375 SHERMAN YUKON

[elkaholic]

This is a little off the norm for most Sherman designs, but my cousin moved to Alaska and wanted something short and light that packed a wallop. He will be doing a lot of trapping, hunting etc, in bear country, and of course have moose to hunt. I decided to bypass the 338, and 35 bores and go right to the 375 and design it around a mono that you could run out of a Short Action if you chose. I built mine on a Rem 700 SA with a Hawkins DBM and his on a bone stock Tikka.
My 700 has #5 Benchmark 12 twist cut at 17 1/2" with a 3 port Alexander brake. Todd's has a #4 12 twist Benchmark cut at 18 1/2" with the same brake.
I've been testing them for a couple months with 248 HH and 270 SH bullets. The results are pretty impressive for a SA rifle that weighs 7.8 lbs with scope and is only 38 1/2" long. Todd's Tikka weighs 7.2 lbs. I can run the 248 past 2900 with the 248 and 2750+ with the 270. I finished load development for mine today with the 270 SH at 2715 and shot the best group to date at .183" for three shots.
Todd received his rifle a couple weeks sgo snd his son drew first blood with a Yukon on a young Alaskan Black bear. He shot it at 260 yards with a 248 at 2870. The bear was facing him and he shot it almost center chest with the bullet exiting his butt. He said he dropped lifeless with a short moan and that was it! It destroyed about every organ he had he said. Here are some pics of the two rifles and the group I shot today.

 

[crashlanding]

Very nice and talk about packing a punch, that'll get er done

 

[comfisherman]

Running with my 375 ruger in a 20 inch tube.

What parent case? Looking at the pic, minimal taper and steep shoulder. How's the recoil without the 3 poet brake?

 

[elkaholic]

Running with my 375 ruger in a 20 inch tube.

What parent case? Looking at the pic, minimal taper and steep shoulder. How's the recoil without the 3 poet brake?

Its my MEGA case necked up with some trick throating. that load generates 4400+ ft/lbs and the 248 will reach 4800 with max pressure using TAC.
recoil is better than I expected with a 7 lb rifle. Prone lets you know it but it bucks more than kicks.

 

[wilkup]

Hey Rich, is your Mega case based off the WSM or SAUM?
Wicked little thumpers for sure!

 

[100percent]

**** it, Rich! Another bucket list item!

 

[memtb]

This is a little off the norm for most Sherman designs, but my cousin moved to Alaska and wanted something short and light that packed a wallop. He will be doing a lot of trapping, hunting etc, in bear country, and of course have moose to hunt. I decided to bypass the 338, and 35 bores and go right to the 375 and design it around a mono that you could run out of a Short Action if you chose. I built mine on a Rem 700 SA with a Hawkins DBM and his on a bone stock Tikka.
My 700 has #5 Benchmark 12 twist cut at 17 1/2" with a 3 port Alexander brake. Todd's has a #4 12 twist Benchmark cut at 18 1/2" with the same brake.
I've been testing them for a couple months with 248 HH and 270 SH bullets. The results are pretty impressive for a SA rifle that weighs 7.8 lbs with scope and is only 38 1/2" long. Todd's Tikka weighs 7.2 lbs. I can run the 248 past 2900 with the 248 and 2750+ with the 270. I finished load development for mine today with the 270 SH at 2715 and shot the best group to date at .183" for three shots.
Todd received his rifle a couple weeks sgo snd his son drew first blood with a Yukon on a young Alaskan Black bear. He shot it at 260 yards with a 248 at 2870. The bear was facing him and he shot it almost center chest with the bullet exiting his butt. He said he dropped lifeless with a short moan and that was it! It destroyed about every organ he had he said. Here are some pics of the two rifles and the group I shot today.

For those old enough to remember Laugh In………"very interesting"! memtb

 

[CA48]

Hey Rich, is your Mega case based off the WSM or SAUM?
Wicked little thumpers for sure!

Pretty sure the mega case is its own design. I think the body is .1" longer than the wsm with a 40* shoulder and a longer neck than the wsm.

 

[adk hunter]

Must bark and bite!
Cool cartridge and builds.

 

[elkaholic]

Hey Rich, is your Mega case based off the WSM or SAUM?
Wicked little thumpers for sure!

Its a longer Shermanized WSM

 

[elkaholic]

Pretty sure the mega case is its own design. I think the body is .1" longer than the wsm with a 40* shoulder and a longer neck than the wsm.

.060" longer than a WSM. Longer body, longer neck, 40 degree, low taper.

 

[CrimsonSplash]

The 30 Sherman mag uses 80-82 grains of powder to push a 245 eol .308 bullet to 2900 fps with a 24-26in barrel. That's long action.

How can this 375yukon, 248 grain bullets go over 2850 fps with a 18in barrel and less powder in a short action? Am I reading that wrong?

 

[elkaholic]

The 30 Sherman mag uses 80-82 grains of powder to push a 245 eol .308 bullet to 2900 fps with a 24-26in barrel. That's long action.

How can this 375yukon, 248 grain bullets go over 2850 fps with a 18in barrel and less powder in a short action? Am I reading that wrong?

It will actually run up over 2900 in a 17 1/2" barreled Short Action

 

[MostlyUselessLurker]

That seems like it would be a bit uncomfortable to shoot.