New to the forum. I have a EABCO T/C Encore barrel in 6.5 BRM.
Here are some recent loads and comments for the 6.5 BRM;
I have yet to have a bad shooting load with this cartridge. Some are just much more consistant than others. Mostly powder issues. EABCO has a few published loads but as Brown has said "he is not in the loading manual business". The loads EABCO has published are very safe and hard to screw up with. The powders that I have found to be more versatile are RL15 and RL 17. IMR 4350 has been more consistant than H4350. and in my barrel for this T/C Encore, the RL 15 & 17 have been the big winners. I am going to start a "ladder" test run of IMR 4007ssc next week. and some further IMR 4350 load testing. This testing is complete and will post if anyone is interested.
There are some issues with EABCO's pre-formed brass. in that the shoulder datum i.e., head space is .014"-.017" short of the actual chamber datum (in this barrel) and I suspect most of the barrels. This results in very short case life (3-4 loadings) if you just plunge ahead and start loading.
I found I have to fire form all the R-P pre-formed cases from Brown. I use 7.5 gr of Unique covered by a light tissue wad to hold the powder in place, followed by cream of wheat or corn meal to the neck and a tight fitting tissue wad to compact and fill the remainder of the neck. If you are going to use this method, shoot the loads right away do not put them aside and shoot them next week. They may absorb moisture and the COW could form a hard chunk! This would not be good!
This will not necessarily form out the shoulder completely, but, it will bring the case shoulder to the datum of the chamber ( you will find the cases shrink a couple of thousand of an inch, this is good). Also these cases are covered in some sort of lube that was used in the forming (I assume a hydraulic process) They must be degreased. The cases prior to fire-forming are run through a Hornady 7m/m short neck size die ( 7/m/m Waters die will also work) to expand the neck and then run through Brown's 6.5BRM FL die just enough to form a false shoulder that provides a "crush" fit . Load it with the above fire form load and bang away. Chamber and cases must be degeased. I have loaded some of these cases 12-13 times. Annealing after 5-6 firings. W-W cases I have used have been slightly smaller in capacity however shooting results have not shown a significant difference in performance. By using virgin brass W-W or Rem or Hornady(Hornady is my preference) You have the ability to control the case length. The Brown pre-formed R-P cases are too short limiting the amount of neck tension /seating length. The case mouths are well short of the chamber end. The actual chamber length in my rifle is 2.030". There is no reason to shorten the cases to less than 2.015" I trim all cases to 2.015" after fire forming and FL sizing. Keep the neck as long as you can. Verify the actual chamber length of your rifle.
Consentricity is the key to consistant accuracy in this cartridge. You have to keep projectile run-out to a MINIMUM. It will shoot almost any load to less than MOA. 1/2 MOA is easy to achieve with zero run out cartridges. Suprisingly, some of the most consistant 1/2 MOa loads have been with 120 Nosler Ballistic tips and 130 Nos Accubond.
The throat is long and a fine line between seating the bullets out as close to the lands as possible and still maintaining enough neck tension by seating the bullet deep enough in the case to maintain consistant ingition /pressure. Especially with the slower burning powders. The real long bullets like the Nosler 130 and 140 Accubond are able to be seated deep enough and not have to make a long jump to the lands. Bullets with long boat tails have been a concentricity head ache, i.e., A-Max and Berger bullets. Brown offers a VLD seating plug for the seating die. This is a must have or drill the seating plug out another 1/4" to allow the plug to engage the ogive rather than balancing the projectile on the point.
Here are a few loads;
130 gr Nosler Accubond, 32.5 gr RL-15, cci200 primer, seated .050" from lands. this has been a consistant 1/2 MOA shooter velocity chrono's at 2533 fps and I don't consider it a MAX load. Getting close though.
140 gr Sierra Game King, 35.3 gr RL 17, cci 200 primer, 2434fps. this has been a consistant .800" shooter. I have found that this powder will allow a bit more velocity with out showing signs of pressure. But it shoots about the same size groups. This is a nominal load for what the round was designed for.
If you substitute the Nosler 140 Accubond back off a the load a bit. and work up. It will generate another 70 fps . I believe that if you are getting velocities around 2500fps with any 140 grain bullet you are at MAX. It will still shoot well but case life suffers. In the T/C encore this is as far as I feel it shoud be pushed. The Brown 97 rifle might handle a bit more but I understand extraction can be an issue. I'd love this in a Ruger #1.
RL 17 inquiries to Alliant brought this response;
"We have no data for this cartridge. RL 17 is similar to IMR 4350 in burn speed and reloading data. You can use the same starting load for both, but this is not saying their max loads will be exactly the same.
However, they will be similar. Thanks for your note and have a nice day."
To a certain extent this is true, I started with a 34 gr load of each powder(IMR 4350 and RL17) w/ Sierra 140 gr Game King W-W cases , CCI200 primer, the IMR load chrono'd 2170 fps and the RL17 2350 fps! Not exactly interchangable data! All other load factors were the same.
120 gr Nosler Ballistic tip, 33.5 gr RL15, cci 200 primer, 2611 fps this is one of the most consistantly accurate loads I have put through this rifle always(if I do my part) under 1/2 MOA. One 5 shot group went into .365" c-t-c @ 100 yds. This bullet has to make a big jump to the lands and still produces excellent results. I do not like the Ballistic tip for hunting anything bigger than coyotes but for accuracy I have found in every rifle I have shot them through, that they are the standard I judge by.
I have posted many loads for this round on Ammoguide.com but access is limited to paid members. Since there is a lack of published loads for this cartridge I will be happy to share any other info regarding this cartridge and the 50-60 different loads I have shot. with anyone, just PM me.
This is not 6.5-.284 or other high velocity 6.5. It is a fun easy to load for wildcat that is certainly capable of killing whitetails and pronghorns quite handily. I would not risk an expensive elk hunt on the limited abilities of the round but anything the 6.5 Swede will do this will do. I haven't shot any thing lighter than 120 gr bullets but if you find a load that will shoot the lighter "varmint" bullets it should be a great rodent killer.
Sorry this got so lenghty.