troutseeker
CGN Ultra frequent flyer
- Location
- Prince George, BC
That .375 Chai Tea sounds intriguing. But we are talking hunting rifle here, not Komando Tacticool Sniper stuff...
.375 Ruger....
- Thread starter J.G.
- Start date
- Status
This you must explain. There is no reason the 375 H&H or the 375 Ruger cannot be loaded with any bullet the CT can.
Ted
Last edited:
The CT projectile is 350 gr and is longer than a .223 loaded bullet. With the profile, it looks like it would need to be loaded 1.25 inches past the case to seat it properly in the case mouth. That doesn't include seating it to the lands... It is a huge projectile...
I used a friend's CT.
The one I would look at buying was a bullpup design...
It's a very long taper on that projectile, and it's also a monometal. It's not about the bullet weight so much as it is about the length... It won't fit in the clip of the other 375 type of rifles...
Right, it is the length of the bullet, not the weight that determines the twist need to stabilize it.
Okay, so you are saying the ogive is too long to seat the bullets to fit the magazine. The factory magazine in my BRNO ZKK602 holds five rounds, and allows bullets to be seated out to 3.85" overall length with room to spare.
What is the OAL of the 375 CT in a repeating rifle?
Ted
High kinetic energy at extreme distances
Superior Accuracy at extreme long ranges
Copper Nickel Alloy projectile
Ballistic Coefficient: .988
Weight: 350 Grain
Length: 4.303
Velocity: 3,200 fps (approx.)
Muzzle Energy: 6,723 ft. lbs. (at 200M)
MSRP: $142 (20/BX)
U.S Pricing only
This is the OAL of the loaded cartrigde. It's massive... The brass is around 3" long.
It is possible that the Brno would hold that bullet in the magazine, but is it a fast enough twist??
Last edited:
Here's the link.
http://www.canadiangunnutz.com/foru...WARNING-Grisly-picture!?p=9991494#post9991494
Ted
http://www.canadiangunnutz.com/foru...WARNING-Grisly-picture!?p=9991494#post9991494
Ted
burnt_servo
CGN Ultra frequent flyer
- Location
- right in the middle of b.c.
lmfao ........... that has to hurt
OK gentlemen, back to the business at hand..........I have loaded my first racks of test loads for the Imposter. I used the 4 most useful bullet weights for the 375, 260 gn AB, 270 gn A-frame, 285 gn Speer GS and 300 gn Nos Part. Before we have a huge discussion about best bullet weights and designs, let me say these are the weights I would use in the H&H and they are the weights that I have on hand right now and are the only weights I can get my hands on right now.
I have loaded all with Win 760 for this round, it is recommended in all weights and is one of the top performers in all these weights. I have loaded 15 rounds of each weight, with 3 rounds each of ascending powder charge for 5 charges. I have loaded all loads to a COAL of 3.42" which is the absolute max magazine length allowable. I am hoping to get to the range on Fri, weather and other obligations permitting.
I will publish results and powder charges after they have been tested and chronographed.
Next round will be using the same bullet weights and different powders, with the same layout, 3 rounds each of 5 ascending powder charges for 15 of each weight. I will likely be testing H or IMR 4350 next, another excellent performer in all 4 weights.
These loads are all in W-W brass for now until I get a feel of where maximum is for the bullets and powders in this cartridge, then I will be able to test brass against brass. I prepped the 300 WM brass by first fireforming 60 cases in the rifle with a good load of 3031 and a cast bullet. They formed very nicely, I then sized, without bumping the shoulder, and tumbled them until nice and clean. I trimmed them all to the same avg length as the factory Horn brass Steve sent me @ 2.575", chamfered necks inside and out, cleaned and leveled all primer pocket floors and uniformed and checked all flash holes. I don't do these last 2 steps for my H&Hs but I want to be thorough. Wouldn't want someone to say the results were skewed due to poor brass prep or sloppy loading practices. All loads were weighed on an RCBS Chargemaster and all COAL were measured and adjusted within 2-3 thou with none going over the max of 3.420".
Hopefully the weather co-operates for Fri and I have some targets and chronograph tapes to photo and share.
I have loaded all with Win 760 for this round, it is recommended in all weights and is one of the top performers in all these weights. I have loaded 15 rounds of each weight, with 3 rounds each of ascending powder charge for 5 charges. I have loaded all loads to a COAL of 3.42" which is the absolute max magazine length allowable. I am hoping to get to the range on Fri, weather and other obligations permitting.
I will publish results and powder charges after they have been tested and chronographed.
Next round will be using the same bullet weights and different powders, with the same layout, 3 rounds each of 5 ascending powder charges for 15 of each weight. I will likely be testing H or IMR 4350 next, another excellent performer in all 4 weights.
These loads are all in W-W brass for now until I get a feel of where maximum is for the bullets and powders in this cartridge, then I will be able to test brass against brass. I prepped the 300 WM brass by first fireforming 60 cases in the rifle with a good load of 3031 and a cast bullet. They formed very nicely, I then sized, without bumping the shoulder, and tumbled them until nice and clean. I trimmed them all to the same avg length as the factory Horn brass Steve sent me @ 2.575", chamfered necks inside and out, cleaned and leveled all primer pocket floors and uniformed and checked all flash holes. I don't do these last 2 steps for my H&Hs but I want to be thorough. Wouldn't want someone to say the results were skewed due to poor brass prep or sloppy loading practices. All loads were weighed on an RCBS Chargemaster and all COAL were measured and adjusted within 2-3 thou with none going over the max of 3.420".
Hopefully the weather co-operates for Fri and I have some targets and chronograph tapes to photo and share.
Brilliant! You are smarter than you look!
Ted
Well... I don't know about that... I just looked in the mirror, I see an average looking oldish bloke... I'm not really up on current fashion these days, so I could spruce myself up I suppose... for example, I only have two eyebrows and I understand that "three" are all the rage...
Republic of Alberta
CGN Ultra frequent flyer
- Location
- ,location, location
Let's see...
Your win brass has 3% more capacity than the Ruger so if velocity rises at 1/4 the rate of case capacity you will get a little less than 1% more velocity out of the win brass.
If you take the brass up to the point where it starts to flow into the bolt face you are looking at probably around 73,000psi to 75,000 psi. If velocity rises at 1/2 the rate of pressure this equals a rise in velocity of 8.9% to 10.5%
The wild cards here are the strength of the brass, how square the bolt face is (a crooked bolt face will show pressure on the brass sooner) and the length of the throat.
Your win brass has 3% more capacity than the Ruger so if velocity rises at 1/4 the rate of case capacity you will get a little less than 1% more velocity out of the win brass.
If you take the brass up to the point where it starts to flow into the bolt face you are looking at probably around 73,000psi to 75,000 psi. If velocity rises at 1/2 the rate of pressure this equals a rise in velocity of 8.9% to 10.5%
The wild cards here are the strength of the brass, how square the bolt face is (a crooked bolt face will show pressure on the brass sooner) and the length of the throat.
This you must explain. There is no reason the 375 H&H or the 375 Ruger cannot be loaded with any bullet the CT can.
Ted
There is that little matter of the Chey-Tac taking the heavy bullets something on the order of 1000 fps faster. Well maybe not quite, but rounding up seems to be in order.
Here's my little trifecta of .375 cartridges. From left to right; factory Federal 300 grain .375 H&H, .375 Weatherby formed from .300 Weatherby (that's why its a bit short) and the .375 Chey-Tac necked down from .408 with a 350 grain SMK.
There's no particular reason why a sporter couldn't be made around the Chey-Tac. The parent case is the .505 Gibbs, beefed up a bit. The CZ action comes in .505, so a bullet swap to get the length down would take care of that. Recoil would be somewhere around 70 foot-pounds in a 12 pound rifle. Certainly do-able.
Last edited:
Last edited:
Hi Dogleg,
The question concerning the CheyTac was not velocity. It far exceeds any other 375 factory loading. RockChucker, here in Whitehorse has barrelled up and chambered a number of them, and we are familiar with the cartridge.
The statement was that the 350 gr spitzer's high BC could not be taken advantage of in shorter rounds.
Your 375 Wby is the most practical of the bunch. Nothing wrong with 270 spitzers at over 3000 fps. At least that's what mine does. BTW, forming cases out of 416 Remington Mag give perfect brass of the correct length. One pass through the 375 Wby sizing die, load, and go hunting.
Best,
Ted
The question concerning the CheyTac was not velocity. It far exceeds any other 375 factory loading. RockChucker, here in Whitehorse has barrelled up and chambered a number of them, and we are familiar with the cartridge.
The statement was that the 350 gr spitzer's high BC could not be taken advantage of in shorter rounds.
Your 375 Wby is the most practical of the bunch. Nothing wrong with 270 spitzers at over 3000 fps. At least that's what mine does. BTW, forming cases out of 416 Remington Mag give perfect brass of the correct length. One pass through the 375 Wby sizing die, load, and go hunting.
Best,
Ted
Last edited:
Johnn Peterson
CGN Ultra frequent flyer
- Location
- Chemainus B.C.
There is that little matter of the Chey-Tac taking the heavy bullets something on the order of 1000 fps faster. Well maybe not quite, but rounding up seems to be in order.
Here's my little trifecta of .375 cartridges. From left to right; factory Federal 300 grain .375 H&H, .375 Weatherby formed from .300 Weatherby (that's why its a bit short) and the .375 Chey-Tac necked down from .408 with a 350 grain SMK.
There's no particular reason why a sporter couldn't be made around the Chey-Tac. The parent case is the .505 Gibbs, beefed up a bit. The CZ action comes in .505, so a bullet swap to get the length down would take care of that. Recoil would be somewhere around 70 foot-pounds in a 12 pound rifle. Certainly do-able.
Yikes!! That .375 Chey-Tac looks like it should be sitting on a launch pad at Cape Canaveral.- Status
