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Author Topic: New Arsenal Molds for .224 and 6mm  (Read 268 times)

rsterne

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New Arsenal Molds for .224 and 6mm
« on: September 01, 2017, 03:12:57 PM »
I just received my Arsenal Molds, after they went to Erik at Hollowpoint Mold Services to have 2 cavities converted to a HP.... They are beautiful, both the molds and the conversions....



The bullets are a scaled down Lyman 257420, which is the standby bullet for .257 PCPs.... I expect them to shoot every bit as well as the original....

Bob


  • Coalmont, BC

Christopher

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Re: New Arsenal Molds for .224 and 6mm
« Reply #1 on: September 02, 2017, 04:25:58 AM »
Those look really nice. How much does the HP reduce the weight? 3-4 grains I'm guessing?

Chris
  • dead end road KY

rsterne

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Re: New Arsenal Molds for .224 and 6mm
« Reply #2 on: September 02, 2017, 08:19:33 AM »
I would guess that is about right.... ~ 3 gr. on the .224 and ~ 4 gr. on the 6mm?.... The Meplat is quite small, so the HP pins are only 1/8" OD, and smaller than that where they form the front of the HP.... about 0.092" for the .224 and 0.106" for the 6mm.... but they are quite deep.... You can specify what you want from Erik, I just told him to make them as large as practical, for maximum destruction for Varmint hunting.... The deeper the HP, the more the bullet expands on impact, and with ones this deep, the bullet often fragments.... Here is a photo of similar HPs in .257 cal impacting soap at 130 FPE.... The 70 gr. 257420 are the lower ones, FN from left, HP from right.... The other bullet is the RCBS 88 gr. "Cowboy"....



and here are the recovered bullets (FN in center, HP right).... The 257420 are the upper ones.... The FN bullets penetrated another block before entering the one in the photo above....



Bob
« Last Edit: September 02, 2017, 08:23:25 AM by rsterne »
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Monkeydad1969

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Re: New Arsenal Molds for .224 and 6mm
« Reply #3 on: September 02, 2017, 10:33:32 AM »
Hey bob,

Other than your 6mm does anyone even make a commercially built 6mm?

Joe
  • Aurora, Colorado
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rsterne

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Re: New Arsenal Molds for .224 and 6mm
« Reply #4 on: September 02, 2017, 10:44:56 AM »
Not that I am aware of.... TJ's make a 10" twist 6mm barrel, which is what I will be using (28").... good for up to about 75 gr. bullets.... This bullet would stabilize in a 14" twist.... I plan to regulate my new gun at 2900 psi, which should put me into the mid to high 900s....

The .224 cal is for my Hayabusa, which has a 29" long TJ's 14" twist barrel, and I can get 14 shots (3000 psi fill) at 1025 fps (100 FPE) with a 41.7 gr. bullet, so this should drop me back into the high 900s with that as well.... 

Bob
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