Griswold
04-27-2024, 05:45 PM
I've been loading up for my Uberti 73 Win a mess of 44-40's based on information I gathered on this site.
I'm using Extreme hard cast lead Bullets, 200g rnf sized to .430", over 24.7g of IMR4198.....starline brass, win large pistol primers.
I tried a few loads with 25.5g and they were accurate but I didn't want to get that close to the max load with 1512 f/s. (200g rnf sized to .429" Oregon Lazer cast) Info from 44 wcf I believe.
Now, last night I came across some old threads where one fellow (didn't note his hame or handle) who was only achieving 1300 with 25g but I didn't see what dia. bullet he was using.
And to add to my confusion, there's a video on Utube where a fellow was using H4198 and achieving over 1500 f/s with 25.5g of that powder. Which I understand burns even slower than the IMR4198.
I was thinking (not normally a smart thing for me to do) that I'd get around the high 13's or low 1400+ f/s with my loads using the tighter fitting projectile.
So my question is: using a .430", will that increase the pressures significantly and velocity? Or Not?
I'm using Extreme hard cast lead Bullets, 200g rnf sized to .430", over 24.7g of IMR4198.....starline brass, win large pistol primers.
I tried a few loads with 25.5g and they were accurate but I didn't want to get that close to the max load with 1512 f/s. (200g rnf sized to .429" Oregon Lazer cast) Info from 44 wcf I believe.
Now, last night I came across some old threads where one fellow (didn't note his hame or handle) who was only achieving 1300 with 25g but I didn't see what dia. bullet he was using.
And to add to my confusion, there's a video on Utube where a fellow was using H4198 and achieving over 1500 f/s with 25.5g of that powder. Which I understand burns even slower than the IMR4198.
I was thinking (not normally a smart thing for me to do) that I'd get around the high 13's or low 1400+ f/s with my loads using the tighter fitting projectile.
So my question is: using a .430", will that increase the pressures significantly and velocity? Or Not?