Range Day - .30/06

[DrMike]

Nothing wrong with that group. That'll work.

 

[lhsako]

Velocity was 2724. I am going to try both the 4350s as the IMR shot great as well. Was using Fed 210 primers, but was wondering if might try a different brand just to spice things up
Any suggestions?

>>> great results, I,ve gotten top velocities w/ RL22 fyi.

 

[lhsako]

I run 57.0 grains of IMR 4350 with the 180 grain Barnes TTSX for 2724 fps.
I just switched to the new IMR 4451. I haven't chronographed it yet but I should be getting around 2670 fps with 54 grains of powder. I'm not showing pressure signs and the load is more accurate at 200 meters than my 4350 load. 2" versus 1.6" at 200 meters. At 100 meters the 4350 load puts three shots under a dime. Sadly that load doesn't hold together at longer ranges.
I'll retest the 4451 load and chronograph it in the next week or two. I'm wanting a more temperature stable powder than the IMR 4350 and the IMR 4451 looks to be it.

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> does accuracy suffer farther out vince? is the twist not stabilizing that long bullet perhaps?

 

[Vince]

I run 57.0 grains of IMR 4350 with the 180 grain Barnes TTSX for 2724 fps.
I just switched to the new IMR 4451. I haven't chronographed it yet but I should be getting around 2670 fps with 54 grains of powder. I'm not showing pressure signs and the load is more accurate at 200 meters than my 4350 load. 2" versus 1.6" at 200 meters. At 100 meters the 4350 load puts three shots under a dime. Sadly that load doesn't hold together at longer ranges.
I'll retest the 4451 load and chronograph it in the next week or two. I'm wanting a more temperature stable powder than the IMR 4350 and the IMR 4451 looks to be it.

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> does accuracy suffer farther out vince? is the twist not stabilizing that long bullet perhaps?

The twist is 1 in 10.
I think what's happening is that the imperfections in the load aren't showing up at 100 meters and the true accuracy is just starting to show at 200 meters.

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