The Truth is, I can’t tell you if i can see a difference or not? I have never Tested the difference on Paper Between Weighed in Grains, and Volume Measured?
I like to shoot Long Range for Fun. Accuracy is EVERYTHING to me in this Hobby, i bench/target shoot more than anything, I STRIVE to Put Bullet inside of Bullet Hole, be it 100 Yards or 1,000 Yards. I do whatever i feel will get the ABSOLUTE Most out of my Rifles. That being said, i weigh my Powder charges in Grains, it has ALWAYS made the Best sense to me. This is Something i carried over from Reloading Precision Centerfire for over 30 Years. I have tested Volume measuring in Grain conversion LOTS of times, i have had Volume Be REALLY close a few times, and then be off 3-4 Grains another, I Simply Don’t trust Volume for Accuracy. I shoot Swiss Real Blackpowder, I believe the 3-4 Grains of Difference i have seen MANY times would Show over a Chronograph, how could it not? I Pre Weighing my Charges in Grains to the 1/10 is not only MUCH more Precise, i find it MUCH easier, When i get to the Field I don’t have to Mess with Weighing my Charges, they are already Done.
This is how i look at it. Would i trust my Precision Centerfire Rifle Handloads to “Close Enough” for Field use? ABSOLUTELY NOT!!! Why would i do so with my Muzzleloaders? After all, I am expecting the SAME TIP TOP Performance out of them as i am my Centerfire Rifles, Why would i Cut corners with my Muzzleloaders?