Hello Everyone:
I just purchased and Encore 375 H&H Mag barrel with Lee Pacesetter 3-die set and Lee Neck Sizer 2-die set from someone on the Nossler reloading website. Not sure what I intend to hunt with this caliber, but to good of a deal to pass up. I already own 308 and 30-06 calibers in Encore and reload for these. Note, everything I hunt in East Tennessee is susceptible to 30-06 and 308 calibers and I do not have the opportunity to hunt out West. However, I am uncertain where to begin with reloading for the 375, and not just because it is a “belted” magnum. I have found that with the Encore just neck resizing is insufficient as the case will continue to lengthen and eventually loose the 0.001-0.002 inch clearance between the case head and rear breech face. On the SAAMI website there are clear datum lines and diameters listed for the 308 and 30-06 calibers (1.634/0.400 inches for 308) and (2.0256/0.375 for 30-06). So I occasionally full-length resize all my 30-06 and 308 cases taking care to make sure I am not pushing my shoulders back beyond the above datum lines. My experience in the past with the Encore has been that pushing the shoulders back beyond these above datum lines results in head failure. I see no such information for the 375 H&H Mag on the SAAMI website. So the question is what is a good datum line and diameter to start with for the 375 H&H Mag caliber when full-length resizing? I have read that some use 2.464 inches with 0.420 diameter as a starting point. Comments?
PCP
I just purchased and Encore 375 H&H Mag barrel with Lee Pacesetter 3-die set and Lee Neck Sizer 2-die set from someone on the Nossler reloading website. Not sure what I intend to hunt with this caliber, but to good of a deal to pass up. I already own 308 and 30-06 calibers in Encore and reload for these. Note, everything I hunt in East Tennessee is susceptible to 30-06 and 308 calibers and I do not have the opportunity to hunt out West. However, I am uncertain where to begin with reloading for the 375, and not just because it is a “belted” magnum. I have found that with the Encore just neck resizing is insufficient as the case will continue to lengthen and eventually loose the 0.001-0.002 inch clearance between the case head and rear breech face. On the SAAMI website there are clear datum lines and diameters listed for the 308 and 30-06 calibers (1.634/0.400 inches for 308) and (2.0256/0.375 for 30-06). So I occasionally full-length resize all my 30-06 and 308 cases taking care to make sure I am not pushing my shoulders back beyond the above datum lines. My experience in the past with the Encore has been that pushing the shoulders back beyond these above datum lines results in head failure. I see no such information for the 375 H&H Mag on the SAAMI website. So the question is what is a good datum line and diameter to start with for the 375 H&H Mag caliber when full-length resizing? I have read that some use 2.464 inches with 0.420 diameter as a starting point. Comments?
PCP