I am the proud owner of an original manufactured 91/30 PU and have been running mostly surplus ammo through it. While the rifle is fairly accurate, I know there's only so much I can get out of 50 year old soviet surplus. I was thinking of starting to do my own loads, but have been finding it difficult to find .311 ammo. I HAVE found some from budget shooter supply, but it says its for 303. I was wondering if I'm gonna run into issues running this in my rifle, either in terms of reliability, safety or accuracy. Thanks