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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet touching the lands or 2000th back?
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<blockquote data-quote="Steve Sheasly" data-source="post: 1669544" data-attributes="member: 103826"><p>Recently I have developed loads for the following calibers and manufacturers:</p><p>340 Weatherby Mark V USA --- 300 gr. Accubonds 78.5 of IMR 4831 .040 off lands 1/2inch groups at 100 yards**</p><p>.338 Lapua Savage 300 gr. Accubonds Max load of H1000 .040 off lands 1-inch groups at 300 yards</p><p>300 win mag Browning Xbolt 200 gr. Eld-X max load IMR .020 off 1/2 inch groups 100 yards</p><p>264 win mag 140 gr interlock 57 gr. H-1000 1/4 groups at 100 yards. ( the .264 is a 1:10 twist VLD high BC long bullets will not stabilize shoots interlocks well if I wanted this gun to compete with a 6.5 Creedmore I would re-barrel to 1:9.25)</p><p></p><p>So it depends on the powder, bullet, and gun. Accubonds typically like more jump but </p><p></p><p>**Note: on the 340 I used the IMR for H 4831( the powders are not interchangeable!) I just read 4831 my mistake for sure, I wish there were not two 4831, 4350 and 1000s number designation but there are. A very dangerous and stupid mistake on my part but it happened. There is not a load listed for 78.5 grains of IMR with a 300-grain bullet. This was a mistake I will not make again but the cases showed no stress easy to eject and was very accurate. IMR is a faster burning powder so the pressure will build faster but should be less than H4831 for a shorter time). I shared this so maybe someone else will not make the same mistake.</p></blockquote><p></p>
[QUOTE="Steve Sheasly, post: 1669544, member: 103826"] Recently I have developed loads for the following calibers and manufacturers: 340 Weatherby Mark V USA --- 300 gr. Accubonds 78.5 of IMR 4831 .040 off lands 1/2inch groups at 100 yards** .338 Lapua Savage 300 gr. Accubonds Max load of H1000 .040 off lands 1-inch groups at 300 yards 300 win mag Browning Xbolt 200 gr. Eld-X max load IMR .020 off 1/2 inch groups 100 yards 264 win mag 140 gr interlock 57 gr. H-1000 1/4 groups at 100 yards. ( the .264 is a 1:10 twist VLD high BC long bullets will not stabilize shoots interlocks well if I wanted this gun to compete with a 6.5 Creedmore I would re-barrel to 1:9.25) So it depends on the powder, bullet, and gun. Accubonds typically like more jump but **Note: on the 340 I used the IMR for H 4831( the powders are not interchangeable!) I just read 4831 my mistake for sure, I wish there were not two 4831, 4350 and 1000s number designation but there are. A very dangerous and stupid mistake on my part but it happened. There is not a load listed for 78.5 grains of IMR with a 300-grain bullet. This was a mistake I will not make again but the cases showed no stress easy to eject and was very accurate. IMR is a faster burning powder so the pressure will build faster but should be less than H4831 for a shorter time). I shared this so maybe someone else will not make the same mistake. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet touching the lands or 2000th back?
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