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223 Wylde / 5.56mm
roderickp
Member Posts: 80 ✭✭
What is meant by the 223 Wylde? What is the difference between this and the 5.56mm?
Comments
HOLLIGER ON .223/5.56 CHAMBERS
Here are just a few of the chamber reamers that I have prints for. There are hundreds of .223/5.56 chamber dimensions and I always get a kick out of people arguing over whether a rifle has a .223 or a 5.56 chamber. Just because it has a .223 chamber, does not mean it's the same as another rifle with a .223 chamber. Both reamers may say .223 on them, but they may be very much different. Also, everyone just knows the .223 is smaller than the 5.56, well the 5.56 Target chamber is smaller in about every dimension than the .223 Wylde.
The COAL for the 80 grain SMK is an ESTIMATE based on bullet empirical data and from chamber prints. The actual COAL in your rifle may be different, even though it has that specified chamber. The number is supplied to help identify a chamber if it is unknown or as an aid in selecting the proper chamber reamer (bullet seated further out means you can get more powder in the case).
Chamber / Freebore / Lead Angle / 80SMK OAL/ Comments
5.56 Target .0566 1 deg,13 min 2.465 This was designed by a C. Hildebrandt at Savage. I believe it is used in the savage .223 rifles. I do not have this reamer, but it should work well for HP.
.223 JGS#514 .025 3 deg,10 min 2.435 I believe this is used by Krieger and Mike Bykowski. I use it for slow twist varmint uppers but I think it is a little short, and too steep of a lead for HP.
.223 Wylde .0619 1 deg,15 min 2.475 Designed by Bill Wylde. Shoots everything good, and has slightly generous body dimensions for reliability. Eats anything you put in it.
.223 Holliger .106 1 deg,15 min 2.530 Designed for the 90 JLK. The longer throat allows a little more velocity.
5.56 CLE .025 1 deg,30 min 2.450 Of course we all know Frank's rifles shoot just fine!
5.56 Bushmaster .0250 1 deg,30 min 2.450-
2.475 Info from Bushmaster (thanks!). These are one of the best out-of-the box barrels, and handle up to 80 gr bullets no problemo.
Best.
these chambers, they seem to love 68-69 grain match bullets. 1-7" or 1-8" twist is best to get the most from the full spectrum of bullets IMHO
As Nononsense says you can use 556 in a wylde chamber. The throat is alittle shorter then a nato 556 chamber. it is designated a match chamber by some manufacturuers but as far as I can tell it basically a hybrid chamber takeing whats best from the canandian nato spec 556 chamber and a SAAMI spec 223 chamber and mixing them to create a chamber that supports the cartridge in the right places for consistant accuracy and looser tolerances in others critical for reliability and consistantcy.
these chambers, they seem to love 68-69 grain match bullets. 1-7" or 1-8" twist is best to get the most from the full spectrum of bullets IMHO
Pal...you need to get a grip. NN, even gave the dimensions, and the Wylde chamber is one of the largest, including the throat. Essentially, the Wylde chamber was made to have the longest throat of all, except the HOLLIGER, which was designed specifically for 90 grain JLK bullets. The 1 in 7 is best for the 80-90 grain bullet, and the 1 in 8 works best for 69-80 grain, the 1 in 9 works for the 50 to 62 grain. Since most ball ammo is 55 or 62 grain, a 1 in 9 twist is preferred. However, for those match shooters who are going out to 600 yards and beyond, a 1 in 7 or 1 in 8 is best for the 75 to 80 grain and above bullets.
Best
Quote from RRA:
"The .223 Wylde chamber was designed as a match chambering for semi-automatic rifles. It will accomodate both .223 Rem and 5.56mm NATO ammunition. It is relieved in the case body to aid in extraction and features a shorter throat for improved accuracy."
the throat angle of the wylde is 1.25 degrees while most .223 & 556 match chambers are in the 2.50-3.00 range.. wouldnt that make a difference in its OAL of the throat? It is the only reason why I can figure folks like RRA who actually use the barrels claim that the throat is shortened anywho. how does freebore measure into a chambers OAl length?
Quote from RRA:
"The .223 Wylde chamber was designed as a match chambering for semi-automatic rifles. It will accomodate both .223 Rem and 5.56mm NATO ammunition. It is relieved in the case body to aid in extraction and features a shorter throat for improved accuracy."
Look at the actual chamber dimensions, and you can see who is blowing smoke in their advertisements. Just because someone blows smoke, does not mean that you need to. The actual chamber spec. dimensions are in Nononsense's post above. If you need a tutoring session on how to read them, I would be glad to help...just ask.
Best
EDIT 1
QM,
The actual free bore length is the critical one of the chamber dimension. That is what allows one to seat the bullet out as far as possible to utilize the case capacity to the fullest. The COAL is the Cartridge Over All Length, and in this case it used the Sierra 80 grain Match King, hence the 80SMK. The 1 degree, 15 minutes, or other various dimensions, is the angle of the leade from the free bore to the rifling lands. This has minimal effect on COAL. BTW, free bore can be best described as the distance from the case mouth to the leade. I will PM you with my phone number for added assistance if you need it.
Best
EDIT 2
quote:Thank You, If I ever get some custom spec chambering done, or somesuch, I could use some professional assistance in getting everything right.
QM,
Nononsense is a very reliable source of information, if you ask him. Ask him with the attitude you are not only willing to, but want to learn. I have learned enough from him, that I even felt comfortable enough to grind my own reamer's for my 300 RUM, and 7mmRUM rifles...of course only using the right equipment to grind, and measure with.
Best
quote:Originally posted by quickmajik
the throat angle of the wylde is 1.25 degrees while most .223 & 556 match chambers are in the 2.50-3.00 range.. wouldnt that make a difference in its OAL of the throat? It is the only reason why I can figure folks like RRA who actually use the barrels claim that the throat is shortened anywho. how does freebore measure into a chambers OAl length?
Quote from RRA:
"The .223 Wylde chamber was designed as a match chambering for semi-automatic rifles. It will accomodate both .223 Rem and 5.56mm NATO ammunition. It is relieved in the case body to aid in extraction and features a shorter throat for improved accuracy."
Look at the actual chamber dimensions, and you can see who is blowing smoke in their advertisements. Just because someone blows smoke, does not mean that you need to. The actual chamber spec. dimensions are in Nononsense's post above. If you need a tutoring session on how to read them, I would be glad to help...just ask.
Best
acutally that would be helpful.
free bore is .0619. 1 degree and 15 minutes is where I get confused. 2.475 is the overall length.
Could the neck length & throat have been shortened to accomodate more common bullet lengths with RRAs barrels? If the original was designed aroun 80-90+grain bullets it is atleast somewhat logical isnt it, considering the rifles are aimed at varmint hunters.
EDIT
Thank You, If I ever get some custom spec chambering done, or somesuch, I could use some professional assistance in getting everything right.