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Post by Encore64 on Mar 9, 2024 17:15:00 GMT -5
Finally got around to shooting the New Old Model 30 Carbine.
Loaded it just like I do my New Model. But, it didn't care for the cast bullets. My N.M. shoots everything into tiny little groups. The O.M. would never get under 2".
I tried several cast and coated cast. It didn't like any of them.
So, I decided to try some jacketed bullets. Groups ranged 1-1.25" and nicely formed.
I checked and barrel wasn't leaded at all.
Any suggestions?
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Post by 2 Dogs on Mar 9, 2024 17:36:57 GMT -5
Might fire about 3 cylinders of firelap rounds to polish it up some.
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Post by Encore64 on Mar 9, 2024 18:07:10 GMT -5
Thanks Fermin...I'm going to slug the bore next. I know oversized groove barrels will generally frown on cast bullets.
Hopefully, I'll get this sorted out.
I've had guns that'll shoot and guns that wouldn't. But, this is a first for me.
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Post by Encore64 on Mar 9, 2024 18:19:37 GMT -5
So, I think I found the problem. Bore of gun is .301" and groove is a solid .310". Maybe a touch over.
That explains it from my experience. Jacketed .309" bullets shoot great...
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Post by needsmostuff on Mar 9, 2024 23:50:56 GMT -5
After opening my throats out to .309 I now size my .313 cast bullets (from 32mag/327FED) down to .309 with a Lee sizer in the single stage press.
Gives you a whole new world of bullets to try.
I also have a .308 sizer I don't use and was thinking about trying to open up to .310, Lee does not make one.
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Post by Encore64 on Mar 10, 2024 6:15:19 GMT -5
I also size 32 Caliber Bullets down to .309". It works great and many designs are available.
I don't want to get bullets too big for ammo to chamber.
Think I'll just stick with jacketed bullets in this one.
It's not a perfect world, so I don't mind flexing for such a nice gun...
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Post by rjm52 on Mar 10, 2024 6:30:57 GMT -5
Have an OM .30 Carbine that shoots the Accurate 31-120S 120 grain FP at 1480 and is just about as accurate as the jacketed reloads I have...
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Post by Encore64 on Mar 10, 2024 6:34:17 GMT -5
Have an OM .30 Carbine that shoots the Accurate 31-120S 120 grain FP at 1480 and is just about as accurate as the jacketed reloads I have... I was wondering if heavier (Longer) bullets might grab the rifling better. Thanks, I'll try it... |
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Post by ridenshoot on Mar 10, 2024 6:34:29 GMT -5
After opening my throats out to .309 I now size my .313 cast bullets (from 32mag/327FED) down to .309 with a Lee sizer in the single stage press. Gives you a whole new world of bullets to try. I also have a .308 sizer I don't use and was thinking about trying to open up to .310, Lee does not make one. Would this work? leeprecision.com/bullet-szr-punch-310 |
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Post by x101airborne on Mar 10, 2024 7:10:22 GMT -5
For a proper sizing die, contact NOE Moulds. Al makes a dandy sizing system and once you buy the die body, the inserts are cheap. Plus you can order custom sizes and pretty well bet on getting the correct diameter. Sounds like you have proper deep rifling in that one. Like you said, it is not a perfect world but I get spooky seeing a barrel that has scratches for rifling. A lot of them shoot great but it just throws my pea brain off when they are shallow rifled.
I feel like a putz for not shooting my OM 30 yet but for now it is just going to have to wait till I get time.
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Post by Encore64 on Mar 10, 2024 7:17:22 GMT -5
It's easy to hone a Lee .308" to .310". I'm just not sure that's a great solution.
Coated bullets shot better than traditional lubed cast. I'll try heavier bullets next and see how that works.
I'm not sure opening the throats to .310" is the path I want to take.
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Post by x101airborne on Mar 10, 2024 7:21:15 GMT -5
It's easy to hone a Lee .308" to .310". I'm just not sure that's a great solution. Coated bullets shot better than traditional lubed cast. I'll try heavier bullets next and see how that works. I'm not sure opening the throats to .310" is the path I want to take. Interesting Sir. Could you please elaborate as to why you would not want to? I would think opening the throats to .310 or even .311 would be an easy fix but maybe you have some experience I can learn from. Always looking to learn something from a different angle. Thank you. |
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Post by Encore64 on Mar 10, 2024 7:27:22 GMT -5
I'll have to pin gauge the chambers. But, my NM Chambers will not accept ammo with bullets over .309" seated in brass.
If the OM is similar, then opening throats is not an advantage.
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veeman
.240 Incinerator
Posts: 53
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Post by veeman on Mar 10, 2024 7:32:20 GMT -5
I don't see where you mention what load your using. Have you tried different powders?
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Post by x101airborne on Mar 10, 2024 7:33:58 GMT -5
I'll have to pin gauge the chambers. But, my NM Chambers will not accept ammo with bullets over .309" seated in brass. If the OM is similar, then opening throats is not an advantage. Aaah. Well that makes sense then. Thank you. |
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