Hornady Press Release

[Ian M]

(Grand Island, NE) – Based on the beltless 375 Ruger, the 300 and 338 RCM’s are engineered to offer 300 and 338 Win Mag performance, but in a more compact package. A new generation of cartridge design provides unmatched ballistic performance, less felt recoil, longer barrel life, and superior performance at all temperatures, in a package that is well suited to all hunting environments and conditions any hunter may encounter. The 300 RCM is available in 150, 165 and 180-grain SST offerings. Each 300 RCM load exceeds comparative 300 Win Mag loads from a 20" barrel. Muzzle velocities for the 300 RCM are 3,170 fps, 3,030 fps, and 2,900 fps, respectively – from a 20" factory barrel. The 338 RCM is available in the newly developed 200 gr SST, and 225 gr SST offerings. Velocities for the 338 RCMs are 2,850 fps and 2,710 fps respectively, easily out performing the 338 Win Mag at equal barrel length.

[Nomosendero]

They say that these rounds outperform the 300WM & 338WM with equal barrel lengths, which in this case is 20". But, I would never have a 300WM or 338WM with a 20" tube, so it doesn't matter much to me. I read the G & A article, but they don't appeal to me, however a necked down 375Ruger might have, with a real barrel attached.

[Wild_Bill]

I believe that these will be like the rest off the new additions from Hornady and Ruger the velocity off factory ammo will be awsome but un obtainable to the reloader because aff special loading techniques and proprietary propelants. Like the 30TC its case capacity and shape are very similar to the 300 Savage but it exceeds both factory 308 and 30-06 ballistics this is because of the above mentioned propelants. So unless you are only going to use factory ammo they realy are useless to the handloader, as the performance will be a lot less this also could be a dangerous situation if Jo Blo has a chronograph fires factory ammo then tries to duplicate the velocity.

Cheers Bill

[CatShooter]

There are no secret "proprietary propellants" or secret loading techniques.

There is an "Off the shelf" propellant that fits every burning rate slot, for mid sized cases.

If they got the velocity, then you can do it also.


.

[Wild_Bill]

Contact Hornady and ask how to bet the propelants they usenfor their light mag and new cartridges they will tell you you can't. This is also in some of their advertising they have propelants made generally by St Marks powders and they are high energg and also highly compressed and not available to handloaders.

Just the facts.

Please note I havenhand loaded over a million rounds professionaly and have had access to powders not available to private individuals only businesses with an OEM number and registered as a commercial manufacturer.

Cheers Bill
Australia

Originally Posted by CatShooter

There are no secret "proprietary propellants" or secret loading techniques.

There is an "Off the shelf" propellant that fits every burning rate slot, for mid sized cases.

If they got the velocity, then you can do it also.


.

[Wild_Bill]

I have a question for you how do you load a 300 Savage capacity case to have greater performance than a 30-06? If you use conventional loading techniques with both the larger case will always win. So could you please explain it? as I obviously must not know what I'm talking about that's why I answered thw thread. Also Hornady has stated that the 30 TC can not be hand loaded to match the factory ballistics at this time as the propelants THEY USE are not available to the general public

Cheers Bill

[AJ Peacock]

Has anyone taken a 30 TC factory load apart to see how compressed it is etc.?

AJ