SAAMI vs Wylde chamber

[Viperdoc]

In my attempts to maximize accuracy out of my 223 AR, I have decided to get a zero free bore custom reamer, to enable me to vary seating depth and therefore bullet jump.

I talked with PTAnd G, and they suggested a zero free bore Wylde reamer for an AR versus a SAAMI zero free bore. I was given the impression they were the same chamber dimensions, but later learned elsewhere they are not.

I have had no problems with three other sAAMI chambered riles regarding function, but understand the Wylde is larger in the shoulder and body.

Will the larger chamber hurt accuracy, which is what I am going for?

 

[kentuckytroutbum]

Viperdoc-

To the best of my knowledge, they are significant differences between the Wylde and Saami 223 chambers.
I can't address the specific differences, but the Wylde has been touted as a more accurate chambering.
Bill Wylde, a 223 competitive shooter, developed the chamber design to maximize the accuracy of AR's to be shot in NRA HP XTC matches out to 600 yards.

When I started to build my AR for Service Rifle class, I had Steve Saturn make me a 20" s/s bbl with a Wylde chamber, and a 1:8 twist. After developing an accurate load, the rifle has proven to be accurate out to 600 yds. It may be accurate past that yardage, but I have not fired it in competition at longer ranges. Since it is very accurate at 600 rds, with iron sights, I believe that it would be accurate at even longer distances.

In summation, I think the Wylde chambering would be an excellent choice for an AR.

Bill

 

[gtl1946]

RRA uses the Wylde chambering on their factory AR's and with factory triggers(5-8 LBS !!!) but scoped,handloads,and shooting from a bench 1/4-1/2" groups are not that uncommon. The factory triggers were all replaced w/RRA's Nat. Match trigger and tuned to a 2-stage total poundage of 3 1/2 lbs. IF it could shoot that well before they should do it easier now. I DO feel that the Wylde chamber had a lot to do with accuracy. PS. These barrels are just the regular factory barrels. Check into it.

 

[Larryh128]

#1 on the Wylde. I looked into both & went with the Wylde & went from building one to a stock Rock River with the match trigger. VERY accurate rifle right out of the box. Only downside is that your reloads aren't probably not going to chamber in a reg sammi chamber. Sub- 1/2 moa .

 

[dan06]

http://www.radomski.us/njhp/cart_tech.htm

check this link out I found it helpful on the chamber spec question when i bought my upper

 

[Viperdoc]

I am not going to use this gun for high power, and will not single load heavy bullets. I am looking for a short throat, not a long one as typically found in a "standard" Wylde reamer, since I want to shoot out of the mag with min jump.

I do understand that the shoulder and body of a Wylde reamer are bigger than SAAMI. Is this true? Will this extra expansion decrease accuracy (in general), and decrease brass life?

 

[gtl1946]

If you're going to have this done you'll be interested in a reamer . Call Pacific Tool and Gage and ask for Dave Kiff ,the owner, and ask him your question or what he'd recommend. Dave has forgot more than most of us know--great guy to deal with.

 

[Viperdoc]

I did call PT and G, and they called it a Wylde chamger with zero freebore, which is what I ordered, only to learn later that there is a difference between a Wylde in the case and body that is larger than SAAMI, and I am concerned about potential loss of accuracy and brass life, when all of my other standard 223R SAAMI chambered AR's functioned fine.

 

[AJ172SBCT]

Some numbers

http://ar15barrels.com/data/223-556.pdf

Jacques

 

[rich44]

Viperdoc
I have a AR built by Mike Milli of Dtech with a Shilen SM 8 twist barrel with a Wylde chamber I also have a 223 bolt gun same barrel same chamber they both shoot extremely well and both with bullets from 55gr to the 80gr SMK and I have not noticed any shorter brass life I shoot Lapua in the bolt gun and WW in the AR

 

[Larryh128]

I have brass that has been loaded close to 20 times in my AR-Wylde chamber. Brass holds up great & accuracy is superb. This is strictly a varmint/culling rifle. 1-8 twist will do about anything that you want.

 

[Viperdoc]

OK- ordered a reamer from PT&G, a 223 Remington match chamber with a zero freebore, and a new barrel from Krieger with Varmatch taper and a 9 twist. Not going to use this for high power shooting, but will use it for PD gun. Hope to shoot 50-69 bullet range. Short throated to shoot out of the magazine just shy of lands.

Personal goal- to regularly shoot five shot groups off a rest in the 0.3 (or better) range consistently out of an AR. Does anything think this is achievable?

 

[Minesweeper3433]

Yes it is achievable. Call Mike bryant and ask him about his AR15.