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23 Handloads
300 Rem Ultra Mag, all bullet weights
BulletPowder WeightPowderVelocityOALPrimerSource
125gr BTHP 100.0 grH4831SC 3,838 fps3.600" CCI LPM guest
Nosler BT #30125 26" barrel 3-shot 3/8" groups @ 100 yards

150gr SPBT 102.0 grH1000 3,457 fps3.530" Rem 9.5M Hodgdon
Suggested starting load: 91.8 gr

Pressure: 62,900 PSI

150gr SPBT 94.0 grH4831 3,408 fps3.530" Rem 9.5M Hodgdon
Suggested starting load: 84.6 gr

Pressure: 62,900 PSI

150gr BTHP 90.0 grhodgdons 4895 Unknown CCI SP guest
new Remington 300 ultra mag

165gr Barnes X 91.4 grRL22 3,340 fps3.60" CCI250 guest
Only use Barnes XBTs with this load.

165gr SP 93.5 grreloader 25 3,300 fps3.60"" CCI LRM guest
this is with the 165 grain nosler ballistic tip bullets. got a 5 shot group @ 100 yards of .375

168gr BTHP 100.0 grRamshot Magnum 3,435 fps3.65" Fed LRM guest
Barnes TSX Bullet, 27 inch Krieger barrel on Montana 99 action. Also tried 101gr 3442 fps and 102gr 3495. How fast do you want them to go?

180gr SPBT 108.0 grH50BMG 3,159 fps3.530" Rem 9.5M Hodgdon
Suggested starting load: 97.2 gr

Pressure: 62,100 PSI

180gr SPBT 106.0 grH870 3,206 fps3.530" Rem 9.5M Hodgdon
Suggested starting load: 95.4 gr

Pressure: 58,200 PSI

180gr SPBT 96.0 grH1000 3,218 fps3.530" Rem 9.5M Hodgdon
Suggested starting load: 86.4 gr

Pressure: 62,800 PSI

180gr SPBT 89.0 grH4831 3,167 fps3.530" Rem 9.5M Hodgdon
Suggested starting load: 80.1 gr

Pressure: 62,500 PSI

180gr SP 92.0 grreloader 25 3,180 fps3.60"" CCI SP guest
The 180 grain nosler ballistic tip was used.

180gr SP 95.0 grreloader 25 3,370 fps3.60"" CCI LRM guest
the sierra game king was used.

180gr SP 88.5 grR25 Unknown3.605" Win LRM guest
I worked this load up and was very surprised at it’s performance. It shoots a five shot group into one hole at a hundred yards. I figure around 1/2". This load and my rifle are a perfect match.

180gr SP 88.5 grR25 3,094 fps3.605" Win LRM guest
I finally had a chance to chrony this load. With over a ton of energy in reserve at 300 yards it has plenty of punch. A nickle covered a 5 shot group.

180gr XTP 88.5 grRL 25 Unknown3.363" Win LRM guest
Barnes TSX .435 3 shots @100 Remington Sendero

180gr JSP 115.0 grWC-872 3,377 fps3.6" Fed LRM guest
Use H-870 load data and work as this millitary surplus powder.My lot is slower than H-870 Powder cost only 40.00 for 8 pounds and works great in this caliber and larger case’s

180gr JSP 99.5 grRetumbo 3,426 fps3.6" Fed LPM guest
Work up this a very good load Hogdon list 100.5 as max for 3300fps my rifle has a 27 1/2" barrel

200gr BAR XFB 98.0 grH50BMG 2,910 fps3.530" Rem 9.5M Hodgdon
Suggested starting load: 88.2 gr

Pressure: 63,100 PSI

200gr BAR XFB 104.0 grH870 3,028 fps3.530" Rem 9.5M Hodgdon
Suggested starting load: 93.6 gr

Pressure: 61,300 PSI

200gr BAR XFB 83.0 grH1000 2,850 fps3.530" Rem 9.5M Hodgdon
Suggested starting load: 74.7 gr

Pressure: 62,800 PSI

200gr JSP 112.0 grWC-872 3,216 fps3.6" Fed LRM guest
Very consistent load with very little extreme spread

210 gr BTHP 93.0 grRetumbo 3,150 fps Fed LRM guest
Shot thru 28" bbl. 1-10. 1.3" @ 200 yds. Very consistent.

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