Bedding and Accuracy.

[muffett.2008]

Many years ago, I wrote an article on effects of timber and contact points and the effects on Accuracy.
That article predated these new fangle Computer things.....and is long since lost, those Target Magazines have long since ceased to exist.......pity.

Today on the range, I broke out a 1918 Enfield for a bit of a repeat of the original test, less a couple of tests that were proven to be irrelevant, so here is a shortened version of that original test.......it helps to put some of those weird "my rifle shoots large groups" questions into perspective.

Assuming the rifle is in good/reasonable condition, we check zero as per the original zeroing test at 33yds(100ft.)
Using Reloads instead of Milspec ammunition, I ensure my point of impact coincides with my point of aim, adjusting sights until it does. If this requires changing sight blades, then so be it.

Next test is to apply pressure to the right side of the barrel to simulate wood contact......

Then to apply the pressure to the left side..........
(note the direction with nosecap in place)

The effects of down pressure from the top handguard.........

The effects with no Nosecap ...........

..........and finally without the Forewood...........
(note the high left effect)

The two tests omitted were packing each side of the draws, this had bugger all effect in the past and I doubt that it has any bearing on right or left deflection due to the closeness of these components, a loose forewood jazzing around would be more problematic.

The left of centre without the nosecap in place gives us an indication that the rear bedding is not centred, but in this case it is caused by the left locking lug not making contact.......so this brings that bugbear into play.......even contact is imperative for SAFETY, ACCURACY and reduces excess wear on the firearm.

Looking at the variations per test and doing the necessary calculations, those variations from centre are multiplied threefold out to 100yds.
So if you are only getting a 12" group at 100 instead of 2" then consider the effects of these pressure points as an indication of what could be wrong with your rifle.

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