Apparently they shipped to several vendors, lots available online today. Just ordered 3lbs from Midway for $125 shipped. That’s cheaper than I could have gotten it locally when available.
I was thinking the same thing, when my bottle of Blackhorn is used up I am done with it. For me it doesn’t do anything at 100 yards that Pyrodex doesn’t do.
If you take a black sharpie and completely cover the bullet and case it may show you where your issue is when you chamber the round. Shiney spot would be where your issue is.
I try to rotate several throughout the short season we have here in WV. On antlerless hunts I like my smaller calibers 25 and under especially on morning hunts, evening hunt get a 30 caliber and rainy wet weather get the 45/70. I have several #1’s in the safe that have never been had a round...
I see you have IMR 4350 . I use 41.5 grs with a 95gr NBT in my Ruger #1 and it shoots under an inch. Ran out of time before season last year and never chased it any further. It was just a load to zero a scope I threw together. The 95gr bullet is nasty on deer vitals.
I would have to buy that rifle. #1 in 300 H&H is on the short list. Haven’t seen one at a decent price in a while. Just got a 1B in 30-06 that may get converted to 300 H&H if I can’t find one soon.