Reloader 10X data for 6.5 & 7.62x54R

[AndyGC]

Hello,

I know 10x isn't perfect for these rounds, but I have alot of powder and wast not want not as my grandmother used to say..........

Looking for data as to a safe starting charge for 139gn in the 6.5 & 174-180gn in the 7.62x54R (rifle bore is .311 if that makes a difference)

Thanks

Andy

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.

[Edward Horton]

Reloader 10X is a relatively new powder so the reloading manuals have not printed any data for it. You can find a little reloading date at the Alliant website but not for your cartridges.

Alliant has the Government contract to produce ammunition at the Lake City munitions plant. Both Remington and Winchester lost the bid and the contract at Lake City.

HINT: Winchester was running Lake City government plant until they lost the bid to Alliant, therefore Alliant will not be using WC846, W748, BL-C2 and H335 in their military ammunition. Gee I wonder what caliber military ammunition they put all the Reloader 10X in (.223 or 5.56)

Now the bad news, Reloader 10X is too fast a burning powder for the 6.5 and 7.62x54R the reloading manuals list reloader 15 and 19 and both are much slower burning.

Spend a little money and get a slower burning powder and be safe.

Burn rate chart below.



You fall into the medium case capacity type cartridges category and slower burning powders with your bullet weights.



Be safe and not sorry

[AndyGC]

yea thanks Ed, will do.

Andy

[Parashooter]

Pay no attention to that man behind the curtain!

While not ideal, RL10X is certainly suitable for loading either cartridge, particularly with the lighter bullets at moderate velocity.

Here's some deformatted QuickLOAD output for both cartridges with light bullets. Remember that these are estimates and intended only as a guide for working up carefully.

Cartridge : 6.5 x 55 Swedish
Bullet : .264, 100, Sierra HP 1710
Cartridge O.A.L. L6: 3.000 inch or 76.20 mm
Barrel Length : 29.0 inch or 736.6 mm
Powder : Alliant Reloder-10x

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-10.0 70 34.20 2938 1917 39900 6477 100.0 1.428
-08.0 72 34.96 2984 1977 42004 6566 100.0 1.395
-06.0 74 35.72 3029 2037 44197 6653 100.0 1.363
-04.0 75 36.48 3073 2097 46482 6739 100.0 1.332
-02.0 77 37.24 3117 2158 48864 6824 100.0 1.303 ! Near Maximum !
+00.0 78 38.00 3161 2218 51345 6908 100.0 1.275 ! Near Maximum !
+02.0 80 38.76 3204 2279 53931 6990 100.0 1.248 ! Near Maximum !

Cartridge : 7.62 x 54 R Russ.Nagant
Bullet : .311, 125, Sierra SP 2305
Cartridge O.A.L. L6: 2.900 inch or 73.66 mm
Barrel Length : 29.0 inch or 736.6 mm
Powder : Alliant Reloder-10x

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-10.0 74 39.60 2833 2228 33298 5524 99.8 1.454
-08.0 76 40.48 2883 2307 35121 5602 99.9 1.424
-06.0 78 41.36 2932 2386 37031 5672 100.0 1.394
-04.0 79 42.24 2981 2466 39031 5735 100.0 1.361
-02.0 81 43.12 3028 2545 41127 5796 100.0 1.330
+00.0 82 44.00 3075 2625 43323 5857 100.0 1.300
+02.0 84 44.88 3122 2705 45622 5917 100.0 1.270
+04.0 86 45.76 3167 2785 48030 5976 100.0 1.242
+06.0 87 46.64 3213 2865 50552 6033 100.0 1.215 ! Near Maximum !
+08.0 89 47.52 3257 2945 53194 6090 100.0 1.189 ! Near Maximum !

[Edward Horton]

Parashooter

He didn't ask about "lighter bullets" and the load density would be much lower than optimum.

There are not any loads listed for RL10X below from the Alliant reloaders guide web site.

If I'm recommending loads I don't push the envelop on safety and chamber pressure when slower powders are better suited especially when they are not in the loading manuals. RL10X was developed for the M16 5.56 or smaller capacity cases. They don't even list RL-15 and that is a medium burning powder.



I do not see any RL10x listed below in the Speer reloading manual and let me point out the words "Strong Commercial Actions."


I believe in handing out safe reloading information.

[duggaboy]

I load for both of the in question cartridges, and I have to say the reloader 15 is with out a doubt, the best and nicest shooting powder I have found. Look for reloading stuff at bartlett's and wideners. And, I just looked over the whole available lists at the Polygunbags.com site, really good stuff at a good price.

[Parashooter]

He didn't ask about "lighter bullets" and the load density would be much lower than optimum.

You're right, he asked about heavier bullets. It can work for that also. Load density is moderate - not an ideal situation, but not so different from some old standards like 46 grains of 4895 with 175-grain bullets in .30/06 (~84%). Anyway, he says he's trying to use up some excess powder -not seeking an optimum load.

There's nothing inherently wrong about using some powders "off label", especially tubular or flake double-base varieties that are relatively easy to ignite at lower densities. I see RL10X loads listed by Alliant for cartridges from .222 Rem. up to .458 Lott, including .303 British and .308 Win. loads for bullets from 123 to 180 grains. It's certainly not just for "5.56 or smaller capacity cases".

Some of us enjoy thinking "out of the box" while others are cautious about discussing anything that's not in a manual. I trust Andy is capable of deciding where he stands.

More QuickLOAD estimates, this time with heavier bullets -

Cartridge : 7.62 x 54 R Russ.Nagant
Bullet : .311, 174, Sierra HPBT MatchK 2315
Cartridge O.A.L. L6: 3.040 inch or 77.22 mm
Barrel Length : 29.0 inch or 736.6 mm
Powder : Alliant Reloder-10x

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-10.0 70 36.00 2443 2305 36160 5034 100.0 1.643
-08.0 72 36.80 2481 2379 38040 5105 100.0 1.609
-06.0 74 37.60 2520 2453 40001 5175 100.0 1.572
-04.0 75 38.40 2557 2527 42044 5245 100.0 1.538
-02.0 77 39.20 2595 2601 44175 5313 100.0 1.505
+00.0 78 40.00 2632 2676 46395 5381 100.0 1.473
+02.0 80 40.80 2668 2750 48709 5448 100.0 1.442 ! Near Maximum !
+04.0 81 41.60 2704 2825 51120 5514 100.0 1.412 ! Near Maximum !
+06.0 83 42.40 2740 2901 53633 5579 100.0 1.384 ! Near Maximum !

Cartridge : 6.5 x 55 Swedish
Bullet : .264, 139, Lapua Scenar GB458
Cartridge O.A.L. L6: 3.150 inch or 80.01 mm
Barrel Length : 29.0 inch or 736.6 mm
Powder : Alliant Reloder-10x

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-10.0 63 28.80 2400 1777 36952 5619 100.0 1.726
-08.0 65 29.44 2435 1830 38744 5708 100.0 1.689
-06.0 66 30.08 2470 1883 40601 5795 100.0 1.652
-04.0 67 30.72 2505 1937 42525 5882 100.0 1.618
-02.0 69 31.36 2539 1990 44519 5967 100.0 1.584
+00.0 70 32.00 2574 2044 46584 6052 100.0 1.553
+02.0 72 32.64 2607 2098 48722 6137 100.0 1.522 ! Near Maximum !
+04.0 73 33.28 2641 2152 50936 6220 100.0 1.492 ! Near Maximum !
+06.0 74 33.92 2674 2206 53229 6302 100.0 1.464 ! Near Maximum !

Again, these figures are not load recommendations. Just some information to help Andy make his own decisions - perhaps based on rational calculation instead of giving up when there's no data in the manuals for a specific combination.