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For a step up, try the PPSH-41 slings, they're a good length for the Mosins, SVT-40s, and the SKS's... (and my Grizzly 12.5" tube fed) Also, technically historically accurate, because that style of sling was used on all of those weapons at various times, depending on production pressures/availability... They would differentiate between which rifle it was "designed" for by having a different ink stamp on it to say what it was issued for. Also, Corwin-Arms are better/easier to deal with than Lever, who can be a bit ####-ish (in my experience).