Re: pulled 30 cal bullets
Well, they make .308 and .311 for a reason.... It's not a safe area with any mid pressure (so forget full pressure) load.
But, I had a lot of So African 7.62 x 39. Most beautiful stuff I've ever had in that cartridge. It just didn't like my launcher. Six inches at 50 yd and the rifle normally ALWAYS held 3 in at 100. I pulled a lot of it and replaced the bullet with a .311 123 gn Hornady. Then it shot good. Being cheap, I then tried to use the pulls (.3095+) in a .30-06. They shot very well. The load was about an 80% of max Aliant 2400 load. Sometimes I'd dump the powder charge (from the 7.62x39) into the .30-06 and got 2050 fps with it. Very accurate. These seamed very low pressure with nicely rounded primers still.
This was a long answer to say, I've used the "large 30" JACKETED bullets but they were very light with SHORT BEARING SURFACE for the bore size. Your pulled 7.62 x 54 are VERY LONG. They are compareable in length to US M1 (M72 Match/M118 etc) FMJs give or take depending on their weight. It's going to really raise the stress level in your throat sizing them down even in a low pressure load.
Consider this: Cast bullets are often .001 to .002 oversize. But very few casters go .003 oversize (agreed, it's many reasons other than presure/safety).
I think with most bullets you're delving too far into the unknown (and I have considered it whan all that 7.62x54 was arond still at .10/round prices compared to .60+ for loaded .30-06/.308Win etc). The price motivation is greater today, but at best it's unnecessary wear on the troat and an open doorway to excess pressures.