Ruger No 1 single shot rifle accuracy

Accuracy problem with a Ruger No 1 single-shot rifle

Q: I have a Ruger No 1 in .270 Winchester that doesn’t group very well. I live in the bush, a long way from any gunsmiths, and would like to know what I should check and if there is anything I can do to fix the problem myself without having to send it away to a gunsmith?

Sean McDonald

A: An accuracy problem with the Ruger No 1 usually exists in the forearm. Over the years I’ve read many articles suggesting cures such as free-floating, installing a pressure screw at the tip of the forearm hanger, full-bedding and so on.

However, there are a few things you can look for: make sure the forearm isn’t bearing hard against the front of the action. If it is, remove the pressure with a few strokes with a fine file, but it helps to epoxy-bed the tip of the forearm.

Less often, inaccuracy can be caused by pressure from the rear of the quarter rib bearing against the top of the action. 

If you can’t see a slight gap between the rear of the rib and the front of the action, the rib may be slightly too long. If it is, as the barrel heats up the rear end of the rib exerts pressure against the action. 

This can be fixed by removing the rear rib and filing the rear end just enough to ensure there’s no contact between the rib and the action when the rib is screwed back on.




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Nick Harvey

The late Nick Harvey (1931-2024) was one of the world's most experienced and knowledgeable gun writers, a true legend of the business. He wrote about firearms and hunting for about 70 years, published many books and uncounted articles, and travelled the world to hunt and shoot. His reloading manuals are highly sought after, and his knowledge of the subject was unmatched. He was Sporting Shooter's Technical Editor for almost 50 years. His work lives on here as part of his legacy to us all.