65-Creedmoor
Since 1976

New Rifle Calibers




Items Per Page
.223 Rem, .223, 5.56, 5.56mm Nato, 5.56x45mm
1.745 - 1.750 O.A.L.
The .223 Remington is one of the most widely used centerfire cartridges today. Tracing its roots back to the .222 Remington, the .223 was designed to achieve certain ballistics for military use. The .223 Remington, when in its military form, is known as the 5.56x45mm NATO. The differences between the two being the pressures that they are loaded at and the chamber in the firearm itself.

The .223 has established itself as an excellent varmint and target caliber. It dominates all other rifle calibers in competitions such as 3-gun, and has a dedicated following in several other sports due to its low recoil and accuracy potential. Those two attributes coupled with good velocity allow it to excel as a varmint gun also.

When loaded at .223 Remington pressures, our brass is safe to use in any firearm chambered for .223 or 5.56x45mm. If loaded to 5.56 pressures, you need to use firearms labeled for use with 5.56mm. It can be unsafe to fire 5.56mm ammunition in firearms with a .223 Remington chamber.

Box Size:
•  250 ($62.50)
•  500 ($115.00)
•  1000 ($210.00)

Status: Available Now

.243 Winchester, 243, 6×52mm
2.033 - 2.038 O.A.L.
Introduced in 1955 by Winchester, the .243 Winchester is one of the most popular and versatile cartridges available.  Derived from the .308 Winchester, the .243's low recoil and flat trajectory make it an excellent all around cartridge.  Due to a wide bullet selection being readily available, the .243 can be applied just as well on the shooting bench looking over prairie dog town as it can waiting for a whitetail from 15’ up a tree.  The 243’s accuracy potential is excellent making it a popular choice of competitive shooters.

Box Size:
•  250 ($124.00)
•  500 ($228.00)
•  1000 ($416.00)

Status: Available Now

6.5mm CM, 6.5mm Creedmoor
1.908 - 1.912 O.A.L.
The 6.5 Creedmoor was designed as a target caliber in 2007 by Hornady but has become an extremely popular hunting caliber as well. While it isn't as long as some of the other 6.5 caliber short action calibers, such as the .260 Remington, the Creedmoor utilizes a 30° shoulder and very little body taper to help it achieve similar ballistics. The shorter length also gives it more versatility as far as bullet seating depth is concerned. Almost every major rifle company offers either a bolt-action rifle or a modern sporting rifle in the 6.5 Creedmoor due to its versatility and inherent accuracy.

Our 6.5 Creedmoor brass uses a Large Rifle Primer. This is the standard for this round and it is what many prefer due to its reliable ignition no matter what temperature you are shooting in or the burn rate of your powder. For the Small Rifle Primer version, please see our SR 6.5 CM case.

Box Size:
•  250 ($125.00)
•  500 ($235.00)
•  1000 ($430.00)

Status: Available Now

Small Primer 6.5 Creedmoor
1.908 - 1.912 O.A.L.
This is our Small Rifle Primer version of the 6.5 Creedmoor. The 6.5 Creedmoor was designed as a target caliber in 2007 by Hornady but has become an extremely popular hunting caliber as well. While it isn't as long as some of the other 6.5 caliber short action calibers, such as the .260 Remington, the Creedmoor utilizes a 30° shoulder and very little body taper to help it achieve similar ballistics. The shorter length also gives it more versatility as far as bullet seating depth is concerned. Almost every major rifle manufacturer offers either a bolt-action rifle or a modern sporting rifle in 6.5 Creedmoor caliber due to its versatility and inherent accuracy.

Our SR6.5CM brass uses a Small Rifle Primer. Many target shooters prefer the Small Primer for the increased consistency and accuracy. While other small pocket manufacturers use a smaller than standard flash hole, Starline uses our standard .080" flash hole, as we feel that it gives better ignition with some of the slower powders and in colder conditions (and you won't be breaking off decapping pins either?)The Small Primer version also maintains primer pocket size much better than the large primer version under higher pressures. For our Large Primer version please see our 6.5 Creedmoor case.

Box Size:
•  250 ($150.00)
•  500 ($280.00)
•  1000 ($510.00)

Status: Order Now - Ship Date: 07/26/2017

Thank you for your patience. Your order is very important to us. We are experiencing extreme levels of demand due to the popularity of our newest product offerings. At this time, we are asking customers to place orders now to assure the quickest shipping date possible. All orders are shipped based on the date of order. If shipment of your order is held due to back-order, the pre-authorization amount of your order is put on hold and reserved against the credit limit of your card and will remain there until shipment is made and your card is charged. Please place your order now and be assured we will fill it as quickly as possible with the high-quality unprimed brass you expect from Starline. Thank you for trusting Starline.


6.8mm Remington SPC, 6.8 Remington
1.674 - 1.679 O.A.L.
The 6.8 SPC was designed for the military as a cartridge that landed between the 5.56mm NATO and the 7.62mm NATO to be used in the AR-15/M-4 platform. It loses very little magazine capacity versus the 5.56mm (25 vs. 30 rounds), but has better knockdown power without much more recoil.

This caliber works very well in short barreled rifles and is an easy conversion for an AR-15, requiring only a barrel, bolt, and magazine swap.

For someone looking for an AR-15 for hunting, this caliber is a logical choice, especially for recoil-sensitive shooters.

Our brass is safe to use in both 6.8 SPC and 6.8 SPC II chambers.

Box Size:
•  250 ($99.00)
•  500 ($185.00)
•  1000 ($350.00)

Status: Out of Stock/No Backorders at this time
Click button below for notification of availability.

 
.300 AAC Blackout, .300 BLK, 7.62x35mm
1.356 - 1.360 O.A.L.
The .300 Blackout is based off of a shortened 5.56x45mm case that is necked to .30 caliber. For AR-15 platform rifles and pistols it only requires changing the barrel to go from 5.56 to .300 Blackout. The Blackout's main purpose is to be used at subsonic velocities in suppressed firearms. Many bolt action and single shot rifles are now being produced in this caliber as well.

Box Size:
•  250 ($70.00)
•  500 ($130.00)
•  1000 ($240.00)

Status: Available Now

.308 Winchester, .308, 7.62mm Nato, 7.62x51mm
2.002 - 2.009 O.A.L.



The venerable .308 Winchester has made quite a name for itself since it was first introduced in 1952. The .308 and its military equivalent, the 7.62x51mm Nato, is a very efficient cartridge that has excellent ballistics, while still being fairly easy on the shoulder. That, and its inherent accuracy have kept it thriving as both a competition and hunting caliber.

Box Size:
•  250 ($116.00)
•  500 ($199.00)
•  1000 ($376.00)

Status: Available Now

(.338-08**)
1.998 - 2.003 O.A.L.
One of the newest members of the .308 Winchester family, the .338 Federal was introduced in 2006 by Federal and Sako. It is capable of acheiving the same muzzle energy as some magnum calibers with less recoil.  It also fits in standard length short action rifles and AR-10's without sacrificing magazine capacity.  It hits harder than the .308, and shoots flatter than the .358 Winchester, making it an excellent choice for a close to mid-range hunting caliber.  One thing to consider when selecting hunting bullets for the .338 Federal is that most bullets available in .338 caliber were designed
for higher velocity cartridges.  Generally bullets under 200 grains or ones specifically designed for it are your best option for hunting.  Check with your bullet manufacturer of choice for their recommendation.
**Not all .338-08 wildcats were chambered the same and may not headspace correctly with factory .338 Federal brass or ammunition.

Box Size:
•  250 ($145.00)
•  500 ($270.00)
•  1000 ($500.00)

Status: Available Now

8.8x51mm
2.003 - 2.008 O.A.L.
Based on the .308 Winchester, the .358 Winchester was introduced by Winchester in 1955 for use in lever and bolt-action rifles.  While it had not seen the widespread popularity as the other .308 -based cartridges, its brush busting capability still makes it an excellent choice for hunting any of North America's big game.  With the recent rise in popularity of AR-10 style rifles, the .358 Winchester is starting to be chambered in it because the .358 gives the AR-10 just a little more thump than the .308 Winchester.

Box Size:
•  250 ($150.00)
•  500 ($285.00)
•  1000 ($540.00)

Status: Available Now

2.210 - 2.215 O.A.L.
The 444 Marlin was introduced in the mid- 60's to give their model 336 Levergun a boost in horsepower.  Over the years the .444 has been offered in a number of rifles and even a few pistols. It is another caliber that is seeing new life due to the changing game laws in many states allowing straightwall cartridges for deer hunting where they were previously limited to slug guns and muzzleloaders.

Box Size:
•  250 ($150.00)
•  500 ($280.00)
•  1000 ($540.00)

Status: Available Now

1.693 - 1.697 O.A.L.
The 450 Bushmaster was designed as a close range, big bore hunting caliber for the AR-15 platform.  As with most AR cartridge conversions, it only requires swapping out the upper receiver. With the introduction of some new bolt action rifles in this caliber and many states changing game laws allowing straightwall cartridges for deer hunting, the  .450 Bushmaster is enjoying a surge in popularity.  Ruger now offers their American Ranch and Gunsite Scout bolt action rifles chambered in the .450 Bushmaster caliber.  This cartridge utilizes the common .452" diameter bullet, reloaders can use bullet weights anywhere from 160-350+ grains.

Box Size:
•  250 ($167.00)
•  500 ($309.00)
•  1000 ($593.00)

Status: Available Now


Items Per Page