# Wildcat Load?

Treadlightly
Member Posts:

**32**✭✭
Can somebody please help with a starting load for a wildcat I'm having put together. I'm using a 376Styer case necked up to .423".

I'll be using Hornady 444FTX 265gr bullets resized to fit and maybe later some 350gr Woodleighs

I'll be using Hornady 444FTX 265gr bullets resized to fit and maybe later some 350gr Woodleighs

## Comments

3,85311,039✭✭✭✭Four general rules influence the end result of cartridge performance:

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#9658;If case capacity and bore size are constant, the potential velocity varies inversely at one half the percentage change of bullet weight.

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#9658;If case capacity and bullet weight are constant, the potential velocity varies at one fourth the percentage change of the bore area.

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#9658;If bore size and bullet weight are constant, the potential velocity varies at one fourth the percentage change of the case capacity.

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#9658;If all other factors remain the same, peak pressure varies at two OR three times the percentage change of velocity. (Double if on a psi scale, and triple if on a CUP.)

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All four rules assume that barrel length, bullet type, primer type and powder type remain the same. Bullet weight may be most important. Keep maker, tip and base shape, as well as weight the same if possible.

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32✭✭OAL of the cartridge with Hornady cases and Hornady 265gr FTX is 2.875". Full capacity of case with water is 85.5gr. Barrel is Lothar Walther 10.75mm bore, 1"14 twist, 23" long. Rifle is the old warhorse Mauser 98. This is a modern action so I expect it be safe to operate to about 58,000psi.

I'm in Australia so am limited to Vit, Win, Re and ADI powders [^]

3,8533,85310,648******The head diameter = 0.501"

The rim diameter = 0.494"

I have the case volume of just a tad over 80.0 gr. but that's for the .375 bullets.

3,853Treadlightly start out with 58 to 60 grains of RL 12. Work you way up from there, at your own risk. Carefully! I would also have the Mauser double checked to be sure it is in good operating condition. Let us know how it turns out.

32✭✭3,8533,85332✭✭3,85332✭✭Just out of interest, how did you come about a figure of 56Gr of 2219?[?]

3,85332✭✭Also going by the handle you use, I'm guessing you have a bit of experience with 20cal's. Ever tried the 20VT. That's my other baby I'm playing with

3,853Yes I shoot the 20 VT. Great cartridge. Personally I think it is what Remington should have come out with rather than the 17 Fireball.

32✭✭What's your best load for the 20VT?.

3,853Favorite load for my 20VT is 18 grains of H4198 behind a 32 gr Hornady V-Max. MV is 3623 fps. 1/4 inch 3 shot groups at 100 yards is the norm.

32✭✭3,85332✭✭3,853