Rem 870 and Federal TSS #7's

[Terry]

Remington 870 20ga
Carlson Longbeard .568 choke
20" barrel
Federal TSS 3" #7's

40 yards
10" circle


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[Terry]

20 yards

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[Terry]

Not bad numbers, but sporadic pattern. Any ideas why?

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[eorlando]

I get those numbers with HW7's. Why did you choose the 7s over the 9's?

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[Terry]

9's aren't legal here

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[Coop1082]

The sporadic pattern is probably due to over choking. A .568 is pretty tight out of a 870 even for #9s. I'd open that choke up to the .575-.585 ,leaning closer to the .580 and above range, and I'd be willing to bet you'd see a major improvement for those 7s.

[Terry]

I tried a Carlson's .575 at 40 yards this morning. Both looked like this

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[Coop1082]

Wow. You've got me stumped. I've never shot the Feds so I don't know how the flight control wad acts. Clearly it likes a tighter choke but I still don't know why the patterns are as sporadic as they are. That's usually a quick sign of over choking but with the results you got from a .575, I'm totally stumped.

[Terry]

I'm thinking try something tighter next??

I appreciate the help

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[Terry]

I'm not afraid to hunt with the .568 out to 40, it will kill well. I just don't like the sporadic pattern and feel I could do better

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[Coop1082]

I have seen some people say the Federal TSS likes a tighter choke. It just seems odd to have to choke #7s down anymore then you have with the .568 but going tighter very well could be the answer. I'm with you on the hunting that's pattern. If it looked like the first picture you posted every time you pulled the trigger, I'd hunt it every day of the week. I hate opening the choke didn't work. It's just been my experience with hand loads that the more I opened up, the more even my pattern got and i actually gained a few in the 10". Let me know how the tighter choke works for you buddy!

[Terry]

How tight should I go? Carlson's makes a ..565 and a .555

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[Coop1082]

I'd give the .565 a go. The only .555 I've seen perform really well with TSS in general is the IC. Somehow the IC doesn't blow patterns in a .555 constriction where other chokes that tight do.

[Terry]

I'm gonna try and find somebody that might have some experience with a similar set up. I can't afford too many chokes, Lol

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[Coop1082]

I completely understand! Lol. Someone out there has to have experience with an 870 and the Fed 7s!