What should I build in 270 cal ?
- Thread starter Trm82
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Ranger Rick
Well-Known Member
With HP your #1 priority and your 27 Nosler love, go for it. If you have second thoughts, consider a 6.8 Western or adding a 7saum to the mix.
Hondo64d
Well-Known Member
Since the donor is a 7 Rem Mag, I'd do a .270 Wby. You can even use your 7 Rem Mag brass if you want…
John
rbTanzan
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I think that you are on the right track with a fast-twist barrel. I would recommend 1 in 8" or possibly even 1.7" if you wanted to shoot something like a Hammer Hunter in 168gn.
Once you have the twist and barrel the rest is according to your wishes.
[If you had wanted a standard round, then the old 270Win or 270AI would be great and would not raise recoil. But you might as well use the magnum bolt face.]
Frankly, .277" bullets don't recoil very much (said by someone who hunts deer with a 338 and plains game with a 416 or 500). So some of the extra capacity rounds are worth considering.
The 270WSM and 6.8Western are almost the same round with different factory twists. The WSM comes with 10" twist, the 6.8 comes with factory twists of 8" or 7.5". If you are putting on your own barrel, then these are virtually the same round. (Technically, the 6.8 is 0.08" shorter in the body, the shoulder and neck are absolutely identical, as is the case head.) I would go with either round if desiring a short-action load, although the 6.8 is more adaptable for longer bullets in a magazine. I would also discuss the throat with your gunsmith, since you could put in a sloping leade with a custom gunsmith. See SAAMI diagrams below. Note the sloping leade in the 270Win, and the 0.1" freebore in some and the 0.38" freeborn in the Weatherby, excessive in my opinion.
If you want a longer action, then the 270 Nosler would make sense, with 15 grains powder capacity over the 270 Weatherby. It's your call.
In terms of powder capacity, listing short action to long, your choices are:
75 grains (6.8W), 79gn (WSM); 67 (270W), 70 (270AI), 81 (270Wby), 95 (27Nos).
But again, study the throats and discuss with your smith:
270Win
6.8Western
270WSM
270Wby
27Nosler
Personally, I would replace the Nosler throat with a traditional 270Win throat. The 0.1" freebore are fine as is. With long mono bullets you might want a 0.1" freebore put into a long sloping 270Win throat, if given an option.
Once you have the twist and barrel the rest is according to your wishes.
[If you had wanted a standard round, then the old 270Win or 270AI would be great and would not raise recoil. But you might as well use the magnum bolt face.]
Frankly, .277" bullets don't recoil very much (said by someone who hunts deer with a 338 and plains game with a 416 or 500). So some of the extra capacity rounds are worth considering.
The 270WSM and 6.8Western are almost the same round with different factory twists. The WSM comes with 10" twist, the 6.8 comes with factory twists of 8" or 7.5". If you are putting on your own barrel, then these are virtually the same round. (Technically, the 6.8 is 0.08" shorter in the body, the shoulder and neck are absolutely identical, as is the case head.) I would go with either round if desiring a short-action load, although the 6.8 is more adaptable for longer bullets in a magazine. I would also discuss the throat with your gunsmith, since you could put in a sloping leade with a custom gunsmith. See SAAMI diagrams below. Note the sloping leade in the 270Win, and the 0.1" freebore in some and the 0.38" freeborn in the Weatherby, excessive in my opinion.
If you want a longer action, then the 270 Nosler would make sense, with 15 grains powder capacity over the 270 Weatherby. It's your call.
In terms of powder capacity, listing short action to long, your choices are:
75 grains (6.8W), 79gn (WSM); 67 (270W), 70 (270AI), 81 (270Wby), 95 (27Nos).
But again, study the throats and discuss with your smith:
270Win
6.8Western
270WSM
270Wby
27Nosler
Personally, I would replace the Nosler throat with a traditional 270Win throat. The 0.1" freebore are fine as is. With long mono bullets you might want a 0.1" freebore put into a long sloping 270Win throat, if given an option.
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That Sir, is one of the most beautiful rifles that I have seen on this forum. I'm sure you are very proud of it, congratulations.
wkdwdg66
Well-Known Member
270 WBY with Weatherby throat/freebore
James DeTorre
Well-Known Member
Fast twist 270ai seems cool. Anyone have a source for dies?
Anyone try a .277 / 7 SAUM? Likely so close to the 6.8 Western not worth the hassle? I'm building a 27 Nosler off a Terminus Kratos Lite and Bartlein Carbon in the new 400 MOD harder stainless steel bedded in a Gunwerks Clymr stock. Hopefully keep barrel life up. It's a dedicated hunting rig so not a high volume shooter by any means. Thinking it'll pop off the 156 Hammer at a pretty high rate.
jfolanddvm
Well-Known Member
If you already have all of the components for Nosler, WSM and Bee, I would lean towards the WSM. Don't have a 270 weatherby, but have WSM in 4 calibers and 3 of the noslers. Its not that I don't like the noslers or appreciate the extra horsepower, but in these times of limited materials, 1 lb of powder can produce 80+ nosler cartridges or over a hundred WSMs and there is very little I could do with the nosler that couldn't be accomplished with the 270 wsm. Just my $.02.
Trm82
Well-Known Member
This will be used mostly for hunting Anything that has more than one stomach in Alberta Canada and playing on long range steel .
