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Discussion Starter · #1 ·
I've searched the web for some info on this conversion - I was wondering if we had any updates from those of you who've gone this route in a 336 in terms of success, failure, regrets, or validations of the project. I'm especially interested in your results ballistically in terms of bullet weight and velocity and loads. Please feel free to PM with specifics if you prefer - thanks!!!!! MG
 

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I found it MUCH easier to go from 30-30 to 356 Win.
 

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I just started load development for my 356w conversion from 30-30. It is a Marlin 30AS conversion by JES. It has an 18" 5 groove rifled barrel and is topped with a Leupold 3-9x33 compact scope. Here is a link to the rifle build if you have not read it yet.

http://www.marlinowners.com/forum/3...ng-little-sister-my-jm-gbl-pics-included.html

Components on hand to use:
Speer HCFN 220gr
Speer HCFN 180gr
New Winchester brass
WLRM primers
WLR primers
H-322 powder
H-4198 powder
Aa2520 powder

I set the COAL at 2.57 which may be just a little short but the feed and function so far is excellent. It is without question the smoothest, slickest rifle I own.

My starting load which I will shoot over the chronograph this afternoon will be with 40gr of H-322 behind the 220gr Speer to get a feeling for how the rifle is going to handle. My goal is to develop a load that is accurate with the 220gr bullet at velocities of 2300 fps. So far I am very pleased with the results of the rifle. Of course the final and most important test will be how accurate it shoots.
 

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shot some loads this evening all using the 220gr Speer HCFP:

40.0 grains of H-322 got me an average of 2243 FPS
41.0 grains of H-322 got me an average of 2265 FPS

recoil was not all that bad.
 

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All the guts in the 30-30 are correct for the 356, the 35 Remington will require a new bolt or extensive mods to make it work with the bigger rim, and like Nodrama I sent my 30A to JES, within a week and for $250 I had a working 356 Win in a 336.:biggrin:
 

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Discussion Starter · #8 ·
So for those of you who went the 35r conversion route, did you end up with a 358 (rimless) o 356 (rimmed)? If you go the 30/30 route must you say with the 356 because of the rimmed nature of the 30/30 to begin with?
 
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