New here from the great state of Kansas!

[T-Bone]

I just acquired a new .300 Ultra Mag. had a few questions about it. Rem 700 SPS stainless. The for arm is touching the bottom of the barrel, do I need to work on it before I shoot it? Thanks for any help! :?:

 

[JD338]

T-Bone

Welcome to the forum.

Congratulations on your 300 RUM. That contact is a pressure point.
I would shoot it and see how she groups.
What load(s) are you shootng?

JD338

 

[FOTIS]

Welcome to the forum and Happy New Year.

Congrats on your new rifle. I would suggest not doing anything to it. Shoot it as is and if it does not shoot well then we can discuss other options.

I highly suggest 200 grain accubonds with Retumbo or Reloder 25. You should break 3100 fps with either and that is more power for just about anything.

If you have another bullet in mind let me know.

 

[T-Bone]

Thanks Guys I am new to reloading. I am just getting into it. Went over to a friends and loaded some 180 gr. acubonds . 94 grs of H1000. I am going to start there. Have not shot it yet.

 

[FOTIS]

According to Quickload your starting load is over max. Be careful!

Cartridge : .300 Rem Ultra Mag
Bullet : .308, 180, Nosler AccuBond 54825
Cartridge O.A.L. L6: 3.598 inch or 91.39 mm
Barrel Length : 26.0 inch or 660.4 mm
Powder : Hodgdon H1000

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 75.20 2504 2507 32092 10346 94.1 1.689
-18.0 84 77.08 2569 2638 34413 10643 95.3 1.644
-16.0 86 78.96 2634 2772 36909 10919 96.5 1.600
-14.0 88 80.84 2698 2910 39594 11171 97.4 1.548
-12.0 90 82.72 2762 3050 42485 11398 98.3 1.498
-10.0 92 84.60 2826 3193 45601 11597 98.9 1.449
-08.0 94 86.48 2890 3338 48960 11767 99.5 1.403
-06.0 96 88.36 2953 3485 52588 11906 99.8 1.358
-04.0 98 90.24 3015 3634 56507 12013 100.0 1.315 ! Near Maximum !
-02.0 100 92.12 3077 3784 60747 12090 100.0 1.274 ! Near Maximum !
+00.0 102 94.00 3138 3935 65341 12158 100.0 1.234 !DANGEROUS LOAD-DO NOT USE!
+02.0 104 95.88 3198 4088 70320 12222 100.0 1.195 !DANGEROUS LOAD-DO NOT USE!
+04.0 106 97.76 3258 4241 75689 12282 100.0 1.158 !DANGEROUS LOAD-DO NOT USE!
+06.0 108 99.64 3317 4397 81488 12337 100.0 1.122 !DANGEROUS LOAD-DO NOT USE!
+08.0 110 101.52 3375 4553 87770 12387 100.0 1.087 !DANGEROUS LOAD-DO NOT USE!
+10.0 112 103.40 3434 4712 94587 12431 100.0 1.054 !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 102 94.00 3257 4239 79450 11697 100.0 1.141 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 94.00 2957 3494 52405 12471 98.0 1.356

 

[SakoSteve270wsm]

Welcome to the forum T-Bone !

 

[T-Bone]

This load came straight out of the book. ??

Powder: H1000
Charge Weight (in grains) Muzzle Velocity (fps) Load Density
96.0 3225 fps 95%
94.0* 3160 fps 93%
92.0 3089 fps 91%

 

[SakoSteve270wsm]

Don't have the new nosler book,but the sierra shows 96gr max for 180gr bullets and h1000.But that is with sierra bullets not noslers.

 

[FOTIS]

If it is straight from the book then you're good. This version of Q/L is acting up a little with the 300 RUM......

 

[T-Bone]

Thanks Guys! When I get a press I will be reloading a lot. I have about half of what I need to be set up. Thanks again, and I will let you know how it shoots!

 

[FOTIS]

Anytime! Ask away! :lol: