Barnaul 30-06 Ammo Draws Questions

MKS Supply offers the answer to the mysterious cartridge groove.

   Recently we received inquiries about Barnaul’s .308 Winchester and .30-06 hunting rounds. The .30-06 is an all American round once used by U.S. Forces as a military round but no longer. It is arguably one of the most popular and effective hunting rounds worldwide.

 

Note relief ring just above cartridge base.
The “mystery” is not really a mystery at all.

 

   The pressure generated by the .30-06 round is higher than other steel cased rounds the company makes. Steel cases are cheap to produce. However, since steel is much harder and less malleable than brass the overall steel case expands slower in the microsecond of gas expansion in the firearm’s chamber than brass cases.

   Engineers at Barnaul knew that to accommodate the higher pressure curve of the .30-06 round for that millisecond they needed to accommodate these higher pressures. So, they “simply” designed a slight round groove called a relief ring into the cartridge case near the base. The groove is roll pressed in, there is NO metal removal.

   Upon firing the additional pressure will be absorbed and reduced as the relief ring material is pressed out by the powder discharge basically duplicating the expansion of a brass case. Smart, simple, safe and well-engineered.

   Barnaul produces the .30-06 using strong polycoated steel cases for reduced cost. Some folks are afraid of steel cases.  Read the article linked here at Luckygunner.com ; in a bolt gun it would never cause the problems seen in semi-auto guns.  In short, reliability is as good as with  reloads.

   Barnaul is one of very few privately owned Russian ammunition companies who have been approved to supply their ammunition to the Russian Army. Their high standards and extreme quality control measures have also granted them the privilege to supply the Russian Special Forces with Barnaul’s high-quality ammunition.  Their ammo works incredibly well at an affordable price.

Colt Adds to the M2012 Line-up, SHOT Show 2014

In conjunction with Cooper Firearms of Montana, Colt, is expanding the M2012 bolt action rifle family with the introduction of two new models. The M2012MT308T and M2012LT308G/M2012LT260G.

 “The durability and accuracy provided by the M2012 bolt action rifle family is outstanding,” said Joyce Rubino, Vice President of Marketing for Colt. “These new ‘crossover’ rifles transition easily from target shooting at the range to long-range hunting in the field.

All M2012 models feature a custom fluted, match grade barrel and a single stage, adjustable Timney trigger. A signed, serial numbered and dated test target is included with each rifle as a testament to its accuracy.  The new variations are available in 260 Remington as well as 308 Winchester.