28ga prb?

[troy_mclure]

I'm getting my barrel bored out to 28ga. What is the best round ball size to use with a patch?

[HARRYMPOPE]

Probably a .530-.535 .It depends on what they cut it to( it should be about .550).My TC 56 SB shot a .535 with .020 (ish) denim patch pretty well.Mine shot better with more then less powder.My 12ga TC New Englander seems to like 100g of Goex FF but my shoulder doesn't.i sold the 56 because i thought i "needed" a bigger smoothbore.( i should have kept the 56 as recoil wasn't so brutal)Who is doing your rebore?

PS-If you need a wadcutter for 28ga i have one ( marked 9/16" ) $5 and whatever it takes to ship it.

George

[smoked turkey]

I have a .56 RB that shoots good but is exceptionally tight in the bore and I use thin patch material of muslin. I greatly prefer a .550 ball with regular pillow ticking as it loads much easier in my .56 SB and is almost as accurate.

[Lonegun1894]

I have a GM smoothbore .54 that actually mikes at .542, and shoot .527 balls, but the only cloth I could seat that ball with is actually t-shirt material, which is way too thin to prevent burning patches, so I seat an extra patch underneath the PRB to help protect the patch wrapped around the ball from burning. I am still not done with load development, but this is my best combo so far. I tried my .535" ball but was unable to use any patch with it. With that one, my best results were with 4 OS cards, a patch seated on top, then the ball dropped loose on top of that (not patched, just sitting on top of the patch), and then 1 OS card to hold everything in place. Not as good as the PRB, but accurate enough to stay on a pie plate out to 35yds. The PRB, so far is inconsistent with the combo's I have tried, giving me 3" groups at 50yds one day, and opening up to 14-15" at 50yds the next. I know this barrel can shoot because if gives some good groups some days, making me think it is the loose nut behind the buttplate[smilie=s: that is the problem.

[troy_mclure]

Probably a .530-.535 .It depends on what they cut it to( it should be about .550).My TC 56 SB shot a .535 with .020 (ish) denim patch pretty well.Mine shot better with more then less powder.My 12ga TC New Englander seems to like 100g of Goex FF but my shoulder doesn't.i sold the 56 because i thought i "needed" a bigger smoothbore.( i should have kept the 56 as recoil wasn't so brutal)Who is doing your rebore?

PS-If you need a wadcutter for 28ga i have one ( marked 9/16" ) $5 and whatever it takes to ship it.

George

John Taylor on here is doing the rebore.

[troy_mclure]

Who makes .530-.550 moulds?

[HARRYMPOPE]

Who makes .530-.550 moulds?

TC made a .550(marked .56 Cal) and so did Lyman/Ideal.Mihec also made a short run of them.

550 is an oddball diameter .530 and .535 are made by Lyman and Lee and others.



George

[HARRYMPOPE]

troy if you are not interested i the punch another guys wants it.

[troy_mclure]

I'll pass on the punch, thanks for the offer.

[waksupi]

I have a 28 gauge. I'm using a .510 ball, with pillow ticking patches.

[GMW]

28 guage is .54 caliber. I have a smooth rifle and I use a .520 hornady rb patched or a .535 with wasp nesting and no patch. Both shoot very accurately out to 60 yds. I mean hitting a paper plate off hand.

[HARRYMPOPE]

I have a 28 gauge. I'm using a .510 ball, with pillow ticking patches.


what dia. is your bore?

George

[waksupi]

what dia. is your bore?

George

I couldn't really tell you right off hand. It is a Long Hammock barrel, you may be able to find some info with a bit of Googling.

[Maven]

troy, As has been suggested by the previous writers, smoothbores have different preferences than rifles in that there are no grooves for the patch to fill and the "correct" ball diameter and patch thickness are determined largely by trial and error. In addition, some smoothies need an overpowder wad as well as a patched RB while others are quite accurate with just overpowder and overshot wads and no patched ball. In short, try not to manipulate ball diameter, patch thickness, and powder charge at the same time. I.e., start with a given powder charge, say 60gr. - 70gr. FFg (by volume) and systematically vary the other two. Lastly, whereas rifles often require a given RB diameter and patch thickness for best accuracy, smoothbores can and do digest a wider variety of RB diameters and patch thicknesses and sometimes no patches at all. The trick is finding the combination which works best for your gun. (Don't ask how I know this!)

[sffar]

If I remember correctly a 28ga is .54 caliber, so a .530 ball should be the one. The patches come in different thicknesses (as I'm sure you know) if the bore's a little big or small.
I have a T/C Renegade .56, and the ball is .550 and a snug fit with even with .005 patches.
Sam

[troy_mclure]

Sounds like a lot of work but alto of fun too. Lol

[waksupi]

Listen to Maven about no where for the patch to go. Without those grooves, you can not get the same size ball in the same nominal bore.

[HARRYMPOPE]

i shot my 12 ga SB (imp choke) this evening.The surprise was a .690 ball between two wads "rattling down the bore" shot a bit better than the same ball with a very tight denim patch.A .015 ticking patch was blown apart and shot 5" groups.Even a .015 patched ball with a wad had its sides cut a bit and didn't do well .Best groups are a bit under 2" for 5 and 3 shot groups go 1.5" sometimes (25 yards shotgun bead sight only) I have 100 or so shots through the New Englander but so far its been interesting. For me 90-100g of FF do much better than the 60-80g range.

[troy_mclure]

Well it's likely to be a few months before I get the barrel back(a few weeks before I even send it out) so I'll have plenty of time to acquire various components.