rl-22 powder charge for 300 win mag pushing 180gr accubonds

[BigRutt]

Hey guys,

Just wondering what charge i should go up to or stay at. Currently I'm at max for the nosler manual 75.5 grains of RL-22. No signs of pressure and would have had a pretty nice group if I wouldn't have moved the rest before the last shot. Just wondering if I should test higher or stick at max from the nosler manual. I found 2 other manuals that list 76.9 and 77.0 for 180gr bullets. This will strictly be a hunting load so I don't want to push it too much but I wouldn't mind the extra velocity.

Tikka m695 300win mag 25-26" barrel suppressed with tbac ultra 7
Norma brass
Fed 215m
nosler 180 gr accubond
reloader 22 (75.5 currently)
FPS 2900-2930

If anyone has run tikka's or rl-22 in tikkas or has any input on the set up I am all ears.

 

[Trippy]

What's your COAL and actual barrel length? Stock Tikka M695 looks to be 24".

 

[BigRutt]

What's your COAL and actual barrel length? Stock Tikka M695 looks to be 24".

Yeah looks like 24" barrel and the COAL is 2.835 longest i could load it. Due to the mag and i dont want to single feed. I had 2.840 with the comparator but my dummy round is a little shorter

 

[Trippy]

Yeah looks like 24" barrel and the COAL is 2.835 longest i could load it. Due to the mag and i dont want to single feed. I had 2.840 with the comparator but my dummy round is a little shorter

I need COAL, not CBTO, to plug into Quickload for you. Should be around 3.340" if you're following most books. From memory, pretty sure I run 3.570" in my Tikka T3x but I did the mods to allow the mag to run them that long, CBTO is 2.939" though.

 

[wyo2track]

Every gun is different. I wouldnt be afraid to keep bumping the powder charge up in 0.3 to 0.5 gr increments if there are no pressure signs. I've easily went over Nosler max book charges in most all my rifles especially if I'm loading longer than SAMMI standard.

 

[Trippy]

Every gun is different. I wouldnt be afraid to keep bumping the powder charge up in 0.3 to 0.5 gr increments if there are no pressure signs. I've easily went over Nosler max book charges in most all my rifles especially if I'm loading longer than SAMMI standard.

I'm over book values too but my COAL is a lot longer than anything says, was a guessing game. Thought I'd use QL to give a warm fuzzy feeling.

 

[BigRutt]

I'm over book values too but my COAL is a lot longer than anything says, was a guessing game. Thought I'd use QL to give a warm fuzzy feeling.

My COAL is 3.445

 

[Trippy]

Sure there's some variation not in here like; brass capacity, suppressor, twist rate, etc. Just something to maybe show how high you can go chasing speed like you want to, all on you to double check the numbers and actually shoot it. FYI, 75.5 grain in here shows a speed of 3005 fps.



Cartridge : .300 Win. Mag.(SAAMI)
Bullet : .308, 180, Norma Silverbl 67628
Useable Case Capaci: 81.534 grain H2O = 5.294 cm³
Cartridge O.A.L. L6: 3.445 inch = 87.50 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-22 *C

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 82 62.40 2468 2434 32190 10626 91.2 1.552
-18.0 84 63.96 2531 2561 34456 10968 92.5 1.511
-16.0 86 65.52 2595 2692 36888 11297 93.7 1.470
-14.0 88 67.08 2660 2827 39497 11611 94.9 1.423
-12.0 90 68.64 2724 2965 42301 11909 95.9 1.378
-10.0 92 70.20 2788 3106 45313 12188 96.8 1.334
-08.0 94 71.76 2852 3250 48536 12449 97.6 1.292
-06.0 96 73.32 2916 3398 51963 12688 98.3 1.252
-04.0 99 74.88 2979 3548 55631 12905 98.9 1.213 ! Near Maximum !
-02.0 101 76.44 3043 3701 59562 13098 99.3 1.175 ! Near Maximum !
+00.0 103 78.00 3106 3856 63781 13265 99.7 1.139 !DANGEROUS LOAD-DO NOT USE!
+02.0 105 79.56 3169 4013 68311 13407 99.9 1.105 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 81.12 3231 4173 73181 13520 100.0 1.071 !DANGEROUS LOAD-DO NOT USE!
+06.0 109 82.68 3293 4334 78423 13610 100.0 1.039 !DANGEROUS LOAD-DO NOT USE!
+08.0 111 84.24 3355 4498 84072 13693 100.0 1.007 !DANGEROUS LOAD-DO NOT USE!
+10.0 113 85.80 3416 4663 90170 13770 100.0 0.977 !DANGEROUS LOAD-DO NOT USE!

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 103 78.00 3242 4200 77120 12784 100.0 1.052 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 78.00 2911 3387 50871 13119 95.1 1.255

 

[Trippy]

Being software it's not perfect. FWIW it gave my load a speed of 2947 fps, actual average in my T3x is 2973 fps.

 

[BigRutt]

Sure there's some variation not in here like; brass capacity, suppressor, twist rate, etc. Just something to maybe show how high you can go chasing speed like you want to, all on you to double check and actually shoot it. FYI, 75.5 grain in here shows a speed of 3005 fps.

View attachment 318450

Cartridge : .300 Win. Mag.(SAAMI)
Bullet : .308, 180, Norma Silverbl 67628
Useable Case Capaci: 81.534 grain H2O = 5.294 cm³
Cartridge O.A.L. L6: 3.445 inch = 87.50 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-22 *C

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 82 62.40 2468 2434 32190 10626 91.2 1.552
-18.0 84 63.96 2531 2561 34456 10968 92.5 1.511
-16.0 86 65.52 2595 2692 36888 11297 93.7 1.470
-14.0 88 67.08 2660 2827 39497 11611 94.9 1.423
-12.0 90 68.64 2724 2965 42301 11909 95.9 1.378
-10.0 92 70.20 2788 3106 45313 12188 96.8 1.334
-08.0 94 71.76 2852 3250 48536 12449 97.6 1.292
-06.0 96 73.32 2916 3398 51963 12688 98.3 1.252
-04.0 99 74.88 2979 3548 55631 12905 98.9 1.213 ! Near Maximum !
-02.0 101 76.44 3043 3701 59562 13098 99.3 1.175 ! Near Maximum !
+00.0 103 78.00 3106 3856 63781 13265 99.7 1.139 !DANGEROUS LOAD-DO NOT USE!
+02.0 105 79.56 3169 4013 68311 13407 99.9 1.105 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 81.12 3231 4173 73181 13520 100.0 1.071 !DANGEROUS LOAD-DO NOT USE!
+06.0 109 82.68 3293 4334 78423 13610 100.0 1.039 !DANGEROUS LOAD-DO NOT USE!
+08.0 111 84.24 3355 4498 84072 13693 100.0 1.007 !DANGEROUS LOAD-DO NOT USE!
+10.0 113 85.80 3416 4663 90170 13770 100.0 0.977 !DANGEROUS LOAD-DO NOT USE!

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 103 78.00 3242 4200 77120 12784 100.0 1.052 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 78.00 2911 3387 50871 13119 95.1 1.255

Man that is awesome very grateful here!! Thank you so much!!! Time to go over data

 

[wyo2track]

After reading your first post again, I'm glad I'm not the only one that runs 150 fps slower than the Nosler manual speeds with charges above their max. I need to find some fast barrels like Nosler uses I guess.

 

[BigRutt]

After reading your first post again, I'm glad I'm not the only one that runs 150 fps slower than the Nosler manual speeds with charges above their max. I need to find some fast barrels like Nosler uses I guess.

Yeah all my tikkas run slow i thought it might have been my can or something. But they all shoot very well so I have no problem with it.

 

[Trippy]

Yeah all my tikkas run slow i thought it might have been my can or something. But they all shoot very well so I have no problem with it.

Stolen from another person.

When buying a Tikka you know 3 things;
1. It's smooth
2. It's slow
3. It's accurate

The can "should" speed things up a little per some manufacturers. Not 100 fps but something measurable depending on the equipment. Out of curiosity...how you like the Ultra 7 on that? Direct thread?

I have a Nomad in jail for my 300 WM but always looking. I wanted light and DT, probably should've done Ti but the 6 lb rifle could use the extra weight. So hard for my dealer to get a TBAC.

 

[BigRutt]

Stolen from another person.

When buying a Tikka you know 3 things;
1. It's smooth
2. It's slow
3. It's accurate

The can "should" speed things up a little per some manufacturers. Not 100 fps but something measurable depending on the equipment. Out of curiosity...how you like the Ultra 7 on that? Direct thread?

I have a Nomad in jail for my 300 WM but always looking. I wanted light and DT, probably should've done Ti but the 6 lb rifle could use the extra weight. So hard for my dealer to get a TBAC.

Loving the ultra 7 glad I did a lot of research like 4 years lol shouldn't have waited that long. It is a CB/but converted to Direct thread.

So far I have had it on my ar-15, 6.5cm, and my 300win mag. Also put it on my buddies 308 and 6.5cm.

Been a lot of fun and works great. Does get hot on the ar-15 about 10 round mag dump and I need to let it cool down. On the bolt actions i usually do about 5-6 and let it cool down. You will be happy with the nomad!!