Has anyone besides rem 25-06 man cronographed this?

[coyotetrapper]

I know rem man stated he gets 3100fps from 51.5 gr rl-22 powder out of his 25/06, has anyone else cronographed this powder in 25/06 using 115 bal tips? I have no reason to not believe rem man just wondering if others have had same speed ratings? As none of the manual or bal programs show this speed from a 24" barrel?

I'll have a crono next week, just finished as the range the gun likes 51.5 gr of powder, just wondering what others get for speed in this powder range thanks again. CT

 

[bluedot]

I have not chronographed that exact load but my 700 rem with a factory barrel gets 2935 fps with 56 gr of RL22 under a 120 Sierra HPBT.

 

[coyotetrapper]

56 grains with a 120 gr bullet? Is that inside the specs for that bullet? That seems high on powder charge for such a bullet? You can't break 3,000 fps with 56 gr of rl-22?

Maybe I need to try IMR 4350?

 

[FOTIS]

Cartridge : .25-06 Rem.
Bullet : .257, 115, NOS BalTip 25115
Cartridge O.A.L. L6: 3.250 inch or 82.55 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : Alliant Reloder-22

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

-20.0 73 41.20 2286 1335 24197 9185 84.0 1.695
-18.0 75 42.23 2344 1403 25725 9531 85.5 1.656
-16.0 77 43.26 2403 1474 27351 9872 87.0 1.617
-14.0 79 44.29 2462 1547 29082 10207 88.4 1.579
-12.0 81 45.32 2521 1623 30925 10535 89.8 1.541
-10.0 82 46.35 2580 1700 32879 10854 91.1 1.505
-08.0 84 47.38 2640 1779 34978 11164 92.3 1.469
-06.0 86 48.41 2699 1861 37206 11462 93.4 1.433
-04.0 88 49.44 2759 1944 39583 11748 94.5 1.392
-02.0 90 50.47 2819 2029 42118 12020 95.4 1.352
+00.0 92 51.50 2879 2116 44824 12278 96.3 1.313
+02.0 93 52.53 2938 2205 47692 12519 97.1 1.276
+04.0 95 53.56 2998 2295 50722 12743 97.8 1.240
+06.0 97 54.59 3058 2387 53941 12949 98.4 1.205
+08.0 99 55.62 3117 2480 57367 13135 98.9 1.172 ! Near Maximum !
+10.0 101 56.65 3176 2575 61014 13301 99.3 1.139 ! Near Maximum !

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 92 51.50 3044 2367 54390 12333 99.8 1.206
Data for burning rate decreased by 10% relative to nominal value:
-Ba 92 51.50 2666 1815 35975 11523 88.2 1.448

 

[bluedot]

According to Hornady 4th edition a max load of RL22 is 56.5 gr. with 117 gr bullets, this load was worked up to carefully, some barrels are a little "looser" than others and will tolerate much hotter loads without undue pressure.

I have found primers can also make a pretty big difference in loads and how quickly they develop pressure.

The 56 gr load is quite mild in my barrel.

As with any load work up carefully.

My particular barrel tends to give velocities that are below what others give on average.

For 115 and 120 gr bullets I have found RETUMBO to give me velocities that are more in line with what the 25-06 should get. It also has given me outstanding accuracy. Retumbo is one of the powders that seems to benefit frm magnum primers.