. I've gone through 16 pounds so far, in various combinations and loads. It meters so well when I use it for match loads, I don't even bother mass weighing the charges, but just use a powder drop. With the Hornady 55 gr bullets, I found two sweet spot charges (for my gun). The milder was at 26.9 gr, and the hotter was at 28.0 gr. While the latest books list max loads at below 28.0 gr, my older books showed this to be a safe charge. so I wasn't too worried about trying it out - and have been pleased with the performance. Most of my loads are actually the 28 gr charge. As to its temperature sensitivity. I've seen it oft-repeated, but would love to see some first hand accounts. All I can say is I've never had a problem. This has been my experience with this powder. I run low 26 gr for my prvi 62gr plinking loads. Never an issue when it gets hot. I have some of that 846 to play with...but I may use it for my 308... |
| I experienced the very same thing the other day. No pressure signs on my .308 loads with BL-C(2) in 40 degrees but just the other day I went out and shot in 80+ temperature and primers were flattening bad and bolt was sticking. Not to mention this was on a long range rifle and groups at 500+ yards were twice the size they were 40 degrees or so cooler. |
| I use 26.5 grains of BLC-2 behind the 50 grain Hornady V Max bullet. I will tell you that you should not be using cci 400 primers. You should be using the cci 450 magnum primers for the ball powder. Back off of your load and start with even brass. Same brand etc..and use the magnum primers. This is if you have eliminated all of the other variables which could be opening up your groups. Hope this helps but ball powder is required by most manuals I use. |
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So i finally loaded up some rounds to test with this powder i bought last week and am supprised that the closer to max load i got the worse the groups got. So far with H335 and Varget, i have my best groups at Max. If anyone is interested here are my targets. I think i am going to load both the FMJBT and SP at 26gr BL-C(2) I just wish i had a Chronograph to see how fast they where going. I was rushed today, only had an hour and a half range time so i was unable to let the barrel cool off between each set of rounds. Does a hot barrel affect accuracy? All shots are with a 16" RRA middy 1n9 LC 11 Once fired brass CCI #400 primers [email=http://www.flickr.com/photos/66009430@N06/6885069714/]http://farm8.staticflickr.com/7121/6885069714_8e83d901de_b.jpg[/email] [email=http://www.flickr.com/photos/66009430@N06/6885070344/]http://farm8.staticflickr.com/7102/6885070344_5032870696_b.jpg[/email] [email=http://www.flickr.com/photos/66009430@N06/7031167727/]http://farm8.staticflickr.com/7074/7031167727_0616ec7ac8_b.jpg[/email] [email=http://www.flickr.com/photos/66009430@N06/6885071718/]http://farm8.staticflickr.com/7123/6885071718_1be2aef903_b.jpg[/email] [email=http://www.flickr.com/photos/66009430@N06/7031169015/]http://farm8.staticflickr.com/7221/7031169015_47b432d409_b.jpg[/email] [email=http://www.flickr.com/photos/66009430@N06/6885072982/]http://farm8.staticflickr.com/7050/6885072982_09e04cb360_b.jpg[/email] [email=http://www.flickr.com/photos/66009430@N06/6885073644/]http://farm8.staticflickr.com/7241/6885073644_2aec651de6_b.jpg[/email] Two things i do not understand here: 1. Why is it that the hotter my load went, the lower the POI was? 2. On group #9 what caused each POI to drop. Shot #1 is at the top and #5 is at the bottom. (i kep a mental note of each shot) I started to think it was because i did not allow the barrel to cool off, but my last group (#14) was fine, even though it was a different powder and bullet. Being a temp sensitive powder, would this be caused from being "warmed up" in the chamber before firing? Thanks for any input or remarks. Barrel heating up is my guess. My target rifle will do that if I start shooting too fast. Did you wait the same amount of time between shots? |
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