180 Grain Bullet 3400 FPS or better

[Capt RB]

What case is that off of.?

Thx

300 norma

 

[6.5x300 WBY]

300 norma

Thank you sir

 

[Capt RB]

Kirby's 7 allen mag is a 338 lapua improved case necked to 7mm. His ran the 180's to 3400 and the 200uld wildcats to 3300fps. I'd agree with what swamplord posted the 195/197 class at 3300 would be better ballistics and much more energy. I've seen what the 183smk's do and I would be fine with the 197s on game as well. The front end crushes in then opens violently. Not a large ample size wiht the 183's but at 7 mag velocities they killed very fast. with only 1 of the 7 deer making a step and that heart shot went down in less than 20 feet.

 

[6.5x300 WBY]

Kirby's 7 allen mag is a 338 lapua improved case necked to 7mm. His ran the 180's to 3400 and the 200uld wildcats to 3300fps. I'd agree with what swamplord posted the 195/197 class at 3300 would be better ballistics and much more energy. I've seen what the 183smk's do and I would be fine with the 197s on game as well. The front end crushes in then opens violently. Not a large ample size wiht the 183's but at 7 mag velocities they killed very fast. with only 1 of the 7 deer making a step and that heart shot went down in less than 20 feet.

Sounds incredible. What a hammer.

 

[weatherbee]

So I've been running some numbers in Quickload with the following parameters:
65000 psi max
.33 Weighting Factor (recommended for overbore cartridges, not sure how it translates to reality)
180 Berger Hybrids with bearing surface Seated .200 into the neck (assuming optimum free bore for various cartridges)

This might turn into a book but here are the takeaways:
28" barrel minimum regardless of Cartridge, 26" just won't do it.
110 Grain water capacity minimum
Ramshot LRT, VV N570, R33, or R50 are the only powders that will do it.
Adding 2" of barrel adds 80fps on up to a 40", adding 10 grains of water capacity in the same barrel length only nets 30ish.

The cartridges I looked at:
7-300 Norma Mag 104 Water-3330
7-300 Norma Improved 110 Water 3390
7 Rum 112 Water-3400
7.21 Lazeronni Firebird 121 Water- 3430
7-378 Weatherby 124 Water - 3435
7-33XC 134 water - 3460

I still choose the 7-300 Norma improved as it's the only one on the list that makes the mark and will Mag feed without a special box. I would also still choose the 190s (3320) as they have less drop and drift and a lot more velocity and energy at 1k than 180s at 3400.

Good stuff right there

 

[weatherbee]

Kirby's 7 allen mag is a 338 lapua improved case necked to 7mm. His ran the 180's to 3400 and the 200uld wildcats to 3300fps. I'd agree with what swamplord posted the 195/197 class at 3300 would be better ballistics and much more energy. I've seen what the 183smk's do and I would be fine with the 197s on game as well. The front end crushes in then opens violently. Not a large ample size wiht the 183's but at 7 mag velocities they killed very fast. with only 1 of the 7 deer making a step and that heart shot went down in less than 20 feet.

What twist with the 197? 8?

 

[Capt RB]

What twist with the 197? 8?

I shot them through a 7tw 280 and an 8tw stw. This was just ladder testing for ocw and seating for both rifles. They were both built in the shop I use to work at. Unfortunately it has gone under.

 

[WYO300RUM]

3360fps with 30-378 accumark... and 26 inch barrel Retumbo and 180 Accubonds... This is the same load thompsons long range has their scopes set up for...I am guessing Reloader 26 , Reloader 33 or maybe N570 could get a 180 to 3400fps

I was getting 3360 fps from a factory 26 in. barrel 300 Rum with a few 180 gr. Bullets. 100.0 grs. Retumbo. Was very accurate . I eventually dropped it to 98.0 grs.. I put on a 28 in. Bartlein barrel. Have only test 2 bullets so far. Berger 215 w/N570 at 3130 fps and not near max. Hammer Hunter's. H1000, 3335 fps. Getting warm. Have some 178 Absolute's to try.

 

[jessej]

Who's producing the brass for the 7LRH.

My eye brows just perked up.

 

[Swamplord]

Who's producing the brass for the 7LRH.

My eye brows just perked up.

RCC in Texas makes the brass and it's available directly from them

Account Suspended

Whidden made dies for us and are a custom order initiated by the individual needing them, load data is available from me when you build one

 

[6.5x300 WBY]

Who's producing the brass for the 7LRH.

My eye brows just perked up.

You and me both. Seems it makes the 28 nosler its little brother. Wonder how you get someone to chamber such a round. I have never even heard of this. But thats not surprising as you guys make me feel like a child with all this stuff.

 

[westcoasthunter]

What's about a 30 Sherman mag with 181 HH I have not tried it yet. But my 300 prc with 181 hh with rl26 gets about 3300 so I figured the 30 Sherman will get around 3400+ I will be trying them out soon

 

[mrultramag]

Is there a caliber out there that isn't a fire form wildcat (one step neck down "wildcat" is fine) that can send a 180 Grain bullet at 3400 FPS or better and shoot/group well? This would strictly be a hunting rifle. Action length doesn't matter. Bolt face doesn't matter. Barrel Burner doesn't matter.

I dont believe 7STW, 7- 300 WBY, 28 Nosler will get you there


Looking more towards 7mm because of better BC. Any input would be appreciated. 28" max Barrel length, preferably a 26" Barrel

Thanks

300 rum

I'm quite certain a 300 RUM can get you there if you throat it properly. Nosler load data shows 3359 fps (from a 24" barrel) with 180 gr and 3.6" COAL. Extend that it to 3.8+" and your likely getting 3400.

Easily with a 28" I been there witha 26" but was plenty warm at 3420. 3350 is comfy in a 26"

 

[mrultramag]

300 RUM. Factory Remington 26"
180 grain accubonds. 100 grains of RL25. 3500fps.

30-338 lapua UNimproved. 24" hart barrel. 12 twist. 165 grain accubonds. 98 grains of RL 22. 3700fps.

338 RUM. Factory Remington 26".
180 grain accubonds. 101.5 grains of RL22
3650 FPS.

338 RUM 26" Krieger I ran 210 sciroccos up to 3600 FPS with RL22.
Yes these are hot. They were/are safe in my rifles. None of these loads produced heavy bolt lift. However, Remington brand brass, primer pockets loose after 1 shot. ADG brass is good for 3 plus shots. (on 3rd loading now with no issues)
Lapua brass in the 30-338 is good for 6 plus shots.