TROUBLE WITH MODEL 70

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Last Post 21 January 2024

Standard Member

4895 posted this 18 January 2024

HAVING TROUBLE WITHA PRE 64 MODEL 70 SHOOTING A 180 GR BULLET WITH A CHARGE OF 28.5 GR OF VARGE. THIS IS A MATCH RIFLE WITH A KRIEGER BARREL WITH A 1/10 TWIST, AT 100 YD SHE WILL HOLD THE 10 RING MAYBE A LITTLE LARGER SEEMS I CAN'T GET HER TO SHOOT A GOLF BALL ROUND GROUP. I SHOT CAST BULLET YEARS AGO SO I HAVE SOME KNOWLEGE ON THE SUBJECT. IS THERE ANY HELP OUT THERE?

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Standard Member

MP1886 posted this 18 January 2024

Which 180 grain bullet 4895? I presume you're talking cast right?

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CBA Member

Ed Harris posted this 18 January 2024

If shooting an '06 the charge of 28.5 of Varget is a bit light. Are you using a Dacron fill or orienting the charge?

I shoot 36 grains with Accurate 31-160H or 30 grains with NOE clone of #311299 with 1 grain Dacron fill tucked loosely into case neck. Federal 210M primers.

73 de KE4SKY In Home Mix We Trust From the Home of Ed's Red in "Almost Heaven" West Virginia

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Larry Gibson posted this 19 January 2024

Agree with Ed Harris, that is a bit light of a charge of Varget under a 180 gr cast bullet in the 30-06. I also suggest you add the dacron filler and then use 28.5 gr as a starting load working up in 1/2 gr increments to 36 gr. If you have any of your namesake [4895], start at the same 28.5 gr, use the dacron filler and work up to 33 gr in 1/2 gr increments.

LMG

Concealment is not cover.........

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Ed Harris posted this 19 January 2024

73 de KE4SKY In Home Mix We Trust From the Home of Ed's Red in "Almost Heaven" West Virginia

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Larry Gibson posted this 20 January 2024

"Ed Harris posted this yesterday

If you happen to be shooting a .308 Win. the 28.5 is a start load and something around 30-32 grains should be a sweet spot with 31-160H or similar. I use 30 grains with #311299 in the .303 British and Krag also." Couldn't agree more, an excellent load to "start" with in those cartridges and, many times, when a dacron filler is used it's an excellent place to stop. LMG

Concealment is not cover.........

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Mike H posted this 20 January 2024

I couldn’t agree more.

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CBA Member

delmarskid posted this 21 January 2024

You may want to check the barrel’s throat. Mine was a high power match rifle before I got it. It’s throat is .314” . 100 round matches are hard on barrels.

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Standard Member

MP1886 posted this 21 January 2024

You may want to check the barrel’s throat. Mine was a high power match rifle before I got it. It’s throat is .314” . 100 round matches are hard on barrels.

Especially if you use a high antimony contest alloy such as Linotype. Antimony is very hard and brittle and more abrasive to the throat then powder gases and unburned powder kernels passing over it.