I’ve recently taken an interest in reloading for the .300 Holland & Holland Magnum, and I’m aiming to get the best performance possible out of my loads. I’ve read quite a bit, but there’s a lot of conflicting information out there, and I could really use some help from anyone who’s spent time developing their own loads for this caliber.
What I’m After:
Bullet Weights: What weights have you found work best for different applications, such as hunting versus target shooting?
Powder Recommendations: I’m looking to understand which types of powder yield good velocity without sacrificing accuracy. Any specific brands or types you swear by?
Load Development Tips: If you’ve got any methods you follow while developing your loads or if you encountered any issues along the way, I’d love to hear about your experiences.
Additional Considerations
Primers: Are there specific primers that work best with your chosen powders?
COAL (Cartridge Overall Length): What kind of COAL have you had the best luck with for reliability and accuracy?
Weather Conditions: Do you take specific environmental factors into account when reloading?
Just trying to piece all this together for improved consistency and performance. Thanks in advance for any insights, and I look forward to hearing what you all have to share!
I’m excited to see this topic! The .300 H&H Magnum is such a versatile cartridge. For general use, I recommend starting with 200-grain bullets and using H4831 or RL22 powder. It tends to produce great velocity and accuracy!
Thanks for the tip! I’ve had success with 180-grain bullets for deer hunting. It gives a good speed boost and works well with Magpro powder if you’re looking for something different.
Has anyone tried using the 220-grain bullets? I’ve read mixed reviews, but I’m curious if they are worth the extra recoil when hunting larger game. What powders work well with that weight?
I’ve experimented with several powders. IMR 4350 has been consistent for me across different bullet weights. But if you want to fine-tune, I suggest testing a few kinds at the range.
For lighter loads, I’ve had great success with 150-grain bullets, too. It’s a lot less recoil, perfect for plinking. Anyone else have thoughts on using lighter weights?
Does anyone have any resources or manuals they recommend for more detailed load data? I want to ensure I’m covering all bases as I experiment with my loads.
Speaking of visuals, has anyone seen videos comparing the performance of different loads? I think it would be fascinating to see actual impacts on targets.