I cast my own and shoot them in my 1895 with no leading at all.
I got to shoot my new to me marlin 1895 today and put 30rds. of my plinking load through it. I used .459 405gr over 30 grs. of IMR 4198, (which has worked well for me in an H&R Buffalo Classic and a Ruger No.3)and got the ever so teensiest amount of leading that came right out with a good cleaning. I've heard alot of complaints about lead bullets with microgroove but I've also heard great success stories from those who used .459 bullets under 1500fps. This load should be 1300-1400 fps depending upon source I can't say for sure because a chronograph is still on my must buy list. I'm new to shooting cast in rifles but have been doing it in handguns for several years, and I've had old timers tell me that if you get it just right they'll be no leading at all. Others have told me that leading is a part of life so I don't know what to think. Anyone have any sucess using cast in a microgroove barrel?
My 45-70 micro groove shoots just under an inch at 100y with a tang sight with my cast loads if I do my part. They are sized .4595 (it won't chamber anything bigger), are 350gr (from an Accurate Mold) and have a homemade aluminium gas check. They're pushed by 36gr H4895 behind about 1gr of dacron filler. I think they're travelling around 1300 fps. I haven't tried a stouter load yet because I only hunt deer pigs and goats and roos so don't need one. But if I go north for some water buffalo, scrub bulls or camels I'll really stoke them.
I'm sure you'll be able to eliminate the leading, it just might take some fiddling.
Last edited by 1640hunter; 12-14-2012 at 07:23 PM.
Use gas checks and heat treated bullets sized as near .460 as you can get'em, and you'll never have any leading and push'em until your shoulder tells you to quit....
After that fun you'll be back to 1300-1500 fps..... But no leading either.
Salvaging old Marlins is not a past time ... It's a passion.
Mostly 1893 through 1959 Marlin levers, short carbines to long rifles.
Most models and variations in calibers
30/30, .308, .32, .35, .357, .45 Colt, 45/70 (a few)...
Cast and reload for 'em all, hunt year round.
I don't have any trouble with ether one of my 45/70s and i don't think you need a really hard bullet if you stay around 1600 fps a gas check would be nice but not really needed its up to you bullet fit is more important then bullet hardness that has been my experience anyway .
I should have mentioned I don't cast my own do to a lack of space and time. I bought these from cbbullets.com on recommendation from several guys at my lgs. I originally ordered them for my H&R buffalo classic and they were supposedly sized .458, but after checking them they actually mic at .4595-.460 with a BHN of 18. So I'm not sure if maybe there not quite hard enough or maybe my bore is way oversize. I'm only noticing this little bit of leading in the last 2-3" of the barrel and I never noticed a loss in accuracy.
those bullets sound about right ,I have had a smith and Wesson 629 shooting a quenched 250 gr RCBS 44-250-k do the same thing at around 1300 fps and as soon as i went to a little softer alloy bullet the problem went away .I have no problem with a 45/70 i have a GG and a 1977 22 inch 1895 and i don't have any problems with ether one .let us no how things turn out .