one for the wild catters 375/300wsm

WhelanLad

WhelanLad

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Gday, its been done id say.. but whats the thoughts on a 375/300wsm but instead of trying to slip a pill flat out, really slowing it down to around 2200fps or there abouts?

Was thinkin last night how effective my 35Whelen is, an it got me thinkin of a short fat SLOW cartridge idea, blow the 300WSM out to .375 an use .375win projies an have a Strictly stalking rifle where a long shot would be 200m or not much further?

call me crazy, last night was all i thought about it, it proberly needs more thinking than that LOL!

the 375 Wheely Slow Magnum?
 
300 wsm cant really get any more blown out for starters. im not sure why you would want to run big soft bullets slow like that, but im sure you could load down a 220rn nose and have alot less trouble and headache.
 
well, there's already the 325 and 338 redneck, but sure.

Whats the advantage over other conventional rounds? Just stopping power for large game in a short action?
 
I built a 375, on a 350 RM case in a short Ruger action with an 18" barrel. It performed all out of proportion to it's size actually I was quite impressed with it. For your purposes why not a 375-06 or 375-08?
 
WhelanLad said:
Gday, its been done id say.. but whats the thoughts on a 375/300wsm but instead of trying to slip a pill flat out, really slowing it down to around 2200fps or there abouts?

Was thinkin last night how effective my 35Whelen is, an it got me thinkin of a short fat SLOW cartridge idea, blow the 300WSM out to .375 an use .375win projies an have a Strictly stalking rifle where a long shot would be 200m or not much further?

call me crazy, last night was all i thought about it, it proberly needs more thinking than that LOL!

the 375 Wheely Slow Magnum?
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Not to dump on your idea, but if you want a 220gr, .375" projectile at 2200fps the 375 Winchester will already do that and it comes in nice, handy lever action rifles that are perfect for your intended use as a short range stalking/dogging rifle.


Mark
 
c-fbmi said:
I built a 375, on a 350 RM case in a short Ruger action with an 18" barrel. It performed all out of proportion to it's size actually I was quite impressed with it. For your purposes why not a 375-06 or 375-08?
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And for lever action fans, there's the .375-284.

The .375-300 WSM is doable though. I have a fired .300 WSM case that measures 2.098" long. If a 270 gr Hornady was seated to the cannelure, it would intrude only slightly into the powder capacity of the cartridge, perhaps leaving 72% of the cartridge for powder capacity. At 100% density with a ball powder like 760, that leaves room for about 67 grs. The cartridge then would be comparable to the .375 Dakota which with similar capacity drives a 270 gr bullet just over 2800 fps or about 400 fps faster than the .375 Whelen.

I just ran some numbers on Quick Load. With a 270 gr Hornady, 67 grs of 760 doesn't produce much more than 2500 fps, but is over 103% loading density. A better option is 65 grs of R-15 which makes 2750 assuming a 22" barrel.
 
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There is a cartridge that will do exactly what you are looking for but more efficient.

I shoot a 21" barreled T/C Contender carbine in 375JDJ = 260gr Accubonds @ 2280fps awesome thumper with this bullet with its .473 BC it is still doing 1800fps @ 300 yards.

I've been dreaming about a beltless 375 mid velocity round haven't found it yet but closest I have come is a 376 Steyr.

Here is a pic I took Oct 2010 of a 300WSM case with a .375" bullet inserted it is sitting between a 375RUM and a 375H&H.

img_9448.jpg
 
Funnily enough i own a Win 94 .375win but its top eject an has williams peep sight. although im not very useful with it, an sambar hunting can be anywhere from 15-200 m , obviously you can stalk in on some instances but cross gulley is always a high chance of the only shot you will get on a big stag.

I also use a 35Whelen most of the time just lately the new Wizzum abolt has been carried more.

It was more a thought i spoke out about the 375, lotta you guys know alot more than me.

I dont want the 325 recoil i suspect the 35Sambar(35/300wsm) carries due to it trying to slip the pill quickly..?

it is proberly a fair amount of Powder to burn in trying to keep it slow?
The 308case is proberly the tree i should be barking up..


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What about the .375 Ruger with handloads? I'm sure you could do anything you want with it.
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Slooshark1 is certainly right and I would say the same of your 35 Whelen.

However wildcats are fun in their own way and the 300WSM case works excellently when necked up well past .323". It's been done with good success to .338, .358, and .375 - even larger. However recoil becomes more stout than the 325WSM as heavier charges kick heavier bullets on their travels.

For example Birddeerhunter on another forum in 2004 made a 375WSM and reported 235gr Barnes out at 2790MV for 4040 ft/lbs of muzzle energy - and 2450 for a 300 gr bullet.

My 350WSM (35Sambar) with top ReL17 loads similarly slings 225gr Partitons at 2900MV from a 22" barrel - 4206 ft.lbs. My hunting 250gr loads are 2740MV.

I find wildcat development and loading to be pure shooting entertainment. Never really needed one with all the factory choices - yet I have a few.

Good luck finding yer perfect Sambar shooter.
 
It most dfinitely is cooking that is until you compare it to my 21" barreled 375RUM = 260gr Accubonds @ 3020fps.

:D
 
I have toyed with the idea of necking the 300 WSM up to .44, even mocked one up. I was thinking of custom cast bullets in the neighbourhood of 400 grains around 2200 fps, and jacketed .44 mag bullets really jacked! I also designed a 350 grain .375 truncated cone bullet that comes to about 2200 fps with a full load in the .375 H&H. Both are probably more recoil than you were thinking of.
 
I like the idea of wildcats but 300gr bullet at 2200fps to me equals 405 winchester. Or a hot loaded 4570. Sorry I can't help but I like your way of thinking
 
Campcook, that .375 RUM is impressive but the recoil must be barely tolerable. I'm shooting my .358 Norma Mag out of a Ruger Number 1 and it's about all I can handle.
 
Whelen B said:
Slooshark1 is certainly right and I would say the same of your 35 Whelen.

However wildcats are fun in their own way and the 300WSM case works excellently when necked up well past .323". It's been done with good success to .338, .358, and .375 - even larger. However recoil becomes more stout than the 325WSM as heavier charges kick heavier bullets on their travels.

For example Birddeerhunter on another forum in 2004 made a 375WSM and reported 235gr Barnes out at 2790MV for 4040 ft/lbs of muzzle energy - and 2450 for a 300 gr bullet.

My 350WSM (35Sambar) with top ReL17 loads similarly slings 225gr Partitons at 2900MV from a 22" barrel - 4206 ft.lbs. My hunting 250gr loads are 2740MV.

I find wildcat development and loading to be pure shooting entertainment. Never really needed one with all the factory choices - yet I have a few.

Good luck finding yer perfect Sambar shooter.
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WhelenB, with these cartridges, is it a fast or slow burning powder setting it off? an cant it be varied for lighter pills, cooked slower to reduce recoil but be effective in normal hunting ranges -300
 
Slooshark1 said:
Campcook, that .375 RUM is impressive but the recoil must be barely tolerable. I'm shooting my .358 Norma Mag out of a Ruger Number 1 and it's about all I can handle.
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It is definitely not for a new shooter = I install Kick-Eez magnum model recoil pads they are the reason I am able to handle the recoil of this and several other heavy recoiling rifle/cartridge combo's that I shoot.
 
Holy crow, 2900 fps out of a 22" barrel is cooking!
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Bryce Towsley makes 2950MV with the same load from a 24" tube 350WSM but using 225 Trophy Bonded Bear Claws - stepping out IMO - ReL17 working its magic.
WhelenB, with these cartridges, is it a fast or slow burning powder setting it off? an cant it be varied for lighter pills, cooked slower to reduce recoil but be effective in normal hunting ranges -300
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Burn rate is all "relative" quickness and needs to be tailored to the catridge case capacity and bullet weight primarily. Large cases generally use large charges of slower rifle powders and looong barrels to give top velocities. CampCook's voluminous 375RUM falls in this category - although 21" is uncharacteristically short. Medium capacity cases like the 35Whelen (and even my 350WSM) generally use smaller charges of medium burn rate rifle powders with less recoil to make the magic.

It's easy to reduce loads yet care must be taken selecting a good powder for it. Starting loads may suffice. I'm not sure exactly what your end game is. Reducing loads to reduce recoil and expecting longer reach is not gonna happen. But a good 250 or 225 from a 35Whelen with top loads will make a good 300yd Sambar rifle I think - if accurate. I have extensive experience loading for it and feel pretty confident saying that - though never seen a Sambar myself. However if you want 300yd reach you MUST have enough snuff at distance to kill humanely. Therefore recoil is your friend - sort of - though must be managed/mastered. Top loads will be needed IMO.
 
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