CAUTION: The following post includes loading data beyond or not covered by currently

[golfballshootr]

30TC load questions, primer and powder.

I have checked numerous sources, and have been unable to locate anything for it. I have 4 boxes of factory loads left, and 5 boxes of new brass. I have just recently started trying to find a load for it in any of the manuals. Nada, zip and zilch.

So, here is my question, in more than one part; with some info behind the question.
I am using Superformance powder, also which I cannot find any data for, and started with 47gr working up to 50gr of powder with 150 SST bullets.
47grs gave me an average of 2289fps with an SD of 87.1. 48gr gave me 2477fps with an SD of 11.9. 49gr gave me 2,534fps with an SD of 41.8. 50gr gave me 2,635fps with an SD of 9.1. I skipped all of the 1/2gr increments for saving space. All shot strings through a Caldwell chronograph. All loads with CCI BR2 primers.

First, does anyone have experience loading for the 30TC? I found an old post that had no replies.

Second, what are the benefits, or caveats, if I switch to a magnum primer versus the CCI Br2? For the slow burn powder? I personally always use the primer recommended, but in this case, there is none.

I know the 30TC never caught on, which is why I bought the brass, but I like the rifle like an ugly puppy, so I have kept it since being purchased new. I am curious on the points of the Superformance powder, I have a little over 4lbs left since the run up of the test loads and before I switch to the magnum primers. I know the powder is slow, slow on the burn rate chart, and I can, if all else fails switch over to Varget and work up with it.

 

[243winxb]

Hornady

Have you contacted Hodgdon for load data using Superformance powder? I would start there or just change powder, using one on the Hodgdon website. Plus i would forget about trying to reach the Hornady velocity. Hornady seems to have a need to always be the fastest and best. At the same time, not really caring about you safety. http://www.hornady.com/ammunition/superformance-in-gas-operated-firearms

the gun is still in the process or firing while it’s trying to extract the cartridge case.

Its good your using a bolt action.

 

[CarJunkieLS1]

My Hornady 9th Edition manual has data for the .30 TC. The manual does not list Superformance powder. I have a theory as to why, Hornady uses special blended powder to reach the velocity #'s they list for the .30 TC Superformance ammo. It is not available to reloaders and is not the same Superformance powder that we can buy. On that note the reason the .30TC didn't catch on is with standard powders available it wasn't any better than the .308. It uses the same action length, same bullet weights, equals or lesser velocity, and the .30TC brass is much harder to find, was only chambered in one manufacturers rifle vs. the rediculous amount of rifles chambered in .308. Now onto the data.

This is directly out of the Hornady 9th edition manual:
Rifle: TC Encore.................. Bullet Diamater: .308"
Barrel: 26" 1:10 twist.............. Max COAL 2.660"
Case: Hornady/Frontier.......... Max Case Length: 1.920"
Primer: WLR............ Case Trim Length: 1.910

150-155 Gr bullets:

Alliant RL-10x 34.6-38.4............. 2700fps
TAC 36.6-45.2............... 2950fps
H4895 38-43.............. 2800fps
IMR4895 38.4-43.2............. 2800fps
Viht N-140 40-45.4.......... 2800fps
Accurate 2520 40.3-48........... 2900fps
Win 748 40.6-47.5............ 2900fps
BL-C(2) 41.4-49............. 2950fps