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Rifles, Reloading, Optics, Equipment
Reloading
7mm RM/140 AB with H4350/H4831SC/H1000/Retumbo?
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<blockquote data-quote="SakoShooterSD" data-source="post: 515841" data-attributes="member: 33931"><p>+1 on visiting Hodgdon.com.</p><p>If I had done that before, instead of just reading the Barnes Reloading Manual (and getting input from the Sierra manual) I would have chosen a different powder. </p><p></p><p>I am shooting 150 gr TTSX bullets, and chose Retumbo.</p><p>GREAT accuracy (0.35" groups), and really good velocity (2964 fps) . . . but evidently not enough pressure to seal the case well enough -- I'm getting burnt powder residue on the outside of my case shoulders.</p><p>(maybe an issue with cold-worked brass, but this is only the 3rd reloading?)</p><p></p><p>H1000 would probably have been a better choice.</p><p>A little higher pressure for the starting loads, and no compressed loads at max charge. </p><p>I guess having compressed loads is not really a big issue, but I'd rather have a load density in the mid 90's, all else being equal.</p><p>(BTW, thank you, Hodgdon website for listing pressures, though . . .couldn't you have done them all in the same units? CUP? Really? </p><p>So now I have to hunt around for how to convert . . . and, yes, it can be done.)</p><p></p><p>The IMR 4831 also works very well in my gun (and might be a better choice if I were shooting lighter bullets), but the pressure is nearer the max, and the velocities have not been as consistent for me . . . though accuracy is good. (1/2" groups)</p><p></p><p></p><p>So . . . Preventec . . . enLIGHTen us; why are lighter bullets better? </p><p>Do you just like the flatter trajectory? </p><p>I'm going Elk and Mule Deer hunting with my 7mm Rem Mag, and a 150 gr TTSX seemed like a good choice.</p><p></p><p>If I were shooting 110 gr bullets, I might grab my Dad's 270 WSM instead . . .</p></blockquote><p></p>
[QUOTE="SakoShooterSD, post: 515841, member: 33931"] +1 on visiting Hodgdon.com. If I had done that before, instead of just reading the Barnes Reloading Manual (and getting input from the Sierra manual) I would have chosen a different powder. I am shooting 150 gr TTSX bullets, and chose Retumbo. GREAT accuracy (0.35" groups), and really good velocity (2964 fps) . . . but evidently not enough pressure to seal the case well enough -- I'm getting burnt powder residue on the outside of my case shoulders. (maybe an issue with cold-worked brass, but this is only the 3rd reloading?) H1000 would probably have been a better choice. A little higher pressure for the starting loads, and no compressed loads at max charge. I guess having compressed loads is not really a big issue, but I'd rather have a load density in the mid 90's, all else being equal. (BTW, thank you, Hodgdon website for listing pressures, though . . .couldn't you have done them all in the same units? CUP? Really? So now I have to hunt around for how to convert . . . and, yes, it can be done.) The IMR 4831 also works very well in my gun (and might be a better choice if I were shooting lighter bullets), but the pressure is nearer the max, and the velocities have not been as consistent for me . . . though accuracy is good. (1/2" groups) So . . . Preventec . . . enLIGHTen us; why are lighter bullets better? Do you just like the flatter trajectory? I'm going Elk and Mule Deer hunting with my 7mm Rem Mag, and a 150 gr TTSX seemed like a good choice. If I were shooting 110 gr bullets, I might grab my Dad's 270 WSM instead . . . [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7mm RM/140 AB with H4350/H4831SC/H1000/Retumbo?
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