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120 Posts
Love to tap into the group wisdom for a fairly new loader...
Been leaning loading for my .243, 30-30 and my 30-06 this year
Have mostly worked on the .243 and have developed loads w/ 3 different powders that shoot all about the same fps w/ nice groupings @ 100 yrs w/ a 100gr BTSP. I was felling pretty good about my learning...
Now... I have been working on the 30-06 (165gr BTSP loads)
I have now worked up a good load of IMR 4350 @ ~ 2900-2950fps w/ a good consistent grouping @ 100yrds.
A couple of very experienced loaders suggested I try the H4350 or the H4895 on both the .243 and the 30-06.... so I did....
Both the H3450 and the H4895 would only preform ~200fps slower on the .243 and ~300fps slower on the 30-06 before it flattened primers.
I really did not expect that much of a difference in FPS vs. pressure issues, especially between the IMR4350 and the H4350.
My mentors gave great reviews of performance for both of these H powders that I am not being able to duplicate w/o real pressure signs.
Both of the mentors have different brands of .243 and 30-06.
Can the difference in the make of a rifle cause that much variance in pressure issue w/ a load?
I have also tried IMR 4320, 4064 and 4007SSC. All of these had to fly at lower fps then the IMR 4350 to avoid pressure signs and/or keep a good grouping.
Don't have a problem settling on the IMR3450 if that's just what it likes... but want to be sure I'm not missing something.
Another learning curve... while I'm rolling...
For my 30-30, I was playing w/ off the shelf brand of 170grs. My Marlin 336 flings these all over the place @100yrs - really it's not me... I had my mentors try it....
I found I could really tighten the 170gr rounds if I load my own so they fly ~150fps slower than the factory loads.
I decided to try the 150grs....
it LOVES a 150gr off the shelf and my hand loads. The H4895 worked very well w/ 150gr @~2400+fps w/ a very good grouping @100yrds.
Thanks!!
Been leaning loading for my .243, 30-30 and my 30-06 this year
Have mostly worked on the .243 and have developed loads w/ 3 different powders that shoot all about the same fps w/ nice groupings @ 100 yrs w/ a 100gr BTSP. I was felling pretty good about my learning...
Now... I have been working on the 30-06 (165gr BTSP loads)
I have now worked up a good load of IMR 4350 @ ~ 2900-2950fps w/ a good consistent grouping @ 100yrds.
A couple of very experienced loaders suggested I try the H4350 or the H4895 on both the .243 and the 30-06.... so I did....
Both the H3450 and the H4895 would only preform ~200fps slower on the .243 and ~300fps slower on the 30-06 before it flattened primers.
I really did not expect that much of a difference in FPS vs. pressure issues, especially between the IMR4350 and the H4350.
My mentors gave great reviews of performance for both of these H powders that I am not being able to duplicate w/o real pressure signs.
Both of the mentors have different brands of .243 and 30-06.
Can the difference in the make of a rifle cause that much variance in pressure issue w/ a load?
I have also tried IMR 4320, 4064 and 4007SSC. All of these had to fly at lower fps then the IMR 4350 to avoid pressure signs and/or keep a good grouping.
Don't have a problem settling on the IMR3450 if that's just what it likes... but want to be sure I'm not missing something.
Another learning curve... while I'm rolling...
For my 30-30, I was playing w/ off the shelf brand of 170grs. My Marlin 336 flings these all over the place @100yrs - really it's not me... I had my mentors try it....
I found I could really tighten the 170gr rounds if I load my own so they fly ~150fps slower than the factory loads.
I decided to try the 150grs....
it LOVES a 150gr off the shelf and my hand loads. The H4895 worked very well w/ 150gr @~2400+fps w/ a very good grouping @100yrds.
Thanks!!