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Spring build 243


Albroswift

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I built a bench type 243 worked out well. started with aero u & l . krieger made the 24", 10t barrel, 936 adjustable gas block. jp high pressure bolt, and lite mass carrier. has geissele saa-e trigger. a2 stock, aero extension and spring. leupold 6-24x50 scope. used it in south Dakota last spring for prairie dog hunting. shoot 75gr v-max. no recoil. do have a brake on barrel, can't remember brand. we mostly shoot in the 4 to 6 hundred yard range. some out to 8 and 9 hundred. it weighs 13lbs 10oz. would send picture but haven't figured that out

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15 hours ago, Albroswift said:

18" looked like the longest Wilson? I was thinking more like 24". Is the 1:10 good for 75gr to 95gr bullets?

If it wasn't, WC wouldn't be making it.  They get barrel twist rates right.  Call them and ask about it.  :thumbup:

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15 hours ago, Albroswift said:

18" looked like the longest Wilson? I was thinking more like 24".

I'm so done with benchrest barrel-dream guns, where they tell you that you have to have a 32" barrel to even be accurate...

If someone offered an 18" barrel for my .260 Rem, I would have done that, but the shortest that I could find was the WC 20" barrel - back then.  Now, LaRue does an 18", but the shortest they did when I built mine was 22".   I don't have too many precision 5.56 ARs with anything more than an 18" barrel.  Well, I have 2.  That aren't 18".  I have 3 x 18" of them, and one 16" of them.  Barrel length doesn't mean they're not accurate...

"Accuracy" isn't barrel length.  Accuracy is what you build.  It's either accurate, or it's not.  Barrel length is only muzzle velocity, nothing more.  It's either an accurate gun, or it's not.  You can shorten the barrel - and it's still an accurate gun.  You might lose muzzle velocity, but you'll never lose accuracy.  You just lose velocity - and that means you have more drop to account for, at distance.  Doesn't mean it's any less accurate.

My most badass example of this is 6.5 Grendel.  I have a heavy 18" barrel SPR-type gun (It's actually a BA SPR-Profile Grendel barrel) that drops 8.5 mils at 850 yards (2534fps), and then I have a 12.5" Grendel, Govt profile Faxon barrel that drops 10.0 mils at 850 yards (2369fps).  The 16" Grendel Mod H gun (BA 16" SPR Profile) drops 9.0 mils at 850 yards (2475fps)...  All are "accurate" and can do it, every time - one has less drop than the other, and the other, because of more muzzle velocity. Same exact load, for all three.

Barrel length doesn't directly equal accuracy...  Accurate guns equal accuracy...   :thumbup:

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8 hours ago, 98Z5V said:

Barrel length doesn't directly equal accuracy...  Accurate guns equal accuracy...  

Agreed. I would also think however that as the velocity increased (without loosing accuracy) the shorter flight time would reduce the effect other variables, wind, distance, altitude, etc.

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28 minutes ago, Albroswift said:

Agreed. I would also think however that as the velocity increased (without loosing accuracy) the shorter flight time would reduce the effect other variables, wind, distance, altitude, etc.

The extra velocity will add some distance before going transonic. The extra weight will make the rifle more stable for spotting your rounds. Personally I prefer shorter stuff but have and will build some longer barrel rifles just to have the option at hand for friends and family.

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4 hours ago, Albroswift said:

OK so now long barrel questions,  with 243,  rifle length gas, or maybe rifle +2?

High pressure bolt or 308?

1:10 good for 100gr bullets,  or go to 1:9?

Thx.

 

mine as stated is 24" I went with rifle length w/adjustable gas block. on the 243 as stated I went with h/p bolt. that said I just put together a 260 rem. and went with std 308 bolt. as far as twist, what are you going to do with it. a 243 in the lighter bullets is quite capable of over rotating them with std 1:10 twist, heavy bullets of coarse need more twist

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