IMR 4350 Load Data for .270 Win - Share Your Experience!

Ammunition & Reloading
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IMR 4350 Load Data for .270 Winchester: A Comprehensive Guide

Reloading ammunition can be both an art and a science, especially when you’re working with a popular caliber like the .270 Winchester. If you’re using IMR 4350 powder, you’re likely looking to optimize your loads for accuracy, consistency, and performance, whether for hunting or target shooting. Here’s a detailed breakdown to help you get started.

Understanding IMR 4350 Powder

IMR 4350 is a slow-burning powder known for its temperature stability and high-energy output, making it suitable for larger rifle cartridges like the .270 Win. It’s particularly favored for its ability to produce excellent accuracy and velocity when matched with the right bullet.

Recommended Bullet Weights

Different bullet weights can significantly impact the performance of your reload. Common bullet weights for .270 Win include:

  • 130 grains: Great for general-purpose hunting and target shooting.
  • 140 grains: A solid choice for larger game; balances velocity and energy.
  • 150 grains: More punch for larger animals and long-range shooting.

Suggested Load Data

Based on various sources and personal experiences shared in the community, here are some suggested load data points for IMR 4350 with different bullet weights:

For 130 Grain Bullets:

  • Starting Load: 55.0 grains of IMR 4350
  • Max Load: 59.0 grains of IMR 4350
  • Recommended OAL (Overall Length): 3.34 inches

For 140 Grain Bullets:

  • Starting Load: 54.0 grains of IMR 4350
  • Max Load: 58.0 grains of IMR 4350
  • Recommended OAL: 3.34 inches

For 150 Grain Bullets:

  • Starting Load: 53.0 grains of IMR 4350
  • Max Load: 57.0 grains of IMR 4350
  • Recommended OAL: 3.34 inches

Note: These loads are just starting points. Always cross-check with reliable reloading manuals and work up your loads carefully.

Tips for Successful Reloading

  1. Consistency is Key: Measure your powder charges carefully to ensure consistency across all rounds.
  2. Use Quality Components: Invest in good brass, bullets, and primers. This will help you achieve better accuracy.
  3. Temperature Considerations: Keep an eye on temperature changes; powder performance can vary with temperature fluctuations.
  4. Test and Adjust: Begin with the starting loads and gradually work up to find what works best in your firearm.

Conclusion

Reloading with IMR 4350 for the .270 Winchester can lead to fantastic results when you optimize your loads based on experience and precise measurements. I’m looking forward to hearing about your experiences with IMR 4350 and any load data you’ve discovered. Let’s share our best practices and make the most of our .270 Win setups!

Feel free to post your results, adjust the numbers based on your own testing, or ask any questions if you’re just getting started. Happy reloading!

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IMR 4350 is known for its consistent burn rate. For .270 Win, it can enhance accuracy significantly. I’ve had great results using it with 130 grain bullets at around 55 grains of powder.

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That’s great to hear! I’ve also found it to be quite temperature stable, which is a real plus when hunting in varying conditions.

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Temperature stability is crucial! I remember a trip where my loads performed excellently because of IMR 4350, despite the cold weather!

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Absolutely! It really shines in that area. Has anyone experimented with heavier bullets? Looking for load data myself.

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I’ve used IMR 4350 with 150 grain bullets and it was quite effective. You should start around 54 grains and work your way up carefully.

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That sounds helpful! I’ve had issues with inconsistency in my loads. Do you think IMR 4350 could help with that?

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Great info! I’d definitely like to learn more about the ideal seating depth with this powder as well.

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Seating depth is indeed pivotal. I’ve found that a jump of .050" works great with my setups using IMR 4350 for .270 Win.

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IMR powders are fantastic, but I’ve seen some debate over which is best for .270. What’s everyone’s experience with 4831 versus 4350?

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I prefer IMR 4350 for its versatility. It seems to handle humidity better too, at least from what I’ve observed.

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Humidity can be a real game changer! I usually test my loads in different seasons to gauge performance.

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Accuracy is key! I noticed my groups tightened up significantly when I switched to IMR 4350.

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IMR 4350 definitely deserves praise for accuracy! I often joke that it’s like my ‘magic potion’ for my .270 loads!

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Haha! It’s true! It does feel like that when you find that perfect load!

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Remember that experimenting is part of the fun! IMR 4350 can really give you confidence in the field. Just be patient.

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Exactly, daryl82! I’ve definitely learned a lot from my trials. It’s all about finding what works best for your rifle!

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IMR 4350 is a great choice for .270 Win! I’ve had excellent results with it. My best load was 54 grains with a 130-grain bullet. Make sure to weigh your charges for precision.

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Thanks for the tip! I’m considering starting with 54 grains. Did you use any specific bullet brand or type?

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I usually use Hornady bullets. They tend to pair well with IMR 4350 for consistent accuracy. Don’t forget to check your OAL as well!