Ken Campbell Iowa
posted this
09 February 2023
possble but not lkely ... i assume these are plain base, no gas check ... about the top end for no gas check bullets is about 1500 fps .... and at that pressure, with no gc, they will probably slowly leave a little leading ... keep ahead of this and you can easily brush out these flecks. at 1300 fps or so with a decent lube and you can shoot forever a with light brushing every couple dozen .
with gas checks, the bullet is probably good for 2200 ... but your pressure is getting high for cast in the 35 Rem ... I would try for it, but it would need some testing before i would depend on it. you are up around 40,000 psi with 3031. If you are wanting to hunt deer with this, remember that backing off to maybe 35 grains of 3031 with a good flatnose 35 cal. casting will still flatten a deer just fine.
If you decide you need a little more speed, you might consider going to a slightly slower powder ... 4895 would be my choice ...it would be more gentle on the bullet ... if you can get enough in that nice 35 Rem case to get 2200 ...
AND ... as mention in other posts ...to get top velocities, the bullet fit is everything ... the rear ... groove diamter * MUST * be close to throat ( not just barrel muzzle ) diameter to seal that hot gas ...
AND ...for best accuracy, the nose must be pretty close to barrel bore ( as at the muzzle ) diameter ... the nose isn't so important at 1200 fps but everything is important at 1700 and up ...
let us know how things go .. i am building a 35 ( whelen ... but not really different ) and will be getting into the same fun things as you ...
oh, and as for buying commercial bullets ... hah, i consider shooting my 30-06's kinda boring ... so a few years ago i started buying commercial cast for 30-06, 308, 300 Sav. plinking ... coming up on my 2000 th 30 cal. pop can load this very evening ... mostly Badman's bullets. But ... if i want to get under 2 ma, I have to measure my chamber.. and throat ... and find a mold ... or size the bullet ... to get a snug fit on back and front of bullet. and even my 7 or 10 grain Unique popgun loads will lead a little if the rear ends are too loose.
hope this helps.
ken