I have noticed that these 300 tsx are coming out much slower than other 300g bullets I have with the same powder charge. I want about 2400 and am getting about 2100.
Am using 72g of RL15. This is already a compressed load (these bullets are freaking long). I was thinking of trying IMR4064 (faster powder).
Anyone else had this problem? Any suggestions?
I've noticed that Barnes TSX seem to need more powder to get up to speed. I think that with less bearing surface they don't seem to build up pressure as high before they start moving. I'm adding 2-4 grains above the regular charge for my 7 mag. I have the 300 grain TSX's and Banded solids for my 375 but I haven't tried them out yet.
Barnes Manual shows that the max charge for the 300 XFB is 72 or RL15. According to all I have heard, the TSX's need more powder to get the same velocity, and the pressures don't go up. I think I heard that the rule of thumb was 2 grains more in an '06 type case, so the 375 mag may take more. The XFB velocity for the 72 grains shows a velocity of 2645. You should be able to get more than 2100.
The information given from Barnes with thier TSX's is to use thier XLC (coated) bullet data. My initial results indicate this to be pretty close. Go to the XLC data and cautiously use that information. Good luck!
Just a suggestion: Also make sure your chronograph is working properly. Getting only 2100 fps with 72 grs of RL-15 behind a 300 gr bullet just doesn't sound right. IMHO, it should be getting more velocity than that regardless of the make of the bullet.
-Bob F.
I have noticed that these 300 tsx are coming out much slower than other 300g bullets I have with the same powder charge. I want about 2400 and am getting about 2100.
Am using 72g of RL15. This is already a compressed load (these bullets are freaking long). I was thinking of trying IMR4064 (faster powder).
Anyone else had this problem? Any suggestions?
I'm using 79.6 gr. of RL 19 for 2,592 fps. from both my Ruger M77 and Win. pre-64 .375 H&H's with the 300 gr. Barnes TSX and Banded Solids. Most accurate bullets I have found. Using 67.4 gr. of IMR-4064 gives me 2,545 fps. Lawdog
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The information given from Barnes with thier TSX's is to use thier XLC (coated) bullet data. My initial results indicate this to be pretty close. Go to the XLC data and cautiously use that information. Good luck!
NO ... here is what Barnes has to say:
1. What load data do I use for the Triple Shock Bullet?
Answer. We recommend that you use the minimum X Bullet load data to start.
To compensate for the reduced pressures associated with the Triple Shock, you may have to work up 1 to 2 additional grains above listed loads to achieve equal pressures. Pressures can jump dramatically; therefore we recommend that you work up in 1/2 gr. increments until you are no more than 1 to 2 grains above the listed max load or until signs of excessive pressure are evident. Whichever comes first. You should watch for excessive case head expansion, sticky bolt lift, flattened primers or shiny spots on the base of the case. If you have case head expansion of more than .0005" with a once-fired case, this is a sure sign of excessive pressure. You will have to measure your case head with a Blade Micrometer just in front of the extractor groove, or you can use a regular micrometer and measure the belt on belted cases, before and after shooting. When any of these signs appear, back down one full grain and you will have a max load for your gun.
If you do not feel comfortable working up a load, or don't have the proper equipment, then we suggest following the recommended X-Bullet load data. For the 168gr .308 cal Triple Shock Bullet, use the 165gr X-Bullet data.
2. Since the Triple Shock and the XLC coated bullets are similar and both reduce pressures within the bore, can I use the XLC load data with Triple Shocks?
Answer. No. While the Triple Shock and XLC both reduce pressures, they are very different and each bullet has it's own strengths. Reloading using the XLC load data will cause excessive pressures in some cases.
Bullet make can have a HUGE effect on MV and how you get to what you can get to vs pressure. Each individual bullet can vary a lot.
I don't disagree with checking the chrono, but I'd also am sure that TSX vs regular(depending on any chamber differences) the tsx will take more powder.
Very similar to all our local idiots that bought into the X early on. Problem was they were hotrodding ballistic tips and just stuck the X on top of the same charge. Regardless bearing surface, ogive, case capacity etc....
Anyway would not be unusual to add powder in this case OR to have to switch powders. Slightly compressed loads have always been very accurate for me, but you have to have a few other parameters that are pluses also.
PS use rimfire ammo to verify the chrono if needed.
Best, Jeff
Anybody used these bullets on game yet? How is the expansion on light game like impala or white tail?
The problem may be the specific powder lot of RL15 you are using. I'v had probelms in the past with RL15 in my Lazzeroni 9.53 (375-cal) HellCat.
With one lot I was getting almost 2600 fps with the 300gr Nosler Partition and with another lot I coulnd't get past 2450 fps without big time pressure signs.
Try Varget!
I haven't had a chance to try the Triple Shocks in my Win 70, but I have had good accuracy and velocity with these loads:
300 gr.Barnes X-70.0 gr. IMR 4230, V=2580 FPS
72.0 gr RL-15, V=2570
300 gr. Swift A-Frame, 69.0 gr IMR 4320, V=2480
71.0 gr RL-15, V=2535
79.0 gr H-4350, V=2540
If you ever decide to load the Nosler 260 gr. Partition, I have tried 72.0 gr of RL-12 for a V=2745 and 73.0 gr. of RL-15 for a V=2760
As a final point, I have loaded the Triple Shocks in other calibers and I have been able to exceed the max. loads that Barnes rcommends for their X bullets. But go slow until you find what your rifle likes. Good luck.
I suppose this is like rubbing salt in an open wound, but I have a bunch of Barnes bullets in a bunch of calibers, and I have yet to get one to shoot acceptably. Now I read about the Trishock and the propaganda makes sense, but frankly I'm tired of messing with them. I'm back to Nosler partitions for everything from 6mm and up. In any event, 300 Nosler partitions (Federal Premium and hand loads) have performed brilliantly in every .375 I have used them in.
I suppose this is like rubbing salt in an open wound, but I have a bunch of Barnes bullets in a bunch of calibers, and I have yet to get one to shoot acceptably. Now I read about the Trishock and the propaganda makes sense, but frankly I'm tired of messing with them. I'm back to Nosler partitions for everything from 6mm and up. In any event, 300 Nosler partitions (Federal Premium and hand loads) have performed brilliantly in every .375 I have used them in.
If you want to sell some of those Barnes bullets let me know. I also use the Noslers Partitions and love them but I'm always looking for a good deal.