ACCURATE 360-280 or LYMAN 358009 SUCCESS!

[SCHUETZENBOOMER]

I finally got a chance to shoot some of the cast loads for the .350GP's earlier this week. Not sure I will ever shoot J-words thru these rifles again. The attached pic shows the results of the FIRST load worked up at the low end. The pic shows a (10) shot group! I was shooting the Accurate 360-280B(Lyman 358009 clone), cast @ 14bhn, from a Mauser 98 with a 26",1:14 twist Shilen barrel. Recoil was very mild and I look forward to chronographing more loads. As a side note, I fireformed another (40) .350GP cases with cast 210's and 42gr/IMR4064 from a Ruger 77 with a 22"bbl. In all, I shot (60) rounds, all with the Hornady gas checks seated below the shoulder. Grease grooves were contained within the neck. I checked the barrel for a shucked gas check after every shot....none. What a blast!

[Blammer]

Outstanding!

[sthwestvictoria]

Looks great. Are there any other .350GP rifles out there or is your's the only one - on the 8x57R case I found out from this thread:
http://castboolits.gunloads.com/showthread.php?102140-Show-us-your-wildcats!&p=2440885

How does you Mauser 98 feed those blunt faced cast bullets? I was using a 250grain in 35 Whelen but can't get the Mauser to feed more than one from the magazine. I have been playing with the RCBS 200grain which does allow you to feed from three in the magazine as it is a bit more pointed. Jacketed spire points feed fine.

[SCHUETZENBOOMER]

SWV,

The GP series are my own homebrew. Been working up loads for years with jacketed(sorry for the language), but am having a ball now with cast. I ordered an Accurate 3-cavity, cut with 360-210B, 360-250A the 360-280B. I fireformed the 210's(with a .200" metplat) from the Ruger77 with no issues whatsoever. The 250's(.255" metplat) from the mauser did not feed as well. With a little rail work, I think they will feed just fine. If someone can tell me how to upload an Excel file, I can add a link to my load data for the entire series as chrono'd to date.

[35 shooter]

Just curious SHUETZENBOOMER, is that Simple Lube in the grooves? Good shooting by the way,guess that answers how that boolit can shoot!

[SCHUETZENBOOMER]

It's my own home brew. I call it MuttLube for a good reason! Do a search and you will see why. So far it works great in everything I have tried it on from .22hornet to .460Rowland. I made about 6pounds which should outlast me!

[youngda9]

I'm going to do a similar thing and order a 3 different cavity mold from Accurate for my next purchase...Excellent idea! I'll get the 210 and 280 grainer that you got and will tweak another design (36-230D) to get a 250. I already have a 230D and that shoots great.

[SCHUETZENBOOMER]

I'll post some pix tomorrow showing the results of weekend load testing with the 360-210B(15bhn). Best (5)shot group was 1 1/2" with 47gr of IMR4064 at 2174fps out of the R-77 22"bbl. Not too bad with a 2 3/4 Redfield post and crosshair! This will be my hunting load this year. It's already drawn blood....got a little too close to the scope on the last shot.