cracker wrote:SCJ429 wrote:A bit more not a lot more. The 458 is no powerhouse either. The 450 Rigby sends a 600 grain projectile faster than the 458 can send a 400 grain.
45/70
300 (strong) JHP 2,275 ft/s (693 m/s) 3,449 ft⋅lbf (4,676 J)
458winmag
400 gr (26 g) FN 2,468 ft/s (752 m/s) 5,411 ft⋅lbf (7,336 J)
theres abit in it...
best thing about 458 winmag is getting it reamed to 458 lott, only reason i brought one.
450 rigby sounds like abit of a power house too, just too much alike to what iv allready got.
You need to compare apples with apples or you flatter the 458. The 45/70 shoots a 300 grain pill at 2550 fps, at least my Ruger #1 does, the 458 can squeeze 2750 fps out of it.
You are right about getting a 458 Lott reamer to smarten up the old 458. For me a 45/120 looks much cooler if you want to do the same for your 45/70 chamber. As long as you are having fun with your big bore who cares if someone else can send them a bit quicker.