Author Topic: Nielsen .25 slugs in Marauder and Sumatra  (Read 862 times)

steveoh

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Nielsen .25 slugs in Marauder and Sumatra
« on: October 10, 2020, 08:56:32 AM »
https://nielsenspecialtyammo.com/collections/25-cal

Does anyone here have experience shooting these Nielsen .25 slugs in their Marauder and/or Sumatra?

I’m most concerned about how well they cycle through the magazine. The Sumatra has struggled with slugs and is prone to jamming, but am unsure about the Marauder.

I’m thinking lighter slugs for the Marauder as I’ve got it tuned down a bit.

Thanks


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Alan

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Re: Nielsen .25 slugs in Marauder and Sumatra
« Reply #1 on: October 10, 2020, 10:57:38 AM »
I'd be more worried about the twist rate. If memory serves, the Marauder .25 is a 1:27, which is too slow to spin stabilize a slug.
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oneshot61

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Re: Nielsen .25 slugs in Marauder and Sumatra
« Reply #2 on: November 12, 2020, 04:25:06 PM »
I have some 37 grain from him to try in my armada. I shoot 33 grain varmint knockers 2s nose  @ 940 and they are very accurate, all the way up over 1000 fps.  I have a stock green mountain barrel in mine, but nothing else is stock. I’ll shoot the Nielsen’s this weekend and report back.
 My ace precision.25 reportedly has the same barrel as the Sumatra’s and shoots the 48 grain bbt hp in . 251 moa out to 100 yards . A bit better than the 51 grain bbt
« Last Edit: November 12, 2020, 04:28:02 PM by oneshot61 »

kkarmical

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Re: Nielsen .25 slugs in Marauder and Sumatra
« Reply #3 on: November 23, 2020, 05:51:01 PM »
I'd be more worried about the twist rate. If memory serves, the Marauder .25 is a 1:27, which is too slow to spin stabilize a slug.

I do not think the Green Mountain barrel is 1:27 twist, could be the new Crosman barrel twist rate?

In this thread Bob says he thinks it 1:15.5 twist.
https://airgunguild.com/pcp-c02-and-helium-powered-airguns/marauder-twist-rate/

I tried using NSA 26.8gr & 29gr and didn't like the results but I only tested them out to 50 and felt no need to continue. 
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