Daryl
I know that the softer bullets are normally considered to be more accurate in the older guns and ML.
What do you consider to be hard?
My current load with my original Rigby LRML uses 86 grains of 2 F swiss and bullets that are 16/1 ratio lead/tin. Very hard for the ML crowd. The reason for the harder bullet is that with such a pointed nose I dont want the nose to slump. I have no evidence that it would or does slump with less tin or that it does not slump with 1/16.
The picture shows 3 bullets, the one on the left is the standard government style, middle what is called a creedmore and the right one is a custom design that a friend designed. The PP bullet has a really pointed nose for ML shooters as well.
I have been shooting the PP in the Rigby for the 2 years that I have owned it.
Last year at the world matches at 900 yards with the harder bullet and 75 grains of 2 f swiss I set a new world record with 67 3V the old record for an original rifle was I think 63. I also beat the world record score for a reproduction rifle that score is 67 2V. Course of fire is 15 shots, 5 points down to 1 point for bullets score.
The next day at 1,000 yards I had a bad relay. You could not catch the changes that were going on down range and I had 2 shots that scored zero. In hindsight I think that my load of 75 grains was not giving me enough velocity downrange and my bullets were to unstable to push through the small changes that were happening that we could not see. The thought is that you should be at or above 1300 fps as the bullet leaves the rifle.
Larger charges with this gun gave me terrible groups at 100 yards of around 2.5". The rifle really liked 70 grains and that is what I shot at the shorter ranges, and my accuracy was worse with 75 grains. But I needed the speed for 900 and 1,000 yards.
So, this year I had several sessions at the range to try and figure out how to get this rifle to shoot more accurately with a larger charge. I use 86 grains of 2 f swiss in my other LRML and wanted to stick with that charge if possible. Keeps things easier for me. I pre weight each powder charge at home before matches and being able to have the same charge for several rifles is great.
What I found is that with the right wad combination I was able to get my 100 yard groups to one inch or better using the 86 grains of powder, and that my bullets are right at 1300 fps. I dont remember my standard deviation but it was very low. This load is more accurate than the 70 grain load.
Since I dont have any ranges to shoot past 300 yards my final proving of a load is going to a match and seeing what it can do.
This year at Oak Ridge TN I shot the Rigby with the new load. Coarse of fire is 200, 300, 600 and 1,000 yards. At 1,000 I won the match. I also won 2nd in the agg. My friend that designed the bullet was 5 points better than me for the agg and I think 3rd place was around 12 or 13 points behind me.
My friend shoots a reproduction rifle and also shoots the same hard bullet.
Fleener