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This e-mail from Holland's Long Range this morning had me going 100 percent. hilbily





REVOLUTIONARY NEW CARTRIDGE



7.7 MM TOMCAT



PATENTS APPROVED in 2023



We are happy to announce the issuance of our

patents (USPO #6679-321-44789F - #6760-4491-33984B) for the NEW 7.7mm TOMCAT long-range cartridge utilizing solid fuel propellant technology. This has been a 52-month project in collaboration with LAPUA, DUPONT POWDERS, FEDERAL

PRIMERS, and SWISS DEFENSE BULLET CORP.



A shoulder-fired, long-range sporting cartridge that

exceeds all past performance standards will soon be

available to the shooting public, as well as select

military units around the world.



While many consider the 7.7mm caliber to be the

optimal bore for mild-recoiling long-range work, there were several obstacles that needed to be overcome in order to produce a practical cartridge that lives up to the caliber’s potential.



DESIGN PARAMETERS



First, the cartridge had to be functional in a long

action with a magazine box of 3.800 inches.



Second, muzzle velocity needed to approximate

3600 FPS using a 200 grain bullet with a G-7 BC of

.490, while keeping recoil levels below 28 foot-lbs.



Enter SWISS DEFENSE BULLET CORP., which is

primarily a defense contractor for the European

market. We had difficulty getting them on board due

to the UKRAINIAN war and supply-chain difficulties.

Once contracts were signed and a hefty deposit was

paid, however, we were off and running.



The finished product was a 200-grain masterpiece of

gravity-defying, wind-bucking aerodynamics that

leaves one speechless. It features a 15-degree

rebated boattail design, a wasp-shaped straight

section (similar to the Herters design from decades

past), and a user-friendly tangent ogive.



Jacket material is a proprietary blend of molybdenum and cupro-nickel, which is Teflon 3Z infused (reducing friction, minimizing fouling, and adding roughly 100 fps. more velocity than a conventional copper jacket). The core is a proprietary blend of lead, molybdenum, and cobalt powder. This combination allowed us to achieve a perfect center of gravity on this 1.437-inch-long bullet.



Third, a case had to be designed so that barrel life

was decent, given the previously mentioned

performance standards. Test barrels have gone

3200 rounds; accuracy remains less than .5 MOA.



LAPUA was responsible for case development.

Again, we had delays due to the conflict in

UKRAINE. They were, however, able to keep delays within reason, given the overseas conflict. Case head

dimensions were .535, case OAL was 3.00 inches,

shoulder diameter was .490, shoulder angle 36

degrees, and a neck length of .410, which aids in

convergence angle efficiency and contributes to

longer barrel life.



Fourth, since traditional propellants were unable to

achieve these results, a suitable alternative had to

be found. This proved to be the most difficult task of

all. With a grant from a US defense contractor (whom I can't disclose), we joined efforts with DUPONT to

produce a solid Duplex-Based propellant ignited by a

smaller charge of proprietary powder. The ratio of

burn rates in the solid propellant was erratic and

caused extreme pressures in load development.



HP WHITE laboratories did the initial testing (we

destroyed several actions in the process). However,

once the precise ratios of the different burn rates

were established, we were able to achieve a MV of

3580-3620 FPS with a 200-grain bullet. Pressure

testing was rated at 62,000 PSI from a 26-inch

barrel.



I am pleased to announce that LOADED ammunition

will be produced by LAPUA and available through

numerous wholesale suppliers in the US.



Ammunition cost is expected around $85-90.00 for a

box of 25 cartridges.



I have licensed JGS, CLYMER, and HUGH

HENRIKSEN to produce chambering reamers for

licensed gunsmiths around the country.



Barrels will require a 7.3-inch twist; to obtain

specified velocities we recommend a barrel length of

at least 26 inches.



If you are looking for the ULTIMATE long-range

cartridge look no further than the 7.7mm TOMCAT.



Ballistic DATA:



Muzzle velocity 3600 FPS;



G-7 BC .490; Elev. 1000' Temp. 59 degrees, Humidity 50% utilizing a 200yd. zero.



Drop at 1000 yds. 12.5 MOA; Wind Drift 2.25 MOA;



This amazing combination produces 1340 Foot-lbs. of energy at 1400 yds.



Performance testing on game animals will be done this August in South Africa. I've purchased 200 cull permits for testing and evaluation. Willing participants will include, kudu, eland, wildebeest, gemsbuck, zebra, and waterbuck.



I expect the first container of ammunition to hit US

shores around November 5th. We are limiting

purchases to 500 rounds per customer to gain as

large of a market share as possible.



Stay tuned for more details via the NEWSLETTER.



Ron Spomer of SPOMER OUTDOORS is expected

to do a YOUTUBE video of this new cartridge as

soon as the snow melts at his off-grid Hacienda in Malad, Idaho. (sometime in late June early July)



In the meantime enjoy our April Fools Day spoof from Hollands Shooters Supply.



Be safe, stay healthy, and shoot straight.


There is hope, even when your brain tells you there isn’t.
– John Green, author
 
Posts: 16367 | Location: Sweetwater, TX | Registered: 03 June 2000Reply With Quote
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