Precision build

[gunmutt]

Okay so my first choice was a bust. YHM ruid my barrel and I am not waiting 6-8 months for a replacement. So back to the drawing board.
I was going with an 18" but now a 20" is more in line with my goals (small groups out to 600-700 yards. And don't ask why .223)
So now I am down to twist, profile, and muzzle.
Twist should I stick with the 1-8 or step up to the 1-7? I plan on 68-77 grain boat tails.
Profile should I use bull, semi-bull, or standard. Weight is not a issue. I got an atlas bipod to keep it supported and this is not an offhand rifle. Mostly prone.
Muzzle. I know they don't do much so I am thinking target crown and be done. The only reason is a device also helps to protect the crown.
Please get me some input soon as I plan to take advantage of the current deal going on.
Chamber wise is the BHW chamber good enough compared to a match chamber.
This whole rig is to help me learn balistics and shooting techniques as I save for a long range rig

[GLSHOOTER]

Bull 20" rifle gas Target crown 1:8 Piece of cake at 600 yards. The 77 Noslers are great. Match chamber? Based on what is being shot you can't do any better than these.

Greg

[gunmutt]

Yeah that is kinda what I was thinking. But why 1-8 over the 1-7? I have other rifles for the lower grain bullets and I want a barrel for the heavier grain pills. Maybe even throw in some vld bullets into the mix.

[GLSHOOTER]

Jan 22, 2016 18:32:21 GMT -8 gunmutt said:

Yeah that is kinda what I was thinking. But why 1-8 over the 1-7? I have other rifles for the lower grain bullets and I want a barrel for the heavier grain pills. Maybe even throw in some vld bullets into the mix.

If it's pure target then a 1:7. It will not handle the 90's but it might do the 77's and 80's a tiny bit better. I use mine to shoot light ones on prairie dogs also so the 1:8 was my straddle the fence twist for my purpose. I shoot a 24" gun because I have 1000 yards available and a 20" just wouldn't do.

Greg

[gunmutt]

Should I go with the 22" to gain a little more? My range has a maximum of 1250 so I have more room than I would ever need. This gun is to help me with technique before I move up to say a 6.5-284 beast of a bolt gun. Basically learn wind and figuring shooting solutions
.223 has a higher round count than what I want next would

[GLSHOOTER]

Jan 22, 2016 18:50:25 GMT -8 gunmutt said:

Should I go with the 22" to gain a little more? My range has a maximum of 1250 so I have more room than I would ever need. This gun is to help me with technique before I move up to say a 6.5-284 beast of a bolt gun. Basically learn wind and figuring shooting solutions
.223 has a higher round count than what I want next would

In lay down target guns I prefer the longest I can get. Velocity is your friend. All my LR AR's are 24" because I couldn't get a 26".

Greg

My opinion...not asked for..run the numbers on a 95 SMK 6MM at 2950 against your big boomer at 1000.

[gunmutt]

I am also thinking on a .243 but that is down the road.

[GLSHOOTER]

Jan 22, 2016 19:17:16 GMT -8 gunmutt said:

I am also thinking on a .243 but that is down the road.

243 LBC will do unreal things for such s little cartridge and it won't eat barrels like a 243 Winchester or that 6.5.

Greg