Mosin bore sizes

[ptf18]

What lead bullets are you using? I am interested in trying lead as I cant find jacketed bullets for the Mosin Nagants I have.

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[Patrick Chadwick]

I cant find jacketed bullets for the Mosin Nagants I have.

I reckon you can - if you look in the right places!

If you can find them try the Hornady 3130 round nose. These have a diameter of 0.312", They need to be seated well in with the case mouth up to the crimp ring. Crimp - no crimp? I just set the die so that the case mouth shows the barest rubbing mark, to ensure that there is not the slightest flare remaining to make chambering difficult. Sierra make a similar bullet with a 0.311" diameter.

In both my 91/30 and a Finnish sniper, the Hornadys turned so-so performance into excellent performance. These round-nose types have a long cylindrical portion, so that the nose engages the lands before the bullet is totally free of the neck. This improves bullet guidance (and reduces gas-cutting).

Boat tails in old service rifles with their often deep throats (compared with modern standards) will come free of the neck long before the nose engages. Since the necessary play between case and chamber means that the case neck is sitting on the bottom of the available space in the chamber. Gas will flow more easily over the top of the bullet, causing the bullet to be engraved slightly on the skew and thus emerge from the muzzle with a slight skew. This cannot be good for accuracy. Again and again I find that good old-fashioned round-nose bullets give the best grouping.

[bob4wd]

What lead bullets are you using? I am interested in trying lead as I cant find jacketed bullets for the Mosin Nagants I have.

I apologize for not answering you before this, bad form on my part, no excuse, just slipped my mind. Anyways, I've been using Moyers bullets for all of my oddball ammo, seems to work just fine and prices are reasonable.