I know that fella
No need for an apology, this stuff is fairly new and the word hasn't gotten out so to speak.
If you are talking about those Old White 1-3/4oz #6 H13s, those were some awesome shells. I still have about 14 boxes of them and they commonly shoot around 215 in a 10 at 40 with a few going 225, 234, and 242. Not bad for a mere 1-3/4oz of 6 shot. Those shells actually out pattern the newer Hevi 13 loads for me, even the 3.5" loads. Since the Old Whites stop being produced, it sort of sparked my handloading project.
Hevi 13 has a slower velocity and often chronos from 975-1100 fps with most going around 1030 IME. I wanted to produce loads that outpatterned them with more speed. I finally settled on a 3" handload with only 1-3/4oz of #6 hevishot that was averaging mid 220s from short 23" bbl Remingtons at 1200 fps. That was better than any factory ammo I could find(I bought 100s of dollars of the best on the market), so my goal had been reached with a nice light recoiling 3" load that outperformed all factory ammo. Then, I started loading 3.5 loads to see how they compared to the ultimate ammo available to the public, Nitro Ammo Co. That challenge resulted in a 2.25" 6x7 hevi load(1240fps) that averages 390s in the 23" bbl 870SM and a 2.25oz straight 7 hevi load that goes around 415 from the 23" 870SMs and over 500 with the 835. The 835 will hands down outpattern an 870, but I just don't care to hunt with my 835 as it's been very undependable. It will make my handloads really shine, but I prefer to hunt with my Remington 23" bbld guns, so I primarily test in them. I also developed a 1-3/4 oz 3" straight hevi 7 load along the way that averages 320s in a 10 at 40 from 23" bbls. Longer bbls commonly pattern better, but I prefer to test from the short bbl guns I hunt with. Those 3.5s blew Nitros out of the water, so my goals were met and I feel the loads turned out well. It's been an expensive, but pretty productive project.
Have a Good One,
loder
