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Post by mosigdude on Jun 5, 2015 0:22:55 GMT -8
I got my BHW 264 LBC (20") barrel a few days ago and put the beast together in an upper that had been lapped true. I then "bedded" the barrel into the upper. I fired off a few test loads, took a handful of measurements and headed off to the load bench. This experiment was with a few different bullets (Hornady 123 SST, Nosler 123 Custom Comp and Sierra 120 Pro Hunter) in the 120-123 range and only Hodgdon's CFE223 Powder. My first objective was barrel break-in and second was load development
The best of the day was a 200 yd, 0.46" group (in this target) and worst was a 1.069" (hehe 69!) on a target not shown, ALL loads were sub-MOA, this seems like an easy caliber to load for! These loads are not burners as far as velocity goes but are usable in the high 2300's and low 2400's. Next up is working on velocity and tweaking the OAL, thank you BHW for another amazing barrel!
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Post by GLSHOOTER on Jun 5, 2015 5:32:24 GMT -8
Kind of makes you wish they built a 265 doesn't it? That is fantastic. Please, as a favor wander over to 68FORUMS and post that up in their Alternative Area. They need some pudding with proof in it. Greg
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Post by mosigdude on Jun 5, 2015 9:20:02 GMT -8
Will do! I have lurked over there a few times but hadn't registered until just now. As soon as they activate my account I'll post it up.
On a side note, velocities with this powder/barrel combination are topping out just below 2400 with the two 123gr bullets. My next round of tests will be with 8208XBR, I know max load is 28.5 but have also read on other forums where some with other brands of barrels are having to use heavy buffers, heavy springs, adjustable gas blocks and extra bolt carrier weights to keep the spent brass in the chamber long enough for the bullet to exit and barrel pressures to drop and, ultimately, to prevent brass failures at max loads with this powder. I am already running adjustable gas and a rifle buffer in a fixed stock. Have you found any of the other gizmos necessary? I'll be loading for this barrel (20") and also another 22" which will ship at a later time.
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BHW Bliss
Jun 5, 2015 10:37:52 GMT -8
via mobile
Post by GLSHOOTER on Jun 5, 2015 10:37:52 GMT -8
All I run is standard buffer, spring, M16 bcg and an adjustable gas block. I've never needed anything else.
Greg
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BHW Bliss
Jun 5, 2015 11:02:16 GMT -8
via mobile
Post by mosigdude on Jun 5, 2015 11:02:16 GMT -8
All I run is standard buffer, spring, M16 bcg and an adjustable gas block. I've never needed anything else. Greg Perfect! That was my plan unless it was common to have to do the other stuff also. I'm working the weekend and will resume load tests with 8208 on Monday, weather permitting.
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Post by wfa on Jun 5, 2015 14:22:21 GMT -8
All I run is standard buffer, spring, M16 bcg and an adjustable gas block. I've never needed anything else. Greg I know you shoot a lot of competition. Is there any advantage running the M16 BCG vs AR BCG? How about the adjustable gas block? TIA, Walt
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Post by GLSHOOTER on Jun 5, 2015 15:52:47 GMT -8
The higher mass of the M16 cuts down on the bolt opening sooner. That helps on handling pressure. It also has more forward inertia to chamber the round compared to an AR carrier. Both are a plus.
The adjustable GB lets you fine tune for specific loads and extends your choice in hand loads to various powders that would be too fast or higher port pressure to use with reliability. A luxury that costs virtually nothing when you go with a BTE adjustable.
Greg
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Post by wfa on Jun 6, 2015 5:50:54 GMT -8
The higher mass of the M16 cuts down on the bolt opening sooner. That helps on handling pressure. It also has more forward inertia to chamber the round compared to an AR carrier. Both are a plus. The adjustable GB lets you fine tune for specific loads and extends your choice in hand loads to various powders that would be too fast or higher port pressure to use with reliability. A luxury that costs virtually nothing when you go with a BTE adjustable. Greg It's always the details that will get you! I hadn't considered the FORWARD inertia. That may be the solution to my stiff feeding from the new(ish) ASC magazines. I wasn't aware of the BTE gas block until just recently which, of course, was AFTER all the parts were on hand. All of "the other" adjustable gas blocks required a second mortgage. If it holds up to competition it's clearly reliable over the long run. I guess I need to order one "just because".
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BHW Bliss
Jun 6, 2015 10:55:05 GMT -8
via mobile
Post by mosigdude on Jun 6, 2015 10:55:05 GMT -8
+1 on the vote for the BTE gas blocks, I've used several of the low profile models on several builds, great fit, finish and function! The price is amazing in comparison to the others out there as well!
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Post by wfa on Jun 7, 2015 4:48:08 GMT -8
"Out of stock"
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Jun 7, 2015 5:57:11 GMT -8
+2 on the BTE The micro clamp-on is very nice the price is nice works flawlessly what more do you want
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Post by wfa on Jun 14, 2015 4:57:37 GMT -8
"The higher mass of the M16 cuts down on the bolt opening sooner. That helps on handling pressure. It also has more forward inertia to chamber the round compared to an AR carrier. Both are a plus." I changed from an AR BCG to an M16 BCG. Feeding is now perfection from all of the magazines (which COULD just be from use, but I don't think so) and ejection is much more consistent. The brass no longer has body dents, just slight mouth dings.
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Post by mosigdude on Jun 14, 2015 10:44:21 GMT -8
I changed from an AR BCG to an M16 BCG. Feeding is now perfection from all of the magazines (which COULD just be from use, but I don't think so) and ejection is much more consistent. The brass no longer has body dents, just slight mouth dings. When I started using the redding S-Dies with bushings and stopped using an expander, I became more concerned with dings to the case necks. I found a quick easy solution. This one isn't the prettiest picture but it will illustrate what I'm talking about. I just cut a piece of rubber from a bike innertube to fit the brass deflector and use contact cement to hold it in place. Use acetone to clean both surfaces before putting the contact cement on. If for some reasson you ever want to take it off it isn't too bad to melt the glue residue with acetone but it holds securely enough that I've never had one come off unintentionally. I have several that have been on hunting (read: Drag through the woods, snags and brush) rigs for years. Anyhow, this solves most, if not all of the mouth dings.
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Post by bobatl on Jun 14, 2015 12:41:01 GMT -8
Did a similar thing on an over-gassed 223, before & after pics. Used what was in the house, a felt chair foot pad cut to shape, did the trick:
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Post by mosigdude on Jun 14, 2015 13:30:32 GMT -8
Those would be very handy to throw in a range bag in case one ever came off!
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