Illirian Engineering & Design

Welcome to Illirian Engineering & Design. Your home for Advice and Consulting on Architectual Design & Drafting as well
as Wildcat Cartridge Design for the AR-15 family of  Rifles for Hunting & Target/Competition matches. We are based here
in the Northeast and have  a satellite office in New Hampshire region of the United States .

While we have made many friends through our Architectual Drafting & Design services we also advise those who
are into the wildcatting of the AR-15 family of cartridges like the .223 Remington/5.56mm NATO based case design.

We offer advice & consultation for FREE in many cases as we believe that is what the American spirit is all about, and has
made America a true Icon of Freedom and Liberty throughout the World. I have had some people say to me your are "nuts"
for doing this for free... Nearly all of my drafting and design work is done by hand the old fashioned way in the classic tradition.
However, I am also working with and will also be developing computer generated blueprints via CAD (Computer Aided Design)
and drafting software. All work is done gratis (for free), however, donations are accepted if offered.

Our Engineering background stems from the many years of studious attention attained from the City University of
New York education system as well as many years of  private study, along with a short Internship with Tool & Die Makers
as well as working together with my Architect on my first multifamily house design. After that field of study was complete,
a steady request by close friends and family for Architectural Designs & Drafting work after seeing some of my blueprints
that were being made for a  small construction project.

This site will be mostly geared for Info. on the PCC design and related wildcat projects as well as consulting and advice
on the AR-15 Platform design etc.

The 6.5mm & 6.8mm PCC wildcat cartriges are based on the .223 Remington/5.56mm NATO cartridge case, and therefore
achieve a very similar design parameter as it relates to chamber pressure levels,bolt thrust levels,and overall cartridge
design etc. Chamber pressures were designed to kept to SAAMI/ANSI standards for the .223 Remington/5.56mm NATO.
The PCC case design is of the "Improved" style in which the case taper,shoulder angle,case trim length, case capacity, and
combined overall length (COL) were all optimize to give the great performance and accuracy possible.

The original Intent of the 6.5mm PCC design was to at least equal or exceed the Russian 7.62mm x 39mm round in power
levels in a AR-15 Rifle platform using the parent .223 Rem. case as the base for the cartridge, thankfully we have excelled
in the energy (power level) and accuracy  department vs. the 7.62mm Russian round. It was done BTW with much less
powder vs. the Russian round, for example, the 7.62 Russian case has a maximum case capacity of about 35 grs. vs 30-31 grs.
for the 6.5mm PCC round (non fireformed case). If you decide to use the fireformed case of your 6.5 PCC  you will get a maximum
case capacity of about 33.34 grs. of water.

The 6.5mm PCC cartridge has given us great overall performance (non fireformed) thus far, both in accuracy (most
loads are sub 1 MOA @ 100 yards) and maximum velocity ( 2,520 fps. with a 22"  poly. ss. bbl. length, using Speer 120 gr.
HotCor's). Terminal performance has also been great, my partner Paul (who has helped me with field testing and has
done a fine job with it) has just taken two Whitetail Deer w/ the 6.5 PCC round, one was a big Doe @ 242 yards and the
other a nice four point Buck @ 218 yards both through heavy wooded terrain using 100 gr. Nosler Partition rounds. 
Complete pass through with both animals (Buck and Doe) with the 6.5mm 100 grain Nosler Partition projectile.
Another big Buck (155 lbs. undressed) was taken in Upstate NY @ 110 yards through very heavy wooded terrain using the
120 gr. Speer HotCor SP, again complete pass through of the projectile with a massive exit wound near .700" 
Muzzle energy is in the 1,500 to 1,800 + ft/lbs vicinity with a 18" to 24" Bbl. lengths depending on the load used.

For those that purchase 6.5 PCC barrels here, they can have the throat custom cut  for COL to the owners desired load,
for example a: 123 gr. Sierra SMK load @ 2.300" COL (combined overall length) which is about max. mag length, all for free...

Thus far the best powder(s) for the 20" and longer barrels lengths are (medium slow burn rate powders): H335, H322,
Ram TAC, AA 2230, AA 2200. AA1680,  etc. Slower powders tend to be more bulky and less efficient.

For the shorter 16" to 18" barrel lengths try the faster burning powders like: AA 1680, AA 2200,Ram X-term., RL-7, H332 etc.
You may notice that many of the above powders are "ball" or spherical type powders, they have proven to be the most
effective and are  much less bulky (and thus more dense and pack better w/ better throw from powder dispensers). 

Current B/C (ballistic coefficients) G1's for the 6.5mm/.264 Caliber projectiles very from a low of .252 to a high of .636 !
Current S/D (sectional densities) are also Impressive at around .292 for the VLD rounds !

A 6.8mm PCC version is in the works and will offer a cheaper alternative to the to 6.8 SPC round for handloaders, performance
of the 6.8mm PCC should on par with a 16" Bbl. SPC using a 6.8mm PCC barrel of 18"-20" according to the ballistic computer
modeling.

This site is still under construction, so please be understanding...Pictures,Video Clips and Charts are In the following pages they 
ere listed on the top of this web page.

Thanks.

Updated on December 8, 2014