375-338 vs the 375 H&H?

I was not intending to "question" your results, sorry if you took offence, it is hard to read tone online sometimes so I can't really tell if you are. I am just curious what causes these changes, I have no claim to any special experience reloading or shooting med bores...

I did not clarify the loads I listed are for the .338 wm.
 
conor_90 said:
I was not intending to "question" your results. I am just curious what causes these changes...
Click to expand...

:)Not a problem and I didn't take it as such. Just stating the info I've been given or have available. Again, when I get into some serious range time with the 375CT, I'll have a better idea and will post the findings:).
 
NP thanks for your responses Johnn; I am a big fan of the 2.5 inch cases and would like to play with this one myself someday funds permitting.
 
Johnn Peterson said:
Admittedly,:redface: I haven't 'played' with it all that much,;) yet. Part of the reason is locally, we've been experiencing access issues to our range facility with :rolleyes: recent changes in logging Co. gates policies. Complicating things further, I have a cataract problem that will be delt with shortly. Won't be soon enough for me but then I plan on getting into some serious load development and testing. I have a few fairly recent acquisitions that have that 'need'. For a rough 'guestimate' I have received the following basic load info that may give an idea as to what I can expect.
- 270gr, bullet,- IMR 4064, 2675 - 2822f/sec
-................. - IMR 4320, 2645 - 2690f/sec
- 300gr. bullet - IMR 4064, 2560 - 2620f/sec
I'm pretty sure, my primary 'go to' load will be with a 270gr Matrix and IMR 4064. When I get down to the load of choice, I'll plan to post chrony and accuracy details.
Click to expand...

Your expected velocities are more in line with the velocities from a .375 Weatherby Magnum with a 24" barrel according to Hodgdon. The Weatherby also has a 17 grain capacity advantage over the C-T. Don't blow yourself up (or your moose)! :)
 
chuck nelson said:
Does anyone know the water capacity comparison to the base of the neck between these two and does anyone have a reamer for the former? :)
Click to expand...

Save your M70 for a 7MM build of some sort, Chuck. We all know that's what it'll end up being eventually... :p ;)

There is a simple, relatively affordable, solution for your .375 itch...

P1020373_zpsc04e2afd.jpg
 
Just build a .416 Chatfield Taylor and be done with it ALL !
Click to expand...

I dunno a few days ago I was reloading and was looking at a loaded .338 case and a .500 diameter bullet and I got to thinking...
 
Johnn,
Typically, chambers are cut to .005" to.015" over maximum case length and I'll confess right now to not gauging a chamber cut with my Henriksen reamer. Something to keep in mind when trying to sneak up on maximum length as you are doing is the difference in case neck diameter and chamber neck diameter. The length of the chamber is given as the length at the outside of the chamber neck. Now, the front of the reamer is ground to a 45 degree angle. This means that at a smaller diameter, the chamber is longer. If I am gauging a chamber length, I make a gauge which is .001" smaller than the neck diameter. This will measure the length plus no more than about .0005" Your case necks are likely at least .010" smaller than the chamber neck diameter so you might measure about five or six thou longer than the actual chamber length. If I was in your shoes (and I'm not), I think I would simply trim to 2.5 and call it good.
 
conor_90 said:
I dunno a few days ago I was reloading and was looking at a loaded .338 case and a .500 diameter bullet and I got to thinking...
Click to expand...

:)Go wild. ;)Try that diameter in a handgun.



They are a 'handful' and ;)capable of inflicting pain, at both ends:p. But, also capable of good accuracy, with both cast and jacketed bullets and in hot or light loads.

 
Leeper said:
Johnn,
Typically, chambers are cut to .005" to.015" over maximum case length and I'll confess right now to not gauging a chamber cut with my Henriksen reamer. Something to keep in mind when trying to sneak up on maximum length as you are doing is the difference in case neck diameter and chamber neck diameter. The length of the chamber is given as the length at the outside of the chamber neck. Now, the front of the reamer is ground to a 45 degree angle. This means that at a smaller diameter, the chamber is longer. If I am gauging a chamber length, I make a gauge which is .001" smaller than the neck diameter. This will measure the length plus no more than about .0005" Your case necks are likely at least .010" smaller than the chamber neck diameter so you might measure about five or six thou longer than the actual chamber length. If I was in your shoes (and I'm not), I think I would simply trim to 2.5 and call it good.
Click to expand...

Thanks Bill and that's why I asked.:) I thought if anyone would know, you would. The cases I got with the rifle are formed from 338WM and are at that 2.500" length you specified. I'll go with that and thanks again.
 
No thanks Johnn my 500 S&W handi-rifle delivers enough recoil for my liking at the moment.

Would love if you contributed to the 500 S&W thread I made in the reloading forum though.
 
Johnn Peterson said:
:)Go wild. ;)Try that diameter in a handgun.



They are a 'handful' and ;)capable of inflicting pain, at both ends:p. But, also capable of good accuracy, with both cast and jacketed bullets and in hot or light loads.

Click to expand...

Did you ever get that Big Horn Model 89 you wanted to compliment that wheel gun Johnn?
 
LittleBoyLefty said:
Save your M70 for a 7MM build of some sort, Chuck. We all know that's what it'll end up being eventually... :p ;)

There is a simple, relatively affordable, solution for your .375 itch...

P1020373_zpsc04e2afd.jpg
Click to expand...


There is something wrong with this picture?
Just trying to wrap my head around it :)
Oh yeah, its a leftie...dam lefties they get things specially built for them, lol.
Nice gun, even if its a lefty
Rob
 
375-338CT is an excellent and easy wildcat. I use 458WM brass. 300gr and 270gr shoot excellent...could not get lighter bullets to shoot well. Mine built on CZ comm'l mauser action with Atkinson/Marquart barrel 22" and No.2 contour, Timney trigger, lightened firing pin and speed spring, Banded front ramp and Ruger rear sights. Put in Bell & Carlson stock. Never got around to getting nice wood from Boyd's. Wanted to match my 280AI build.
 


Sorry for the hi-jack, as previously mentioned this is my Bison medicine built entirely and blooded by Brother.
416 Taylor with a Douglas Premium octagon barrel on an '03 A3 action, the rifle shoots better than I can hold.
350 and 400 Woodleigh loads average 0.85 " usually with a case full of 4320 powder, Hornady 400s average 1.25" to 1.50 ".
All metalwork and stockwork done by Brother and as pictured it weighs in at 9 lbs., I would not want it an ounce lighter, believe me ...
 
Lovely rifle, Kevan.

Have seen it before, and as I have posted here several times before, your brother was one of the best kept gunsmithing secrets in Canada.

It was a privilege to know him, and have some work done by him.
Ted
 
You must log in or register to reply here.
Back
Top Bottom