Has anyone had this done? Did you like the results?
Thanks.

There’s a member on here who goes by the screen name Full3r who has a Marlin bored to .375 Winchester, which is a similar caliber, and he loves it. As soon as I find a worthy 30-30, I’m sending it to get bored over into a .375 Winchester.

I've thought about going to a .375. Some folks shoot 38-55 in a .375 Winch, which I would want to do since I have a ton of 38-55 ammo and brass. Or I might just load hot 38-55 ammo.

I have had 2 rebored to 38-55 by JES and have been very pleased with both.

IIRC, Weagle had a Marlin 336 rebored from 30-30 to 375 by JES and has posted positive reviews.

I have a Marlin 30AS rebored to 356 Winchester by JES and I love it. He is good, fast and reasonable. Highly recommended!

I've got a Marlin TK down in Cottage Grove now for re-education from .30-30 to .444. He's done several 9.3x62 jobs for me and I've heard nothing but positive for his work turning .30-30s into 38-55/.375/.444s

Marlin Tk's are not common rifle's and generally bring a premium $$. If you desire a short barreled Marlin in .444 the Marlin 336 Sc or 20-inch sporter carbine model would be a wiser choice as the sporter carbine models have a larger diameter barrel with very little taper much unlike the full-length tube models or Glenfield model 30 or 36 models from the 60's.

Just my .02 cents for whatever that's worth.

What rifles do you have now in .38-55?

That trim barrel is exactly why it's getting made into a .444. This rifle is going to be carried alot and where I live needs more power than what a .30-30 provides. Ballistically I'm ending up with a .405 Winchester 336 which will weigh about 6.5 lbs. I'm also putting walnut stocks on it, so take that.

Winchester 1885 with a 22 inch barrel. Ammo seems to last a long time with a single shot.

30TK to .375 Winchester is the way to go. Jes did mine and I love it. If I'm not mistaken JES said it was no problem shooting 38-55 through it also. I only shoot .375 because I have plenty of it. The 30tk is an awesome configuration, short barrel, short mag tube, straight stock, barrel band. It they had walnut stocks they'd be perfect If I find another one, I'm thinking about a .356 win.

I'm going to convert the barrel band to a forend cap on my .444 when it comes back due to recoil. I found the screw which retains the band on my TK bent from mere .30-30 recoil. Weagle, it's not too hard to find an old walnut marlin forend and stock to fit to your .375. I scrounged an old one which fits fine. It just needs slimmed down to the proper TK dimensions!

My JES rebore, a 1870-1970 Commemorative. A nice, accurate rifle that has not had a jacketed bullet through it since the rebore.

Ok,,,, FWIW, I've been Shooting a Marlin 336-.375 Win. since 1978-79, bought New @ Umpqua Gun Store, Roseburg Or. Attachments Below;
LJ

JES did my Marlin 30AS and has been great, deadly accurate with 250 gr pb boolits!

I really appreciate all the feedback. Sounds like I should get that project done!
Happy holidays!

I just picked up another 336 in 30-30. It’s going to get sent off to be rebored to 375 Winchester.

I had my M1894 in .30-30 rebored to .38-55 over forty years ago by P.O. Ackley. It turned out great and it killed a bunch of Kodiak Island blacktails. I used several bullets depending on what was made at the time and started with the Speer 235 with filed tip, then a 240-grain cast, and finally the Hornady 220FN. All shot and killed well, the Hornady did best. After all these years it is still a favorite rifle.


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Very nice and I love those Sitka deer.

I’ve had two rebored by Al Siegrist, he does excellent work at a reasonable price. They have consistently been very accurate. Mine current one does 1.25 MOA or better with a 220 gr. cast bullet from a mold I designed from Mountain Molds. I’m pushing it at 1750 and it’s given complete penetration lengthwise on two white tails.

Old70