Next week, I'm picking up a 1956 pre-6 model 70 that started life as a 300 H&H. The original owner, whom I getting the rifle from, had it re-chambered to 300 Weatherby. As I already have a pre-64 in 300 H&H, I'm considering taking it to a 375 H&H if I can find an original barrel. What else needs changing beside the barrel?

You should be good to go.

Turn it into a 400 H&H

what's a 400 H&H?

Necked up 375 H&H to .411, pushes a 400gr bullet approx 2400 fps. Used it on a cow elk last fall with a 300gr TSX moving at 2600 fps

quote:

Necked up 375 H&H to .411

I bet it feeds slick. The wildcatter in me wouldn't have left it alone. I would have ended up with less taper and moved the shoulder forward. All for a very marginal velocity gain that wouldn't make a difference in the real world.

I like 375 H&H, 375 Wby or the 400 H&H idea!

Remember...the 400 H&H uses an oddball bore..not many choices of bullets...although this may change with time. The idea is great!

I really want to stay with one of the original calibers for this fine rifle. Anyone know of an available original 375 H&H barrel?

The 400H&H with a 400gr Hawk Bullet and a 375H&H with a 300gr TSX

Reminds me of the 404J and yes it does feed very well I've been working up loads using 400gr CEB's the base of the bullet barely enters the body of the case.

Duane is correct there are fewer bullets available in .411 than say .416. I do believe there are plenty around to do the job you need. Heck I even run .416 bullets through a sizer and they work fine.

Barnes will be supplying .411 dia bullets before the year is out.

quote:

Originally posted by wapiti22:
I really want to stay with one of the original calibers for this fine rifle. Anyone know of an available original 375 H&H barrel?

Don't grow old waiting for one. I've been looking for about 20 years for a reasonably price one to put on an otherwise original rifle I own with a shortened barrel & improved chamber. I've been a day late or several hundred dollars short on every one. In the meantime, I just enjoy the rifle as it is.

BTW If you're planning to use the original Winchester stock, a factory 375 barrel won't fit without a gap where the dog knot for the rear sight is. Factory 375 stocks aren't as hard to come by as the barrels, but they're not exactly plentiful.

wapiti22,
You may want to take a hard look at the action before committing to a 375 H&H. In order to make a 300 Weatherby feed from an original 300 H&H, the rails of the action were often opened up to accommodate the increased shoulder diameter of the Weatherby case. Now this may or may not have been done to your rifle. If it has been altered, then making a 375 H&H feed correctly could be a problem. I’d suggest you have it checked before you spend a bunch of time and money in any one direction. Unfortunately, a lot of fine old rifles have been altered in order to make them “better”. Just my two cents worth; I hope the project works out for you.
Sincerely
DPV

Thanks DPV. I did not know that. I'll have to look at that.

I believe cross bolts will have to be added as well, if you go the 375 route?

I believe it was Kreiger that makes the contour you are looking for, could be mistaken. I too have a p-64 and same year but it was chambered for the HH AI and thought in line of your notion to go to the larger bore.

I'm thinking I'll look for a 300 H&H original barrel to take it back to what it was. I found one a few months back and had it mounted to a magnum action and built it into a finished rifle. Sounds like too much effort to go up to 375 H&H and I really don't need a 375.

wapiti22,
Check your PM. Some info for you there.
DPV

Thanks, I found an oriinal 300 H&H barrel so will have it mounted and restore this rifle to what it was meant to be. Only prolem is now I will have to pre-64's in 300 H&H.

No way that would every be a problem for me!