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Discussion Starter · #1 · (Edited)
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... :D

Now... I have been working on the 30-06 (165gr BTSP loads) :confused:

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!!
 

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Discussion Starter · #4 · (Edited)
Hey Guys,

Thanks for the notes! I wrote my post during a break at work earlier today. After reading boom_jm's post I double checked my notes when I got home.

I miss noted my FPS on the 30-06. W/ 57.5 gr of IMR4350 / 165gr Speer BTSP, I averaged 2820fps w/ a high of 10rds at 2900fps.

As a follow up to Racky Raab:

My mentor suggested that I set the OAL of an uncharged round to my rifle by setting the depth of the bullet in the casing w/ the rifle bolt and then using that round as to set my die and adding ~ 1/4 turn deeper to the die set. His take on the practice is that it help insure better accuracy for my rifle by minimizing the distance in the chamber before the slug hits the rifling.... Is this a good practice?

My hand load rounds chamber fine but they are ~ 1/8 longer than any factory loads I have. Can that fraction of time difference before the bullet hits the resistance of the rifling be contributing to the pressure differences?
 

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Discussion Starter · #8 ·
Okay, this is gives me some more to "play" with!

While I have no problem of making the IMR 4350 my primary 30-06 powder, but as noted, I'd like to be sure as well as have a back up powder that is close....

I look forward to playing w/ what I have learned now about fine tuning w/ the depth set...

the whole OCW site info = good stuff! I will back up a bit and revisit some of my work ups for the .243.

I just checked some of my 30-06 rounds.....

Max OAL of 3.340" (Lyman Reloading Handbook)

The few Federal 150 gr factory loads I still have are an OAL of 3.204" - these nail a good grouping at 100yrds! I've not checked their vol....

My first factory loads were w/ Rem Core Lokts 165gr set by my mentor's methods are at 3.284" - still have about 50 rds. This was a "rush" set I did early on and have only played w/ them. The fly well, but I wanted to do better.

When I tried to load the Speer BTSP 165gr at the same setting on my dies, I had to give another near 1/2 turn on the large threads to get the longer tip of the BTSP to not hit the lands (learned a new term - thanks!). The rounds I've been working w/ the noted powders have been set a OAL right near the max of 3.338 (not intentionally....).

Would trying to seat the BTSP a bit deeper in small increments as noted help allow a bit better "play room" w/ the other powder pressure options?
 

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Discussion Starter · #10 ·
Rocky, Will dig in the PM... thanks for the shared knowledge!

Backing out the scope of the question...

W/ very superficial evidence so far ... both my 30-30 and my 30-06 seem to "handle" 150gr bullets easier (with less tweaking effort) than the 170gr (30-30) and the 165gr (30-06).

I have focused on the 170gr and the 165gr for both rifles because of my mentor's recommendations. Understanding that all guns very in how they handle bullets and loads I knew starting w/ his bullet types might be only a starting point.

I have the 30-30 for two reasons: 1) A lot of my dear hunting is in the heavily wooded foot hills of SW OR and 2) I JUST WANTED A COOL LEVER ACTION! I have the 30-06 w/ the idea of a basic heavier rifle w/ a good reach ability. Plus... both were good buys at the time and I figured good places to start learning.

Thinking largely SW Oregon black tail deer, the persistent chicken eating black bear and hopefully some day - an elk or two...

Besides the benefits of the learning and practice time involved, is the advantages of the slightly heaver bullets (170 and 165) worth the effort to tweak them in to submission to my rifles or is there enough "get the job done" in the 150gr rounds for both rifles to just accept a path of least resistance and work on the 150gr rounds?
 
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