Browning 92 .44 Mag Bullets Keyholing

[winman]

I'm using a 250 grain SWC and 7.5 grains of Unique. I remember reading that the Browning has a slow twist, maybe I need to buy some lighter weight bullets. Anyone out there with experience loading for this rifle?  Thanks.

[Graybeard]

Sounds to me like you just need to push it a bit faster. That load seems very light to me without looking at the loading data. If you want it to shoot put some W296/H110 under those bullets. Use the book max of it and you'll get some decent groups I'll bet.

[Sir Charles deMoutonBlack]

I've used a 200 gr bullet (RCBS 44-200FP) over 5 gr of Titegroup, a real gamer load, and no tipping.

[LaOtto222]

I think that Graybeard is correct. You are using a minimum charge of Unique. Bump it up by 2 grains and try again. You have to get enough pressure to upset the lead in the bore so it will grip the rifling.

[Lloyd Smale]

a cast bullet properly sized for your gun doesnt need to bump up to fit your bore. If that was the case jacketed bullets would need the same. You need to speed up your bullet to speed up the rotational speed to help stabilize the bullet. Also take a good look at your muzzle crown. If its damaged or cut crooked it can cause this also.

[jd45]

I had one of these several years ago & IIRC, the twist was 1-in 38" & it was similar to Marlin's Micro-Groove rifling. Mine shot great with full-house loads using bullets up to 265 JFP's. I'm no expert, but I'd agree that more velocity is needed with that weight bullet. jd45

[winman]

Thanks for the responses. I'm heading to the range today to try some heavier loads with this bullet and also some .44 Spl loads with lighter bullets (180 and 214) that I forgot to try earlier. I'm thinking lighter bullets may stabilize better with light loads and the 250 gr. will be ok with a stout charge of 2400. Thanks again.

[winman]

Quote by jd45:

' I had one of these several years ago & IIRC, the twist was 1-in 38" '

Yes it is, wonder why they would do that when .44 Mag. revolvers are about 1-in 20"?

[jd45]

I have absolutely NO idea why they'd use such a slow twist like that. I now have an LSI Puma '92 in .45 Colt that has a similar 1-in "30something" twist rate as well, but it has conventional 6 lands & grooves rifling. Haven't found its sweet load yet...........might try your "stout load of 2400" with some 270SAA Keith SWC's I got from MontanaBulletWorks for a deer load this year jd45