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<blockquote data-quote="HMFIC" data-source="post: 1545453" data-attributes="member: 7539">Here&#039;s what&#039;s on the IMR website table:No 4831 listed for that projectile at all, nor is RL-15.&nbsp; Seems that your problem is that the two powders you want to use are pretty slow burning for a 150 grain projectile in .308.&nbsp; Really recommended either with heavier bullet or faster powder but you know it all depends on your rifle too...Bullet Weight (Gr.) Manufacturer Powder Bullet Diam. C.O.L. Grs. Vel. (ft/s) Pressure Grs. Vel. (ft/s) Pressure 150 GR. NOS BT&nbsp; IMR&nbsp; IMR 4007 SSC&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 44.7&nbsp; 2578&nbsp; 44,700 PSI&nbsp; 48.0C&nbsp; 2742&nbsp; 51,300 PSI&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; Hodgdon&nbsp; Varget&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 44.0&nbsp; 2788&nbsp; 43,300 CUP&nbsp; 47.0C&nbsp; 2937&nbsp; 50,300 CUP&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; IMR&nbsp; IMR 4320&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 44.1&nbsp; 2658&nbsp; 44,600 PSI&nbsp; 49.0C&nbsp; 2936&nbsp; 59,800 PSI&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; IMR&nbsp; IMR 4064&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 43.0&nbsp; 2663&nbsp; 44,700 PSI&nbsp; 47.7C&nbsp; 2903&nbsp; 57,100 PSI&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; Winchester&nbsp; 748&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; &nbsp; &nbsp; &nbsp; 48.5&nbsp; 2865&nbsp; 48,000 CUP&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; Hodgdon&nbsp; BL-C(2)&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 45.0&nbsp; 2661&nbsp; 40,200 CUP&nbsp; 48.0&nbsp; 2839&nbsp; 50,000 CUP&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; IMR&nbsp; IMR 4895&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 42.6&nbsp; 2631&nbsp; 42,300 PSI&nbsp; 47.3C&nbsp; 2920&nbsp; 57,700 PSI&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; Hodgdon&nbsp; H335&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 41.0&nbsp; 2619&nbsp; 42,600 CUP&nbsp; 44.0&nbsp; 2787&nbsp; 51,200 CUP&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; Hodgdon&nbsp; H4895&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 43.0&nbsp; 2742&nbsp; 43,200 CUP&nbsp; 45.5&nbsp; 2870&nbsp; 51,000 CUP&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; IMR&nbsp; IMR 8208 XBR&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 40.0&nbsp; 2604&nbsp; 45,500 PSI&nbsp; 44.5C&nbsp; 2870&nbsp; 60,800 PSI&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; IMR&nbsp; IMR 3031&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 40.2&nbsp; 2658&nbsp; 44,300 PSI&nbsp; 43.5C&nbsp; 2881&nbsp; 59,200 PSI&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; Hodgdon&nbsp; Benchmark&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 39.0&nbsp; 2521&nbsp; 38,800 CUP&nbsp; 43.0&nbsp; 2752&nbsp; 49,900 CUP&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; Hodgdon&nbsp; H322&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 37.0&nbsp; 2508&nbsp; 39,100 CUP&nbsp; 40.0&nbsp; 2702&nbsp; 50,500 CUP&nbsp; &nbsp; &nbsp; &nbsp; 150 GR. NOS BT&nbsp; IMR&nbsp; Trail Boss&nbsp; .308&quot;&nbsp; 2.800&quot;&nbsp; 10.0&nbsp; 1176&nbsp; 25,800 PSI&nbsp; 14.0&nbsp; 1417&nbsp; 27,100 PSIEDIT:&nbsp; I just looked through some old reloading notes for a load with Sierra 155grain matchkings and I guess at some point I tried 44.7 grains of RL15 and it worked fairly decent.&nbsp; That might give you a starting point???&nbsp; </blockquote>

[QUOTE="HMFIC, post: 1545453, member: 7539"] Here's what's on the IMR website table: No 4831 listed for that projectile at all, nor is RL-15. Seems that your problem is that the two powders you want to use are pretty slow burning for a 150 grain projectile in .308. Really recommended either with heavier bullet or faster powder but you know it all depends on your rifle too... Bullet Weight (Gr.) Manufacturer Powder Bullet Diam. C.O.L. Grs. Vel. (ft/s) Pressure Grs. Vel. (ft/s) Pressure 150 GR. NOS BT IMR IMR 4007 SSC .308" 2.800" 44.7 2578 44,700 PSI 48.0C 2742 51,300 PSI 150 GR. NOS BT Hodgdon Varget .308" 2.800" 44.0 2788 43,300 CUP 47.0C 2937 50,300 CUP 150 GR. NOS BT IMR IMR 4320 .308" 2.800" 44.1 2658 44,600 PSI 49.0C 2936 59,800 PSI 150 GR. NOS BT IMR IMR 4064 .308" 2.800" 43.0 2663 44,700 PSI 47.7C 2903 57,100 PSI 150 GR. NOS BT Winchester 748 .308" 2.800" 48.5 2865 48,000 CUP 150 GR. NOS BT Hodgdon BL-C(2) .308" 2.800" 45.0 2661 40,200 CUP 48.0 2839 50,000 CUP 150 GR. NOS BT IMR IMR 4895 .308" 2.800" 42.6 2631 42,300 PSI 47.3C 2920 57,700 PSI 150 GR. NOS BT Hodgdon H335 .308" 2.800" 41.0 2619 42,600 CUP 44.0 2787 51,200 CUP 150 GR. NOS BT Hodgdon H4895 .308" 2.800" 43.0 2742 43,200 CUP 45.5 2870 51,000 CUP 150 GR. NOS BT IMR IMR 8208 XBR .308" 2.800" 40.0 2604 45,500 PSI 44.5C 2870 60,800 PSI 150 GR. NOS BT IMR IMR 3031 .308" 2.800" 40.2 2658 44,300 PSI 43.5C 2881 59,200 PSI 150 GR. NOS BT Hodgdon Benchmark .308" 2.800" 39.0 2521 38,800 CUP 43.0 2752 49,900 CUP 150 GR. NOS BT Hodgdon H322 .308" 2.800" 37.0 2508 39,100 CUP 40.0 2702 50,500 CUP 150 GR. NOS BT IMR Trail Boss .308" 2.800" 10.0 1176 25,800 PSI 14.0 1417 27,100 PSI [COLOR="red"]EDIT: I just looked through some old reloading notes for a load with Sierra 155grain matchkings and I guess at some point I tried 44.7 grains of RL15 and it worked fairly decent. That might give you a starting point??? [/COLOR] [/QUOTE]

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