What caliber would you bring back from the dead?

375er · Jul 14, 2026

.218 Bee to give the .22 Hornet some company.

Doug Hamilton · Jul 14, 2026

dlmac said:
I was looking at the 300 H&H vs the 300 Win Mag. It really comes in as something special when using 230-240 grain bullets...only available from Woodleigh...the 300 H&H.

I pretty.much only load 200 grain bullets in my .300 Win. No manual suggests that the .300 H&H matches the Winchester with 180 or 200 gr. In order to load 240s into a .300 H&H the velocity would have to be very low in order to keep pressure manageable. Don't really see the point.

Bush Buck · Jul 15, 2026

I'd like to see 338-06 become readily available - ammo, components and rifles. Seems like a great cartridge - deer to eland. I had one for a while but sold it because I didn't like the rifle itself. I'd like to have another.

dlmac · Jul 15, 2026

Doug Hamilton said:
I pretty.much only load 200 grain bullets in my .300 Win. No manual suggests that the .300 H&H matches the Winchester with 180 or 200 gr. In order to load 240s into a .300 H&H the velocity would have to be very low in order to keep pressure manageable. Don't really see the point.

Just like most things on this forum....a lot of them have no point. But is still a classic round and the 300 Win Mag can not do the very heavy for caliber bullets....maybe that is the point? I do like them both and have several...again no point in have more than one caliber. Do not about the pressures, think that they would be manageable due to case design vs Win mag?

Doug Hamilton · Jul 15, 2026

dlmac said:
Just like most things on this forum....a lot of them have no point. But is still a classic round and the 300 Win Mag can not do the very heavy for caliber bullets....maybe that is the point? I do like them both and have several...again no point in have more than one caliber. Do not about the pressures, think that they would be manageable due to case design vs Win mag?

I've never seen any load data for 240 grain bullets in either cartridge. What about the case design could possibly make the H&H superior, except for the nostalgia angle? If you want to drive heavier bullets at a faster velocity, you have to have a greater volume of propellant. Simple physics.

Tanner · Jul 15, 2026

350 Rigby
318 WR
333 Jeffery

I have a 300 H&H and took it to Namibia this year, I’ll likely hunt with this rifle in Montana from now on. At some point I’d like to build a 350 and 318.

dlmac · Jul 15, 2026

Doug Hamilton said:
I've never seen any load data for 240 grain bullets in either cartridge. What about the case design could possibly make the H&H superior, except for the nostalgia angle? If you want to drive heavier bullets at a faster velocity, you have to have a greater volume of propellant. Simple physics.

Im going for Door #3, The cartridge length and the taper

DaddyFlip · Jul 15, 2026

Doug Hamilton said:
I pretty.much only load 200 grain bullets in my .300 Win. No manual suggests that the .300 H&H matches the Winchester with 180 or 200 gr. In order to load 240s into a .300 H&H the velocity would have to be very low in order to keep pressure manageable. Don't really see the point.

Not entirely accurate. The H&H is always listed with a 26-inch barrel; the Win is anywhere from 24 to 26-inch depending on the manual. The H&H and Win are equals in those weights across the board in my Hornady, Lee and Lyman manuals, even accounting for the extra inch of barrel length for the H&H. Sometimes the H&H easily exceeds the Win depending on the powder. When the Win is faster, it's not much. There's no difference in the performance of these two rounds given equal powders. The H&H still wins on nostalgia and sex appeal.

Schüler Jumbo · Jul 15, 2026

.300 H&H Magnum:
The case volume of the .300 H&H Magnum cartridge is approximately 85.9 grains of water (H₂O). This measurement is important for understanding the cartridge's capacity and potential for velocity.

.300 Winchester Magnum:
The SAAMI specification .300 Winchester Magnum case capacity is 91.5 grains of H 2 O (5.93 ml).

Bob Nelson 35Whelen · Jul 15, 2026

Tanner said:
350 Rigby
318 WR
333 Jeffery

I have a 300 H&H and took it to Namibia this year, I’ll likely hunt with this rifle in Montana from now on. At some point I’d like to build a 350 and 318.

@Tanner
If you can't get a 350 Rigby the 35 Whelen will do every it will and more.
The rugby loaded a 225gn at 2,600fos and a 300 at 2,200fps the Whelen with the same projectiles will do 2,900 and 2,400 respectively.
Bob

Russ16 · Jul 15, 2026

Schüler Jumbo said:
.300 H&H Magnum:
The case volume of the .300 H&H Magnum cartridge is approximately 85.9 grains of water (H₂O). This measurement is important for understanding the cartridge's capacity and potential for velocity.

.300 Winchester Magnum:
The SAAMI specification .300 Winchester Magnum case capacity is 91.5 grains of H 2 O (5.93 ml).

I can solve this.

.300 Weatherby Magnum: ~101.8 to 106.3 grains of H₂O

TheRookie · Jul 15, 2026

I do miss the Lahti L-39

dlmac · Jul 15, 2026

Schüler Jumbo said:
.300 H&H Magnum:
The case volume of the .300 H&H Magnum cartridge is approximately 85.9 grains of water (H₂O). This measurement is important for understanding the cartridge's capacity and potential for velocity.

.300 Winchester Magnum:
The SAAMI specification .300 Winchester Magnum case capacity is 91.5 grains of H 2 O (5.93 ml).

OOPs May bad. guess Door 3 was a bad choice?

318AE · Jul 15, 2026

Tanner said:
350 Rigby
318 WR
333 Jeffery

I have a 300 H&H and took it to Namibia this year, I’ll likely hunt with this rifle in Montana from now on. At some point I’d like to build a 350 and 318.

My three favorite cartridges. Some people see this as a “dead man’s land” between the various 30 calibers and the 375. I see it as a sweet spot. Altogether, I have seven rifles in these three calibers.

PerH · Jul 16, 2026

Doug Hamilton said:
I've never seen any load data for 240 grain bullets in either cartridge. What about the case design could possibly make the H&H superior, except for the nostalgia angle? If you want to drive heavier bullets at a faster velocity, you have to have a greater volume of propellant. Simple physics.

The Woodleigh manual have data for .300 win mag , think .300 HH also is there .

Wes350 · Jul 16, 2026

Bob Nelson 35Whelen said:
@Tanner
If you can't get a 350 Rigby the 35 Whelen will do every it will and more.
The rugby loaded a 225gn at 2,600fos and a 300 at 2,200fps the Whelen with the same projectiles will do 2,900 and 2,400 respectively.
Bob

Only because the Rigby was originally loaded at much lower pressures than current Whelen loadings.

It’s like saying that the .416 Rem leaves the .416 Rigby in the dust because the original Rigby loadings only did 2,350fps out of 28” barrels.

The .350 Rigby is a full sized case in the 300 Winchester/H&H magnum class.

It is one of the most dead-sexy rounds ever designed.

If Loaded to ‘modern’ pressures, the 06’ based Whelen would handily be left behind.

Bob Nelson 35Whelen · Jul 16, 2026

Wes350 said:
Only because the Rigby was originally loaded at much lower pressures than current Whelen loadings.

It’s like saying that the .416 Rem leaves the .416 Rigby in the dust because the original Rigby loadings only did 2,350fps out of 28” barrels.

The .350 Rigby is a full sized case in the 300 Winchester/H&H magnum class.

It is one of the most dead-sexy rounds ever designed.

If Loaded to ‘modern’ pressures, the 06’ based Whelen would handily be left behind.

@Wes350
The Whelen loaded to the same pressure as the 338 win mag instead of the low powered factory Whelen rounds give the 338 a horrible shake up.
No flies in a Whelen with a 225 @2,900+fps or a 310 @2,455fps.
Bob

Schüler Jumbo · Jul 16, 2026

dlmac said:
Just like most things on this forum....a lot of them have no point. But is still a classic round and the 300 Win Mag can not do the very heavy for caliber bullets....maybe that is the point? I do like them both and have several...again no point in have more than one caliber. Do not about the pressures, think that they would be manageable due to case design vs Win mag?

Woodleigh Bullets Loading Manual:

.300 Winchester Magnum:
240 grain PPSN 2680 fps

.300 H&H Magnum:
240 grain PPSN 2510 fps

Tanner · Jul 16, 2026

Bob Nelson 35Whelen said:
@Tanner
If you can't get a 350 Rigby the 35 Whelen will do every it will and more.
The rugby loaded a 225gn at 2,600fos and a 300 at 2,200fps the Whelen with the same projectiles will do 2,900 and 2,400 respectively.
Bob

I have a Hawkeye African in 35 Whelen currently getting a pachmayr installed. Love that round but all of the Rigby cartridges are appealing and look incredible.

DaddyFlip · Jul 16, 2026

220gr JRN Lyman 51st. A few more grains in the WIN can sometimes overcome H&H's 2-inch advantage; sometimes it can't. Same applies for the lighter weight projectiles. Different manuals provide different results. These two 300's are so close in performance it doesn't matter; it comes down to personal preference.

What caliber would you bring back from the dead?

375er

Doug Hamilton

Bush Buck

dlmac

Doug Hamilton

Tanner

dlmac

DaddyFlip

Schüler Jumbo

Bob Nelson 35Whelen

Russ16

TheRookie

dlmac

318AE

PerH

Wes350

Bob Nelson 35Whelen

Schüler Jumbo

Tanner

DaddyFlip

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